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BS 3410

Large Birght Washers for use with UNC, UNF, B.S.W. and B.S.F Fasteners [Table 4]

BS 3410 (-4) - 1961 适用于UNC、UNF、B.S.W.和B.S.F的精制大平垫圈 [Table 4]

See all versions and complete specifications: Large Birght Washers for use with UNC, UNF, B.S.W. and B.S.F Fasteners [Table 4] — Full Specification Page

Dimensional Specifications — BS 3410 (mm)

Size	P	k_max	k_min	s_max	s_min	k_nominal
1/4	0.333	0.072	0.048	0.328	0.750	0.745
3/8	0.593	0.104	0.056	0.588	1.250	1.240
5/16	0.458	0.092	0.056	0.453	1.000	0.995
7/16	0.781	0.128	0.072	0.776	1.625	1.615

Related Standards

GB 96 - 1985— Plain Washers-Large Series - Product Grade A and C GB /T 5287 - 2002— Plain Washers - Extra Large Serles - Product Grade C GB /T 96.1 - 2002— Plain Washers - Large Series - Product Grade A GB /T 96.2 - 2002— Plain Washers - Large Series - Product Grade C GB /T 97.4 (L) - 2002— Plain Washers (Large) for Combination Screw GB /T 5287 - 1985— Plain Washers - Extra Large Series - Product Grade C DIN 440 (R) - 1990— Extra Large Washers with Round Hole for use in Timber Constructions DIN 9021 - 1990— Large Plain Washers - Product Grade A（dc ≈ 3d）

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