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BS 325 - 1947

Black Square Nuts

BS 325 - 1947 粗制四方螺母Table7

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Dimensional Specifications — BS 325 - 1947 (mm)

Size	P	k_max	s_max	s_min	k_nominal
1/2	8	1.45	0.93	0.87	1.48
1/4	18	0.515	0.27	0.25	0.525
3/8	11	0.985	0.6	0.56	1.01
5/16	14	0.695	0.39	0.37	0.71
7/16	9	1.27	0.81	0.75	1.3

Related Standards

GB 39 - 1988— Square Nuts - Product Grade C GB /T 2153 - 1991— Rhombic Nut DIN 562 - 2013— Square Thin Nuts, Product Grade B DIN 557 - 1994— Square Nuts-Product Grade C DIN 562 - 1987— Square Thin Nuts, Product Grade B DIN 557 - 1985— Square Nuts-Product Grade C DIN 798 - 2009— Special Foundation Nuts DIN 798 - 1972— Special Foundation Nuts for Special Foundation Bolts According to DIN 797 JIS B 1163 - 2009

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