BIS ISI Certification for Ring Slugging Wrenches - IS 4509:1992

Published on: 05 Nov 2026

BIS ISI Certification for Ring Slugging Wrenches - IS 4509:1992. Ring slugging wrenches are widely used in oil refineries, power plants, construction sites, chemical factories and heavy machinery maintenance. These tools help workers tighten or loosen large nuts and bolts that cannot be handled easily with ordinary spanners. Imagine a worker repairing a large industrial pipeline. The bolts are extremely tight, so the worker uses a ring slugging wrench and strikes its end with a hammer to loosen them. If the wrench is made from poor-quality steel or has manufacturing defects, it could crack or break during use.
To reduce such risks and improve product quality, the Bureau of Indian Standards (BIS) has prescribed technical requirements for ring slugging wrenches. Important 2026 Update: The earlier standard IS 4509:1992 has been revised to IS 4509:2024, and Amendment No. 1 was established in January 2026. Manufacturers should follow the revised standard and its applicable amendments when applying for BIS ISI Certification.
What is BIS ISI Certification for Ring Slugging Wrenches?
BIS ISI Certification is a product certification process that helps establish whether ring slugging wrenches meet the applicable Indian Standard. A ring slugging wrench has a closed ring-shaped head for gripping a nut or bolt and a thick striking end designed to withstand hammer blows. These tools are commonly used for heavy industrial maintenance.
Under IS 4509:2024, manufacturers must meet specified requirements relating to material quality, dimensions, hardness, workmanship, protective coating and marking. After successfully completing the BIS certification process, a manufacturer can obtain a licence under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018. The manufacturer can then use the ISI Mark on products covered by the licence.
What is IS 4509:2024?
IS 4509:2024 is the Indian Standard titled Ring Slugging Wrenches (Spanners) — Specification (Second Revision). The standard covers ring slugging wrenches ranging from 19 mm to 230 mm and prescribes requirements concerning dimensions, suitable steel grades, surface finishing, protective coatings, hardness and marking.
For example, a 24 mm ring slugging wrench must meet the prescribed dimensions and other relevant technical requirements for that size. Simply using strong steel is not enough; the finished wrench must comply with the applicable specifications. The purpose is to ensure that the wrench is properly manufactured and suitable for its intended industrial application.
Latest BIS Updates and Amendments for Ring Slugging Wrenches in 2026
BIS has introduced important changes to IS 4509 over the past two years.

Date

Update

1992

Earlier edition, IS 4509:1992

2024

Revised standard, IS 4509:2024, published

30 October 2024

BIS issued implementation guidelines

12 March 2025

Deadline for implementing the revised standard

20 January 2026

Amendment No. 1 established

19 July 2026

Last date the unamended standard remained in force

Major Changes Under IS 4509:2024

Updated Material Specifications : The revised standard updated material designations in Clause 4 to align with newer Indian Standards. This helps manufacturers identify appropriate steel materials for producing durable ring slugging wrenches.
Addition of New Wrench Sizes : The revised standard added three nominal wrench sizes:

19 mm

22 mm

24 mm

These additions allow manufacturers to include more sizes in their product range, subject to the applicable technical and certification requirements.

Revised BIS Product Manual : BIS updated its product manual to PM/IS 4509/2/October 2024.

The revision included changes to the Scheme of Inspection and Testing. BIS also clarified that existing manufacturers did not require changes to their manufacturing or testing infrastructure merely to switch to the revised standard, nor were they required to submit separate conformity evidence for that switchover.
Amendment No. 1 of January 2026

BIS established Amendment No. 1 to IS 4509:2024 on 20 January 2026, as notified in the Gazette dated 4 February 2026.
The unamended version remained valid until 19 July 2026.
The published draft of the amendment proposed changes to Clause 4 relating to suitable alloyed and unalloyed steel, along with revised chemical-composition requirements in Table 2. Manufacturers should consult the final published amendment to confirm the exact applicable wording and material specifications.
Since the transition period has ended, manufacturers should assess conformity with IS 4509:2024 incorporating Amendment No. 1.
BIS Certification Mandatory Dates for Ring Slugging Wrenches
The Government of India issued the Hand Tools (Quality Control) Order, 2026, through notification S.O. 5561(E), dated 9 October 2026.
The order includes ring slugging wrenches under IS 4509:2024 and prescribes revised mandatory certification dates.

