The Hexagon Head Screws form a part of the widely used class of screws in engineering, construction, automotive, machinery, infrastructure and industries. Such screws are intended to offer fastening and mechanical performance as per the conditions under which they would be employed. As such fasteners are very important for providing structural stability and security of the assembly; it becomes essential that the products meet the requirements laid down by IS 1364 (Part 2):2023 / ISO 4017:2022.
As per Indian Standards, the hexagon head screws need to comply with technical specifications relating to their dimension, thread, mechanical performance, material quality, tensile strength, surface finish, and other such performance-related requirements. The conformity to QCOs of the Bureau of Indian Standards (BIS) and Indian Standards is mandatory where applicable. The ISI Mark on hexagon head screws indicates conformity to prescribed quality standards.
What is IS 1364 (Part 2):2023?
The Indian Standard IS 1364 (Part 2):2023 is equivalent to the international standard ISO 4017:2022 and lays down the requirements of hexagon head screws of product grades A and B of the sizes M1.6 to M64. Requirements related to dimensions, tolerances, thread form, and properties have been detailed. According to the BIS requirement, hexagon head screws are -
- Tested for dimensional accuracy
- Verified for mechanical strength properties
- Examined for thread conformity
- Checked for material composition and workmanship
Who needs BIS Certification for Hexagon Head Screws?
BIS certification under IS 1364 (Part 2):2023 is required for organizations involved in the manufacturing, import, or supply of hexagon head screws covered under the applicable Quality Control Orders.
Applicable to -
- Manufacturers (India) - Must obtain BIS certification if the product falls under mandatory certification requirements.
- Foreign Manufacturers - Need BIS approval before exporting covered products to India
- Importers/Brand Owners - Must ensure that the screws being imported and sold comply with BIS requirements.
- Dealers and Distributors - Should market and supply only certified products wherever certification is mandatory.
Benefits of ISI Certification for Hexagon Head Screws
Hexagon Head Screw BIS Certification Under IS 1364 (Part 2):2023 is important in adhering to Indian quality standards concerning dimensions, mechanical properties, and reliability. This is a way of confirming that the product is up to the required standards and fit for industrial use.
- Ensures compliance with the requirements of IS 1364 (Part 2):2023
- Reliability and good fastening characteristics
- Increased mechanical strength and durability
- Increased consistency and interchangeability of dimensions
- Greater acceptance in industrial and infrastructure projects
- Greater market credibility with ISI Certification
- Reduces the risk of fastening failures and problems
- Ensures compliance with the BIS QCO requirement
- Improved ability to be procured by the government and institutions
- Standardized manufacture and quality control
- Enhanced consumer satisfaction
BIS Testing Requirements for Hexagon Head Screws as per IS 1364 (Part 2):2023
In order to ensure that there is high quality, durability and mechanical properties of hexagon head screws, the Bureau of Indian Standards provides certain specifications for inspection and tests as per IS 1364 (Part 2):2023 / ISO 4017:2022. The certificate thus issued proves that the manufacturers always manufacture screws which meet all the required dimensional, material, thread, and mechanical property specifications. They also prove that they are capable of withstanding operational loads.
The BIS testing parameters for Hexagon Head Screws (Size Range M1.6 to M64) are as follows:
Procedure for BIS ISI Certification under IS 1364 (Part 2):2023
The BIS Certification for hexagon head screw ensures that the hexagon head screw meets the Indian Standard requirements laid down. The BIS certification is done under Scheme I of BIS and goes through various 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 tested at BIS-recognized laboratories to verify compliance with dimensional, mechanical, and material requirements specified in the standard.
- Application Submission :- The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection :- The officials of BIS carry out an inspection of the manufacturing units for the verification of the manufacturing process, safety measures and quality control system.
- Grant of BIS License :- When all the above requirements are met satisfactorily, BIS awards the certificate license under Scheme-I.
- Use of ISI Mark :- After the license is obtained, the ISI mark may be affixed on the product/packing/document along with the CM/L number as specified by BIS.
