Click Specification

(Non-preferred) dimensions in parentheses.

Unified Hexagon Thick Slotted Nuts - Norminal series

BS 1768 - 1963

Display drawing:

Thread Size
d

1/4

5/16

3/8

7/16

1/2

(9/16)

5/8

3/4

7/8

1-1/8

1-1/4

(1-3/8)

1-1/2

k	max
k	min
n	max
n	min
t	Nominal Size
w	max
w	min
s	max
s	min
e	max
d_w	max
d_w	min

0.286	0.333	0.411	0.458	0.567	0.614	0.724	0.822	0.916	1.015	1.176	1.275	1.400	1.530
0.276	0.323	0.401	0.448	0.557	0.604	0.714	0.802	0.896	0.985	1.136	1.225	1.350	1.470
0.088	0.104	0.135	0.135	0.166	0.166	0.198	0.198	0.198	0.260	0.260	0.322	0.322	0.385
0.078	0.094	0.125	0.125	0.156	0.156	0.188	0.188	0.188	0.250	0.250	0.312	0.312	0.375
0.062	0.094	0.109	0.125	0.141	0.156	0.187	0.219	0.250	0.281	0.328	0.359	0.391	0.422
0.224	0.239	0.302	0.333	0.427	0.458	0.536	0.604	0.666	0.734	0.848	0.916	1.009	1.108
0.214	0.229	0.292	0.323	0.417	0.448	0.526	0.584	0.646	0.704	0.808	0.866	0.959	1.048
0.4375	0.5000	0.5625	0.6875	0.7500	0.8750	0.9375	1.1250	1.3125	1.5000	1.6875	1.8750	2.0625	2.2500
0.4305	0.4930	0.5545	0.6795	0.7420	0.8670	0.9295	1.1150	1.3005	1.4880	1.6575	1.8300	2.0175	2.2050
0.505	0.577	0.650	0.794	0.866	1.010	1.083	1.300	1.515	1.732	1.948	2.165	2.382	2.598
0.421	0.483	0.545	0.668	0.730	0.855	0.918	1.100	1.285	1.473	1.641	1.813	2.001	2.188
0.411	0.473	0.535	0.658	0.720	0.845	0.908	1.090	1.275	1.463	1.625	1.797	1.985	2.172

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