Enterprise category

Mandatory compliance date

General enterprises

1 April 2027

Small enterprises

1 July 2027

Micro enterprises

1 October 2027

The 2026 order replaces the previous Hand Tools Quality Control Order, 2025, subject to provisions dealing with earlier actions or omissions. Manufacturers should distinguish these mandatory certification dates from the earlier standard-revision deadlines.
Who Needs BIS ISI Certification for Ring Slugging Wrenches?
BIS certification requirements apply to manufacturers producing ring slugging wrenches covered under the Quality Control Order. Indian manufacturers must obtain the applicable BIS licence before supplying covered products to the domestic market once the relevant mandatory date takes effect.
Foreign manufacturers exporting these tools to India must also meet the applicable certification requirements. Importers and distributors should ensure that the products they sell comply with BIS regulations. Certain exemptions are available under the Quality Control Order, including domestically manufactured goods intended for export and limited imported research-and-development samples, subject to prescribed conditions.
Technical Requirements Under IS 4509:2024
The standard specifies quality requirements that manufacturers must follow during production.

Requirement

What manufacturers must ensure

Material quality

Suitable steel grades and composition

Dimensions

Correct wrench sizes and prescribed tolerances

Hardness

Compliance with applicable hardness requirements

Workmanship

No cracks, burrs, seams or other harmful defects

Protective coating

Suitable protection against corrosion

Marking

Required identification and product information

BIS also specifies sampling and inspection arrangements through the relevant product manual. For instance, the October 2024 product manual provides for a sample size of three spanners and grouping guidelines for testing different nominal sizes. Manufacturers should check whether subsequent amendments or manuals have updated these arrangements.
BIS ISI Certification Process for Ring Slugging Wrenches
Manufacturers can follow these steps to obtain BIS certification.
Step 1: Identify the Applicable Standard
Confirm that the product falls under IS 4509:2024 and review the latest applicable amendments.
Step 2: Prepare the Manufacturing Facility
Ensure that suitable machinery, testing equipment, trained personnel and quality-control arrangements are available.
Step 3: Submit the BIS Application
Apply through the official BIS Manak Online portal with the necessary factory details and product documents.
Step 4: Product Testing
Ring slugging wrenches are tested against applicable requirements, including dimensions, hardness, materials and workmanship.
Step 5: Factory Inspection
BIS evaluates the manufacturing facilities, production arrangements and testing capabilities according to the applicable certification procedure.
Step 6: Grant of BIS Licence
After satisfactory evaluation, BIS may grant a licence allowing the manufacturer to use the ISI Mark on products covered by the approved scope.
Documents Required for BIS ISI Certification
Manufacturers generally need to prepare the following documents:

Business registration and manufacturing-unit address proof.

Manufacturing process flow chart.

List of manufacturing machinery.

List of testing equipment.

Product specifications and drawings.

Raw material details and conformity records.

Quality-control personnel information.

Product test reports, wherever applicable.

Authorisation documents and required declarations.

Additional documents may be requested depending on the product, manufacturing arrangements and BIS certification procedure.
BIS Certification Fees and Timeline
The cost of BIS ISI Certification for Ring Slugging Wrenches depends on application fees, factory inspection charges, product testing, annual licence fees and applicable marking fees. The total amount varies according to the certification requirements and the manufacturer's product range. Similarly, the certification timeline depends on document completeness, testing arrangements, inspection scheduling and compliance with the applicable standard. Manufacturers should check the latest BIS fee schedule before submitting their applications.
Benefits of BIS ISI Certification for Ring Slugging Wrenches
BIS certification offers several practical benefits to manufacturers and industrial buyers.

Improved product quality
Helps demonstrate conformity with prescribed Indian Standards.

Better workplace safety
Supports consistent manufacturing quality for tools used under heavy impact.

Customer confidence
The ISI Mark can help buyers identify products manufactured under an approved certification scheme.

Regulatory compliance
Helps manufacturers meet mandatory requirements under the applicable Quality Control Order.

Industrial market opportunities
Can support eligibility where buyers or procurement specifications require BIS-certified products.