Surface Condition and Coating Tests
- Electroplating Test (R) – Checks quality and thickness of electroplated coating
- Zinc Flake Coating Test (R) – Ensures proper non-electrolytic coating
performance
- Hot Dip Galvanizing Test (R) – Verifies corrosion protection through
galvanization
- Finish Inspection (R) – Ensures smooth and defect-free surface
Surface Integrity and Quality Tests
- Surface Integrity Test (R) – Detects cracks, laps, or surface defects using NDT
methods
- Decarburization Test (S) – Ensures proper carbon content on the surface
- Head Soundness Test (S) – Checks structural integrity of the screw head
Process Control and Inspection Requirements
- In-Process Inspection (R) – Continuous monitoring during manufacturing
- Batch Testing (R) – Testing based on control units (same material, process, and
day production)
- Calibration of Equipment (R) – Ensures accuracy of testing instruments
- Test Record Maintenance (R) – Proper documentation for compliance
verification
Coating and Corrosion Resistance Tests
- Salt Spray Test (R) – Evaluates resistance to corrosion in harsh environments
- Surface Coating Thickness Test (R) – Ensures proper coating application
process of bis certification
The BIS certification process for Hexagon Head Bolts, Screws and Nuts of Product Grades A and B – Hexagon Head Screws (Size Range M 1.6 to M 64) involves multiple steps, designed to thoroughly evaluate a product's compliance with the required standards. Here is a general overview of the certification process:
- 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 tested in BIS-approved labs to check safety, insulation,
heating performance, and electrical protection.
- Application Submission: The application is submitted along with test reports, technical documents, and
factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection: BIS officials inspect the manufacturing unit to verify the production process,
safety measures, and quality control system.
- Grant of BIS License: If all requirements are met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: After approval, the manufacturer can use the ISI mark on products with a CM/L
number, confirming that the product meets BIS standards.
Documents Required for IS 1364 (part 2) Certification
The following documents are typically required for obtaining BIS certification:
| Basic Details | - GST Certificate
- Email ID & Contact Number
- Factory & Office Address
- Rent Agreement / Lease Deed (if applicable)
|
| Legal Documents | - Partnership Deed (if partnership firm)
|
| Manufacturing Details | - List of machinery
- Process flow chart
- Layout Plan of Factory
|
| Raw Material Details | - List of Raw Materials
- Supplier Details
- Raw Material Invoices
- Raw Material Test Certificates
|
| Testing & Quality Control | - List of Testing Equipment
- Calibration Certificates
- QC / Lab In-charge Appointment Letter & Qualification
|
| Production Details | - Annual Installed Capacity
- Last Year Production Value
|
| Product & Packaging Details | - Quantity per Package
- Nature of Packing
- Nature of Printing / Marking on Product
|
| Management Details | - Top Management Details
- Concerned Person for BIS Communication
|
| Brand & Certification Documents | - Trademark / Brand Certificate
- Consent Letter from BIS Recognized Laboratory
|
| Additional Documents | - Weekly Off Details
- Hygiene Document (if applicable)
- Relaxation Letter (if applicable)
- Any Other Relevant Document
|
Marking Requirements & License Validity
Marking Requirements
When a manufacturer obtains the BIS license, the ISI mark for hexagon head screws
must be applied clearly and permanently on the product or its packaging. In addition to
the ISI Mark, other important details must also be provided on the product or packaging,
as specified in the table below. This ensures the product meets all quality and safety
standards.
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and follows to the standard |
| Standard Number | IS 1364 (part 2) |
| CML Number | Certification Marks Licence (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.
Validity of BIS license for hexagon-head screws
After obtaining BIS certification for the product, the license is valid for a fixed period and
must be maintained by following BIS rules and standards.
| 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 |
| Surveillance | 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 |
cOST AND TIMELINE OF CERTIFICATION
The cost of BIS certification includes charges for application, inspection, license, testing,
and marking. These fees are paid to BIS as per Scheme I guidelines.
Cost Breakdown
Indian Manufacturers
| No. | Major Charges | Particulars | Amount | Remark |
| 1 | BIS Fees | Application Fee | INR 1,000 | — |
|
| Audit / Inspection Fee | INR 7,000 | — |
|
| License Fee | INR 1,000 | — |
|
| Marking Fee | Depends on product | Discount as per MSME |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual | Depends on product type and factory location. |
Foreign Manufacturers
| No. | Major Charges | Particulars | Amount | Remark |
| 1. | BIS Fees | Application Fee | USD 15 | Payable via SWIFT to BIS. SAARC countries can pay INR with 18% GST. |
|
| Audit Charges | USD 3,200 – 5,900 | Depend on Country |
|
| License Fee | USD 15 | — |
|
| Marking Fee | Depends on product | — |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual
| Based on product and manufacturing location. |
to know the process in detail, please visit:
Under BIS Registration Products ISI and CRS
conclusion
BIS certification for hexagon head screws as per IS 1364 (Part 2):2023 ensures that the
product meets the required standards of quality, strength, and dimensional accuracy for
reliable performance in construction, machinery, and engineering applications. It also
ensures that the screws are properly tested for mechanical properties, threading
accuracy, surface finish, and corrosion resistance, making them suitable for heavy-duty
and precision fastening applications while reducing the risk of failure.
With the support of an experienced BIS consultant like EVTL India, manufacturers can
complete the certification process smoothly, avoid errors, and obtain timely approval for
their products
