Bolts, Nuts & Fasteners - Hexagon Head Screw (Size ranges from M 5 to 64)

1. Summary about Hexagon Head Screws (Size Range M5 to M64)

Hexagon head screws are threaded fasteners used for assembling machine parts and structural components. They are tightened using a wrench and are commonly used in engineering and construction applications.

2. Why BIS Certificate is Mandatory for Hexagon Head Screws

BIS certification is mandatory to ensure thread accuracy, dimensional consistency, and mechanical strength. Substandard screws can strip, loosen, or fail in service.

3. What is BIS Certified for Hexagon Head Screws

BIS certification confirms compliance with Indian Standards covering thread geometry, dimensions, tensile properties, and surface condition.

Tests required for Hexagon Head Screws (M5 to M64)

Title	Mandatory/Optional
Dimensions	Required
Material	Optional
Threads requirement	Required
Tensile Test	Required
Proof Load Test	Required
Head Soundness Test	Required
Torsion Test	Required
Impact Test	Required
Hardness Test	Required
Decarburization test	Required
Carburization test	Required
Surface Discontinuity Inspection	Required
Electroplating	Required
Non - Electrolytically applied zinc flake coating	Required

4. Benefits of BIS Certification for Hexagon Head Screws

Ensures consistent fastening quality
Mandatory for industrial and construction use
Reduces assembly and maintenance issues
Improves compatibility with nuts and tools
Enhances market acceptance

Disclaimer.

The contents of this update are provided for general informational purposes only and do not constitute legal advice. Readers are encouraged to consult with professional legal counsel before taking action based on this information.