Manufacturers must continue maintaining product quality even after obtaining certification.
Penalties for Non-Compliance
Once mandatory certification becomes applicable, manufacturing, importing or selling covered products that do not comply with the Quality Control Order can attract enforcement action. Violations may result in penalties under the Bureau of Indian Standards Act, 2016, depending on the nature of the offence and applicable legal provisions. Manufacturers must also avoid using the ISI Mark without a valid BIS licence.
How Compliance Calendar LLP Can Help
Compliance Calendar LLP assists manufacturers with BIS ISI Certification for Ring Slugging Wrenches under IS 4509:2024. Our support includes identifying applicable standards, preparing documentation, assisting with application filing, coordinating testing and helping manufacturers understand factory inspection and ongoing compliance requirements. Manufacturers can also seek guidance on revised BIS standards, amendments and licence-related requirements.
Frequently Asked Questions 
Q1. What is BIS ISI Certification for Ring Slugging Wrenches?
Ans. It is a product certification process that confirms conformity with the applicable Indian Standard for ring slugging wrenches.
Q2. What is the latest BIS Standard for Ring Slugging Wrenches?
Ans. The applicable revised standard is IS 4509:2024, incorporating Amendment No. 1 of January 2026.
Q3. Is BIS Certification mandatory for Ring Slugging Wrenches?
Ans. Yes. Covered products require certification from the applicable dates under the Hand Tools (Quality Control) Order, 2026.
Q4. What is the difference between IS 4509:1992 and IS 4509:2024?
Ans. The revised standard updates material specifications, introduces additional nominal sizes and revises certification-related inspection guidance.
Q5. When does BIS Certification become mandatory?
Ans. The deadlines are 1 April 2027 for general enterprises, 1 July 2027 for small enterprises and 1 October 2027 for micro enterprises.
Q6. What is Amendment No. 1 to IS 4509:2024?
Ans. It is an amendment established on 20 January 2026. Manufacturers should consult its final text for the applicable technical changes.
Q7. What tests are required for Ring Slugging Wrenches?
Ans. Applicable assessments include dimensions, material conformity, hardness, workmanship and other requirements prescribed by IS 4509:2024.
Q8. How much does BIS ISI Certification cost?
Ans. The total cost depends on application fees, testing, factory inspection, marking fees and applicable licence charges.
Q9. Can foreign manufacturers obtain BIS Certification?
Ans. Yes. Foreign manufacturers can apply through the applicable BIS certification process to supply covered products to India.
Q10. How can manufacturers apply for BIS ISI Certification online?
Ans. Manufacturers can apply through the BIS Manak Online portal by submitting the required factory information, product details and supporting documents.

Ring slugging wrenches are widely used in oil refineries, power plants, construction sites, chemical factories and heavy machinery maintenance. These tools help workers tighten or loosen large nuts and bolts that cannot be handled easily with ordinary spanners. Imagine a worker repairing a large industrial pipeline. The bolts are extremely tight, so the worker uses a ring slugging wrench and strikes its end with a hammer to loosen them. If the wrench is made from poor-quality steel or has manufacturing defects, it could crack or break during use.

To reduce such risks and improve product quality, the Bureau of Indian Standards (BIS) has prescribed technical requirements for ring slugging wrenches. Important 2026 Update: The earlier standard IS 4509:1992 has been revised to IS 4509:2024, and Amendment No. 1 was established in January 2026. Manufacturers should follow the revised standard and its applicable amendments when applying for BIS ISI Certification.

What is BIS ISI Certification for Ring Slugging Wrenches?

BIS ISI Certification is a product certification process that helps establish whether ring slugging wrenches meet the applicable Indian Standard. A ring slugging wrench has a closed ring-shaped head for gripping a nut or bolt and a thick striking end designed to withstand hammer blows. These tools are commonly used for heavy industrial maintenance.

Under IS 4509:2024, manufacturers must meet specified requirements relating to material quality, dimensions, hardness, workmanship, protective coating and marking. After successfully completing the BIS certification process, a manufacturer can obtain a licence under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018. The manufacturer can then use the ISI Mark on products covered by the licence.

What is IS 4509:2024?

IS 4509:2024 is the Indian Standard titled Ring Slugging Wrenches (Spanners) — Specification (Second Revision). The standard covers ring slugging wrenches ranging from 19 mm to 230 mm and prescribes requirements concerning dimensions, suitable steel grades, surface finishing, protective coatings, hardness and marking.

