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BS 7644

Direct Tension Indicators - Bolt Face Washers

BS 7644-2 - 1993 螺栓面垫圈

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Dimensional Specifications — BS 7644 (mm)

Size	P	k_max	k_min	s_max	s_min	k_nominal
M12	17.2	3.1	4.6	17.7	27.7	29
M16	23.34	3.1	4.6	23.84	37.4	39
M20	28.34	3.4	4.6	28.84	45.4	47
M22	34.5	3.4	4.6	35	54.1	56
M24	37.5	3.4	4.6	38	60.1	62

Related Standards

GB /T 1231 (washer) - 2024— High Strength Plain Washers for Steel Structural GB /T 3632 (H) - 2008— Torshear Type Plain Washer for Steel Structures GB /T 1230 - 2006— High Strength Plain Washers for Steel Structural GB /T 18230.5 - 2000— Plain Washers for High-strength Structural Bolting Hardened and Tempered GB /T 3632 (W) - 1995— Torshear Type Plain Washer for Steel Structures GB /T 1230 - 1991— High Strength Plain Washers for Steel Structures GB /T 32076.11 - 2024— High-strength Structural Bolting Assemblies for Preloading Part 11: Load Indicating Washer GB /T 32076.11 (HN) - 2024— High-strength Structural Bolting Assemblies for Preloading Part 11: Nut Face Washers (HN)

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