IS 3726 : 2003 Thumb Screws - Specification

1 Scope

This standard covers the requirements of knurled thumb screws and slottedknurled thumb screws in the size range of 1.0 to 10 mm.

2 References

IS 1367 Technical supply conditions for threaded steelfasteners:

     Part 1 : 2002 General requirements of bolts, screws, studsand nuts

     Part 2 : 2002 Tolerances for fasteners - Bolts, screws, studsand nuts - Product
     grades A, B and C

     Part 3 : 2002 Mechanical properties of fasteners made ofcarbon steel and alloy steel - Bolts,
     screws and studs

     Part 9 : Sec 1 : 1993 Surface discontinuities,Section 1 Bolts, screws and studs for
     general applications

     Part 11 : 2002 Electroplated coatings

     Part 14 : Sec 3 : 2002 Mechanical properties of corrosion resistantstainless-steel fasteners,
     Section 3 Set screws and similar fasteners not under tensile stress

     Part 17 : 1986 Inspection, sampling and acceptance procedure

     Part 18 : 1996 Packaging

     Part 20 : 1996 Torsional test and minimum torques for boltsand screws with
     nominal diameters 1 mm to 10 mm

IS 1368 : 2002 Fasteners - Ends of parts with external ISOmetric threads

IS 1369 Fasteners - Threads run-out and under-cuts:

     Part 1 : 1993 Dimensions for screw thread run-out forexternal ISO metric threads

     Part 2 : 1993 Dimensions for screw thread under-cut forexternal ISO metric threads

IS 3403 : 1981 Dimensions for knurls

IS 4218 ISO general purpose metric screw threads:

     Part 1 : 2001 Basic profile

     Part 2 : 2001 General plan

     Part 3 : 1999 Basic dimensions

     Part 4 : 2001 Selected sizes for screws, bolts and nuts

IS 6649 : 1985 Hardened and tempered washers for high strengthstructural bolts and nuts

IS 14962 ISO General purposes metric screw threads -Tolerances:

     Part 1 : 2001 Principles and basic details

     Part 2 : 2001 Limits of sizes for general purposes internaland external screw
     threads - Medium quality

     Part 3 : 2001 Deviations for constructional screw threads