For example, a 24 mm ring slugging wrench must meet the prescribed dimensions and other relevant technical requirements for that size. Simply using strong steel is not enough; the finished wrench must comply with the applicable specifications. The purpose is to ensure that the wrench is properly manufactured and suitable for its intended industrial application.

Latest BIS Updates and Amendments for Ring Slugging Wrenches in 2026

BIS has introduced important changes to IS 4509 over the past two years.

Date	Update
1992	Earlier edition, IS 4509:1992
2024	Revised standard, IS 4509:2024, published
30 October 2024	BIS issued implementation guidelines
12 March 2025	Deadline for implementing the revised standard
20 January 2026	Amendment No. 1 established
19 July 2026	Last date the unamended standard remained in force

Major Changes Under IS 4509:2024

Updated Material Specifications : The revised standard updated material designations in Clause 4 to align with newer Indian Standards. This helps manufacturers identify appropriate steel materials for producing durable ring slugging wrenches.
Addition of New Wrench Sizes : The revised standard added three nominal wrench sizes:

19 mm
22 mm
24 mm

These additions allow manufacturers to include more sizes in their product range, subject to the applicable technical and certification requirements.

Revised BIS Product Manual : BIS updated its product manual to PM/IS 4509/2/October 2024.

Amendment No. 1 of January 2026

BIS established Amendment No. 1 to IS 4509:2024 on 20 January 2026, as notified in the Gazette dated 4 February 2026.

The unamended version remained valid until 19 July 2026.

The published draft of the amendment proposed changes to Clause 4 relating to suitable alloyed and unalloyed steel, along with revised chemical-composition requirements in Table 2. Manufacturers should consult the final published amendment to confirm the exact applicable wording and material specifications.

Since the transition period has ended, manufacturers should assess conformity with IS 4509:2024 incorporating Amendment No. 1.

BIS Certification Mandatory Dates for Ring Slugging Wrenches

The Government of India issued the Hand Tools (Quality Control) Order, 2026, through notification S.O. 5561(E), dated 9 October 2026.

The order includes ring slugging wrenches under IS 4509:2024 and prescribes revised mandatory certification dates.

Enterprise category	Mandatory compliance date
General enterprises	1 April 2027
Small enterprises	1 July 2027
Micro enterprises	1 October 2027

Who Needs BIS ISI Certification for Ring Slugging Wrenches?

BIS certification requirements apply to manufacturers producing ring slugging wrenches covered under the Quality Control Order. Indian manufacturers must obtain the applicable BIS licence before supplying covered products to the domestic market once the relevant mandatory date takes effect.

Foreign manufacturers exporting these tools to India must also meet the applicable certification requirements. Importers and distributors should ensure that the products they sell comply with BIS regulations. Certain exemptions are available under the Quality Control Order, including domestically manufactured goods intended for export and limited imported research-and-development samples, subject to prescribed conditions.

Technical Requirements Under IS 4509:2024

The standard specifies quality requirements that manufacturers must follow during production.

Requirement	What manufacturers must ensure
Material quality	Suitable steel grades and composition
Dimensions	Correct wrench sizes and prescribed tolerances
Hardness	Compliance with applicable hardness requirements
Workmanship	No cracks, burrs, seams or other harmful defects
Protective coating	Suitable protection against corrosion
Marking	Required identification and product information

BIS ISI Certification Process for Ring Slugging Wrenches

Manufacturers can follow these steps to obtain BIS certification.

Step 1: Identify the Applicable Standard

Confirm that the product falls under IS 4509:2024 and review the latest applicable amendments.

Step 2: Prepare the Manufacturing Facility

Ensure that suitable machinery, testing equipment, trained personnel and quality-control arrangements are available.

Step 3: Submit the BIS Application

Apply through the official BIS Manak Online portal with the necessary factory details and product documents.

Step 4: Product Testing

Ring slugging wrenches are tested against applicable requirements, including dimensions, hardness, materials and workmanship.

Step 5: Factory Inspection

BIS evaluates the manufacturing facilities, production arrangements and testing capabilities according to the applicable certification procedure.

Step 6: Grant of BIS Licence

After satisfactory evaluation, BIS may grant a licence allowing the manufacturer to use the ISI Mark on products covered by the approved scope.

