IS 3222 : Part 1 : 1989 Instrument Screws - Specification - Part 1 : Fasteners for Drawing Instruments

1 Scope

1.1 This standard (Part 1) specifies the general and dimensionalrequirements of knurled nuts, T-bolts, threaded bushes, needleholders and centre screws for drawing instruments.

2 References

IS 1367 : Part 5 :1980 Mechanical properties and test methods forsetscrews and similar threaded fasteners not undertensile stress

IS 1368 :1987Dimensions for ends of parts with external ISOmetric threads

IS 1369 :1982Dimension for screw thread runouts and undercuts

IS 2614 :1969Methods for sampling of fasteners

IS 3403 :1981Dimensions for knurls