BIS Certification for Self-Drilling & Self-Tapping Screws
8. April 2026Self-drilling and self-tapping screws used in technical and industrial applications are subject to mandatory BIS certification in India. These fastening components play a critical role in structural integrity, assembly performance, and safety across construction, manufacturing, and engineering sectors.
Compliance with Indian Standards (IS) ensures that these screws meet defined requirements for mechanical strength, dimensional accuracy, corrosion resistance, and functional performance. BIS certification, typically under the ISI Certification Scheme, is required for market access in India and involves product testing as well as factory inspection.
BIS Certification under IS 18471 (Part 1–3)
IS 18471 (Parts 1 to 3) specifies requirements for self-drilling screws designed to drill their own holes in metal substrates without pre-drilling.
The standard covers:
- Material composition and hardness
- Drilling performance and tip geometry
- Mechanical strength and torsional resistance
- Dimensional tolerances
Certification under this standard requires:
- Testing in BIS-recognized laboratories
- Verification of drilling capability and load performance
- Factory inspection to assess manufacturing consistency and quality control systems
BIS Certification under IS 18476
IS 18476 applies to hex washer head drilling screws, commonly used in roofing, cladding, and structural fastening applications.
The standard regulates:
- Head configuration and washer integration
- Sealing performance and load distribution
- Corrosion resistance (especially for outdoor applications)
- Mechanical and dimensional properties
BIS certification under the ISI Scheme includes:
- Laboratory testing for mechanical and environmental performance
- Inspection of production facilities
- Ongoing surveillance to ensure continued compliance
BIS Certification under IS 18480 (Part 1–3)
IS 18480 (Parts 1 to 3) defines requirements for self-tapping screws that form or cut threads into pre-drilled holes in various materials.
The standard includes:
- Thread design and forming capability
- Torque characteristics and stripping resistance
- Material strength and durability
- Dimensional specifications
Certification involves:
- Functional testing of tapping performance
- Mechanical strength validation
- Factory audit procedures under the BIS ISI certification scheme
Is BIS Certification Mandatory for Self-Drilling and Self-Tapping Screws?
Yes. If these products fall under mandatory BIS regulation, manufacturers must obtain BIS certification before placing them on the Indian market. Non-compliance can lead to import restrictions, product recalls, or penalties.
What Is the BIS Certification Procedure?
The BIS certification process typically includes:
- Identification of applicable Indian Standards
- Product testing in BIS-approved laboratories
- Submission of technical documentation
- Factory inspection by BIS authorities
- Grant of ISI license upon successful evaluation
Both domestic manufacturers and foreign producers must comply with these requirements.
How Long Does BIS Certification Take?
The certification timeline depends on product complexity, testing duration, and factory readiness. In most cases, the BIS certification process takes several weeks to a few months.
MPR International GmbH – BIS Certification Service for Self-Drilling & Self-Tapping Screws
MPR International GmbH provides specialized support for BIS certification in India, including ISI certification for self-drilling screws, tapping screws, and related fastening products.
Services include:
- Regulatory analysis of applicable Indian Standards such as IS 18471, IS 18476, and IS 18480
- Coordination of product testing with BIS-recognized laboratories
- Technical documentation review and compliance preparation
- Factory inspection coordination and audit support
- End-to-end management of the BIS registration and certification process
With in-depth expertise in Indian Standards compliance and market access requirements, MPR International GmbH supports manufacturers in achieving efficient and reliable BIS certification for industrial fastening components in India.
