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BIS-ISI-CERTIFICATE

IS 1284 : 1975

Bolts, Nuts & Fasteners - Wrought Aluminium Alloy Bolt and Screw Stock for General Engineering purposes

Bolts, Nuts & Fasteners - Wrought Aluminium Alloy Bolt and Screw Stock for General Engineering purposes
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1. Summary about Wrought Aluminium Alloy Bolt and Screw Stock for General Engineering Purposes

This material is used as raw stock for manufacturing bolts and screws in general engineering applications. Aluminium alloys provide lightweight strength and corrosion resistance.


2. Why BIS Certificate is Mandatory for Aluminium Alloy Bolt and Screw Stock

BIS certification is mandatory to ensure consistent alloy composition, mechanical properties, and suitability for machining.


3. What is BIS Certified for Aluminium Alloy Bolt and Screw Stock

BIS certification verifies compliance with Indian Standards covering chemical composition, mechanical properties, and dimensional tolerances.


Tests required for Wrought Aluminium Alloy Bolt and Screw Stock

TitleMandatory/Optional
Freedom from Defects

Required

Chemical Composition

Optional

Dimensions and Tolerances

Required

Tensile Test

Required

Head-Forming Test

Required


4. Benefits of BIS Certification for Aluminium Alloy Bolt and Screw Stock

  • Ensures consistent alloy quality
  • Mandatory for regulated engineering supply
  • Improves machining and performance reliability
  • Reduces material rejection
  • Builds manufacturer confidence

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