IS 11644 : 1999 — Tolerances of form and position for aerospace bolts and screws (First Revision)

What is IS 11644 : 1999?

IS 11644 : 1999 is an Indian Standard published by the Bureau of Indian Standards (BIS) under the title Tolerances of form and position for aerospace bolts and screws (First Revision). It falls under the <strong>Transport and Related Products</strong> group and is administered by the Ministry of Civil Aviation. Certification under this standard is voluntary.

How to get certified for IS 11644 : 1999

1. 1
   Apply online — Submit the BIS portal application with product details, factory information, and test reports.
2. 2
   Lab testing — Submit product samples to a BIS-recognised testing laboratory for evaluation against the standard.
3. 3
   Factory inspection — A BIS officer visits your manufacturing facility to verify quality control systems.
4. 4
   Licence grant — On approval, BIS issues the licence. You may then affix the ISI Mark on compliant products.

Related Indian Standards

• IS 15437Aerospace - Screws, 100 Degrees Normal Countersunk Head, Internal Offset Cruciform Ribbed or Unribbed Drive, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1 100 Mpa - Dimensions
• IS 15469Aerospace — Bolts, Normal Bihexagonal Heads, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1 100 MPa — Dimensions (Second Revision)
• IS 8000Geometrical product specifications (GPS) -- Geometrical tolerancing: Part 1 Tolerances of form, orientation, location and run-out (Second Revision)
• IS 8000Geometrical product specifications (GPS) -- Geometrical tolerancing: Part 2 Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR) (third revision)