IS 12427 : 2001 Fasteners - Threaded Steel Fasteners - Hexagon Head Transmission Tower Bolts - Specification

ICS 21.060.10 PGD 37
Reaffirmed 2021

1 Scope

1.1 This standard covers the requirements for hot-dip galvanizedhexagon head transmission tower bolts in the size range M12 to M24for use in the construction of transmission towers, sub-stationsand similar steel structures.

1.2 The bolts covered in this standard are not suitable forapplications requiring improved low temperatures characteristics.

2 References

IS 1367 : Part 2 : 1979 Technical supply conditions for threadedsteel fasteners:
Part 2 Product grades and tolerances
IS 1367 : Part 3 : 1991 Fasteners - Threaded steel - Technical
ISO 898-1 : 1988 supply conditions:
Part 3 Mechanical properties and testmethods for bolts, screws and studs withfull loadability
IS 1367 : Part 9 : Sec 1 : 1993 Technical supply conditions for threaded
ISO 6157-1 : 1988 steel fasteners:
Part 9 Surface discontinuities,
Section 1 Bolts, screws and studs for general applications
IS 1367 : Part 13 : 1983 Technical supply conditions for threadedsteel fasteners:
Part 13 Hot-dip galvanized coatings onthreaded fasteners
IS 1367 : Part 17 : 1996 Industrial fasteners - Threaded steel
ISO 3269 : 1988 fasteners - Technical supply conditions:
Part 17 Inspection, sampling andacceptance procedure
IS 1367 : Part 18 : 1996 Industrial fasteners - Threaded steelfasteners - Technical supply conditions:
Part 18 Packaging
IS 1368 : 1980 Dimensions for ends of parts with
ISO 4753 : 1983 external ISO metric threads
IS 2016 : 1967 Plain washers
IS 2334 : 2001 ISO general purpose metric screw
ISO 1502 : 1996 thread - Gauges and gauging
IS 4218 ISO general purpose metric screwthreads:
Part 1 : 2001 Basic profiles
ISO 68-1 : 1998
Part 2 : 2001 General plan
ISO 261 : 1998
Part 3 : 1999 Basic dimensions
ISO 724 : 1993
Part 4 : 2001 Selected sizes for screws, bolts and
ISO 262 : 1998 nuts
IS 4759 : 1996 Hot-dip zinc coatings on structuralsteel and other allied products
IS 14394 : 1996 Industrial fasteners - Hexagon nuts ofproduct grade C - Hot-dip galvanized -Specification (size range M12 to M36)