Documents Required for BIS ISI Certification

Manufacturers generally need to prepare the following documents:

Business registration and manufacturing-unit address proof.
Manufacturing process flow chart.
List of manufacturing machinery.
List of testing equipment.
Product specifications and drawings.
Raw material details and conformity records.
Quality-control personnel information.
Product test reports, wherever applicable.
Authorisation documents and required declarations.

Additional documents may be requested depending on the product, manufacturing arrangements and BIS certification procedure.

BIS Certification Fees and Timeline

The cost of BIS ISI Certification for Ring Slugging Wrenches depends on application fees, factory inspection charges, product testing, annual licence fees and applicable marking fees. The total amount varies according to the certification requirements and the manufacturer's product range. Similarly, the certification timeline depends on document completeness, testing arrangements, inspection scheduling and compliance with the applicable standard. Manufacturers should check the latest BIS fee schedule before submitting their applications.

Benefits of BIS ISI Certification for Ring Slugging Wrenches

BIS certification offers several practical benefits to manufacturers and industrial buyers.

Improved product quality	Helps demonstrate conformity with prescribed Indian Standards.
Better workplace safety	Supports consistent manufacturing quality for tools used under heavy impact.
Customer confidence	The ISI Mark can help buyers identify products manufactured under an approved certification scheme.
Regulatory compliance	Helps manufacturers meet mandatory requirements under the applicable Quality Control Order.
Industrial market opportunities	Can support eligibility where buyers or procurement specifications require BIS-certified products.

Manufacturers must continue maintaining product quality even after obtaining certification.

Penalties for Non-Compliance

Once mandatory certification becomes applicable, manufacturing, importing or selling covered products that do not comply with the Quality Control Order can attract enforcement action. Violations may result in penalties under the Bureau of Indian Standards Act, 2016, depending on the nature of the offence and applicable legal provisions. Manufacturers must also avoid using the ISI Mark without a valid BIS licence.

How Compliance Calendar LLP Can Help

Compliance Calendar LLP assists manufacturers with BIS ISI Certification for Ring Slugging Wrenches under IS 4509:2024. Our support includes identifying applicable standards, preparing documentation, assisting with application filing, coordinating testing and helping manufacturers understand factory inspection and ongoing compliance requirements. Manufacturers can also seek guidance on revised BIS standards, amendments and licence-related requirements.

Frequently Asked Questions

Q1. What is BIS ISI Certification for Ring Slugging Wrenches?

Ans. It is a product certification process that confirms conformity with the applicable Indian Standard for ring slugging wrenches.

Q2. What is the latest BIS Standard for Ring Slugging Wrenches?

Ans. The applicable revised standard is IS 4509:2024, incorporating Amendment No. 1 of January 2026.

Q3. Is BIS Certification mandatory for Ring Slugging Wrenches?

Ans. Yes. Covered products require certification from the applicable dates under the Hand Tools (Quality Control) Order, 2026.

Q4. What is the difference between IS 4509:1992 and IS 4509:2024?

Ans. The revised standard updates material specifications, introduces additional nominal sizes and revises certification-related inspection guidance.

Q5. When does BIS Certification become mandatory?

Ans. The deadlines are 1 April 2027 for general enterprises, 1 July 2027 for small enterprises and 1 October 2027 for micro enterprises.

Q6. What is Amendment No. 1 to IS 4509:2024?

Ans. It is an amendment established on 20 January 2026. Manufacturers should consult its final text for the applicable technical changes.

Q7. What tests are required for Ring Slugging Wrenches?

Ans. Applicable assessments include dimensions, material conformity, hardness, workmanship and other requirements prescribed by IS 4509:2024.

Q8. How much does BIS ISI Certification cost?

Ans. The total cost depends on application fees, testing, factory inspection, marking fees and applicable licence charges.

Q9. Can foreign manufacturers obtain BIS Certification?

Ans. Yes. Foreign manufacturers can apply through the applicable BIS certification process to supply covered products to India.

Q10. How can manufacturers apply for BIS ISI Certification online?

Ans. Manufacturers can apply through the BIS Manak Online portal by submitting the required factory information, product details and supporting documents.

Article last updated on : 05 Nov 2026.