Ludhiana, Punjab
← DIN Standards IS 1363 (Part 1)

IS 1363-1 (Hex Head Bolts, Product Grade C)

IS 1363 Part 1 specifies hexagon head bolts to product grade C (a coarser tolerance class) in sizes from M5 to M64 — India’s general-purpose black bolt standard.

Steel Grades
4.6
Finish
Plain, Black Oxide
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