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Bureau of Indian Standards · STANDARD

IS 3757

High Strength Structural Bolts — Specification

§ 01

Overview

What this standard covers

High strength friction grip bolts used for slip resistant connections in Indian practice.

High strength friction grip bolts used for slip resistant connections in Indian practice.

Who uses it

Connection designers, fabricators and site teams selecting and tightening structural assemblies.

§ 02

Details

Reference data

Standard number
IS 3757
Title
High Strength Structural Bolts — Specification
Organisation
Bureau of Indian Standards
Country
India
Region
India
Subject
Bolting
Subcategory
HSFG
Type
STANDARD
Application
Contractual
Availability
Paid
Status
CURRENT
Roles
bolting standard
Last verified
2026-09-06

Official source: services.bis.gov.in

§ 03

Related

Standards used alongside this one

  • IS 6623

    High Strength Structural Nuts — Specification

    Nuts matched to high strength structural bolts, completing the HSFG assembly.

    IndiaBoltingCURRENTPaid

  • IS 800

    General Construction in Steel — Code of Practice

    India's principal steel design code, limit state based since the 2007 revision, covering members, connections, stability, fatigue and fire.

    IndiaDesign codesCURRENTPaid

  • ASTM F3125/F3125M

    High Strength Structural Bolts and Assemblies

    The consolidated specification covering grades A325, A490, F1852 and F2280 structural bolts and twist-off assemblies.

    United StatesBoltingCURRENTPaid

  • ASTM F959

    Compressible-Washer-Type Direct Tension Indicators

    Direct tension indicating washers used to verify bolt preload by measuring gap closure.

    United StatesBoltingCURRENTPaid

  • BS EN 14399-1

    High-strength structural bolting assemblies for preloading — General requirements

    The framework for preloaded assemblies: bolt, nut and washer are qualified together as a K-class assembly, not mixed between suppliers.

    United KingdomBoltingCURRENTPaid

  • BS EN 14399-10

    Preloaded bolting assemblies — System HRC bolt and nut assemblies with calibrated preload

    Tension control bolts whose spline shears off at the calibrated preload, giving a visible indication of correct tightening.

    United KingdomBoltingCURRENTPaid

Sourcing, review and use

Status

Editorial reference information compiled and maintained by the StructuralSteel.ai team. It is not a design certificate and is not issued under an engineer's seal.

Last reviewed

Calculations

Any figures produced on this page are indicative estimates for early sizing and comparison only — they are not engineered design outputs.

Final member selection, loading, connection design, fire design, fabrication and compliance must be verified for your specific project by a suitably qualified structural engineer. Standards are revised; check the edition in force where the work is built.

Verification

StructuralSteel.ai provides technical reference information and links to authoritative sources. Project specifications, applicable legislation, current standards editions and requirements of the responsible engineer or authority should always be verified before fabrication or supply.