IS 1364:2018 Part 2 is the Indian Standard (BIS) for hexagon head screws (sizes m1.6 to m64) of product grade a and b. This standard specifies the dimensions, tolerances, and characteristics of hexagon head screws with metric threads from M1.6 up to M64. It is identical to ISO 4017:2014 and differentiates between Product Grade A (high precision, smaller sizes) and Product Grade B (standard precision, larger sizes).
Specifies characteristics for hexagon head screws with threads from M1.6 up to M64 and product grade A and B.
Overview
- Status
- Current
- Usage level
- Frequently Used
- Domain
- General — Fasteners, Bolts and Anchors
- Type
- Specification
Also on InfraLens for IS 1364
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! Screws (Part 2) are typically threaded up to the head, whereas bolts (Part 1) have an unthreaded shank portion. Ensure you are specifying the correct fastener type.
! This code specifies dimensions and tolerances. For mechanical properties, yield strength, and testing, you must cross-reference the IS 1367 series (e.g., specifying Property Class 8.8 or 10.9).
! When designating the screw in drawings or BOQ, follow the standard format: 'Hexagon head screw IS 1364-2 - M12 x 40 - 8.8'.
Frequently referenced clauses
steelstainless steelnon-ferrous metalsfasteners
International Equivalents
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International Comparison — Coming Soon
We're adding equivalent international standards for this code.
Key Values4
Quick Reference Values
thread size rangeM1.6 to M64
thread tolerance class6g
product grade A size limitd <= 24 mm and l <= 150 mm
product grade B size limitd > 24 mm or l > 150 mm
Tables & Referenced Sections
Key Tables
Table 1 - Dimensions of hexagon head screws
Table 2 - Specifications and reference standards
Key Clauses
Clause 3 - Dimensions
Clause 4 - Requirements and Reference International Standards
Clause 5 - Designation
Frequently Asked Questions3
What is the difference between IS 1364 Part 1 and Part 2?+
Part 1 covers hexagon head bolts (partially threaded), while Part 2 covers hexagon head screws (fully threaded up to the head).
Which product grade should be used for an M30 hexagon screw?+
Product grade B is used, as Grade A is only applicable for nominal diameters (d) up to 24 mm and lengths (l) up to 150 mm.
What thread tolerance is specified for these screws?+
Tolerance class 6g is standard for the metric external threads on these hexagon head screws.
QA/QC Inspection Templates
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QA/QC templates coming soon for this code.