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Direct Tension Indicators - Compressible Washers

BS 7644-1 - 1993

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For Nominal Thread Diameter

M12

M16

M20

M22

M24

M27

M30

M33

M36

d	min
d	max
d_c	min
d_c	max
h	min
H	max

12.8	16.8	21	23	25	28	31	34	37.2
13.5	17.5	21.8	23.8	25.8	29	32	35	38
25	31	38	43	48	54	57	67	77
30.5	36.5	43.5	48.5	53.5	60	63	76	83
2.5	3	3.5	4	4	4	4	4	4
5.5	6	6.5	7	7	7	7	7.5	7.5

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Similar Standards

1	[EN] EN 14399 (-9 HB washer) - 2009	High-strength structural bolting assemblies for preloading - Part 9: System HR or HV — Bolt face washers (HB)
2	[ISO] ISO 7415 - 1984	Plain Washers For High-Strength Structural Bolting,Hardened And Tempered
3	[DIN] DIN 433 (-1) - 1990	Product Grade A, Up To Hardness 250 Hv, Primarily For Cheese Head Screws
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