Ring Slugging Wrenches (Spanners) are heavy-duty hand tools widely used in industrial, construction, and maintenance applications. These tools are designed to loosen or tighten large fasteners safely. The slug spanners are manufactured from high quality materials.
The Bureau of Indian Standards outlines the minimum requirements of the wrenches under IS 4509: 2024. This ensures that the ring wrenches meet the quality standards. Companies must meet these requirements to use the ISI mark on the product. The BIS certification helps to enhance the brand loyalty among the Indian customers.
What is IS 4509: 2024?
This is the Indian Standard for Ring Slugging Wrenches, which outlines the standard requirements for hardness, workmanship, dimensions and material. This standard is set by the BIS (Bureau of Indian Standards) to ensure that product quality and safety are met, and the wrenches are
- Verified for hardness and mechanical strength.
- Tested for tolerance and dimensional accuracy.
- Designed to withstand heavy hammering.
- Manufactured with proper forging and finishing processes.
Who can apply for slugging wrenches BIS approval?
BIS authorization under IS 4509: 2024 is required for businesses involved in manufacturing, importing, or supplying Ring Wrenches in India.
Applicable to:
- Manufacturers (India) - Must get BIS approval if the slugging wrenches are covered under QCO.
- Foreign Manufacturers - Need certification to export slug wrench to India.
- Importers/Brand Owners - Must ensure that the products are BIS certified before selling.
- Sellers/Distributors - Should only sell certified manual wrenches.
Testing and Inspection Requirements
To ensure the quality, safety needs, and adequate performance of the striking wrench,
the standard set by the Bureau of Indian Standards (BIS) defines proper testing and
inspection requirements during manufacturing.
The BIS testing parameters and quality checks for ring slugging wrenches are listed
below:
Ring Wrenches BIS Approval Process

The BIS Authorisation process ensures that the ring spanners meet the required
standards for proper and efficient operation. This process is set by the Bureau of Indian
Standards (BIS) and includes the following steps:
- Online Registration: Manufacturers register on the BIS Manak portal by submitting company, factory, and product details. Foreign manufacturers must appoint an Authorized Indian Representative (AIR).
- Testing at BIS-Approved Laboratory: Product samples are evaluated in BIS-recognized laboratories to check compliance with prescribed installation and performance requirements, including joint integrity and physical properties.
- Application Submission: The application is submitted along with test reports, technical documents, and factory details. In the case of foreign manufacturers, they must also submit AIR-related documents.
- Factory Inspection : BIS authorities conduct on-site inspections of the manufacturing units to verify the production process, safety measures, and quality control system.
- Grant of BIS License: Once all requirements are satisfactorily met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: Once the license is granted, the manufacturer can use the ISI mark on the product with a CM/L number, confirming that the product meets BIS standards.
IS 4509: 2024 Approval Documents list
Foreign manufacturers must additionally appoint an Authorized Indian Representative (AIR) to coordinate with the Bureau of Indian Standards (BIS) and manage compliance requirements in India.
Marking Requirements & License Validity
Marking Requirements
When a manufacturer obtains BIS Approval, the ISI Mark for Plastic Water Supply Pipes must be clearly and permanently marked on its packaging or on the product. In addition to the ISI Mark, essential details such as the licence number (CM/L), manufacturer’s identification, etc. This ensures the product meets all quality and safety standards. More details are mentioned below:
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 4509 : 2024 |
| CML Number | Certification Marks License (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Batch / Date | Batch number, heat number, or manufacturing date for traceability |
Note:Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
What is the BIS License validity for slugging spanners?
| particulars | Details |
|---|
| Initial Validity | Typically 1 to 2 years, depending on BIS approval conditions |
| Renewal | Must be renewed before expiry by submitting the application along with the prescribed fee and updated documents |
| Surveillane | Includes periodic factory inspections and market sample testing conducted by BIS |
| Compliance | Continuous following to standard and applicable Quality Control Orders (QCOs) is mandatory |
| Risk | Non-compliance or failed sample testing may lead to suspension or cancellation of the BIS license |
BIS license fees for ring slugging spanners?
The cost of BIS Approval for Polyethylene Pipe includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
| Charge Type | Indian Manufacturers | Foreign Manufacturers |
|---|
| Application Fee | INR 1,000 | USD 15 |
| Audit Charges | INR 7,000 | USD 3,200 – 5,900 |
| License Fee | INR 1,000 | USD 15 |
| Marking Fee | As applicable | As applicable |
| Testing Charges | As applicable | As applicable |
| EVTL India Consultancy Fee | As per actual | As per actual |
Note:
- Application fee for foreign manufacturers is payable via SWIFT (SAARC countries may pay in INR with applicable GST).
- Audit charges for foreign manufacturers vary based on country/location.
- Marking fee depends on the product category and production volume (MSME benefits may apply).
- Testing charges are paid directly to BIS-approved laboratories.
- Consultancy fees depend on product type and factory location.
Conclusion
According to IS 4509: 2024, the Bureau of Indian Standards has defined the minimum
standards for Ring Slugging Wrenches. This certification guarantees the quality of
materials, hardness, and dimensions as per the standard. It also ensures dependable
performance in high-impact applications where the tools are subjected to repeated
hammering without failure.
Wrench manufacturers must obtain the BIS certification to avoid any legal action.
Holding a BIS licence also improves product acceptance among Indian customers.
EVTL India offers end-to-end support in documentation, filling the application, and
complete assistance throughout the certification journey.