Machine Screw Hex Nuts

A machine screw hex nut is a six-sided internally threaded fastener that is meant to be paired with a machine screw. For this reason, machine screw hex nuts are limited to sizes ranging from #0 to #10. Due to their small size, these nuts are typically used for light-duty fastening applications.

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Specifications & Technical Data

Dimensions


Nominal Size	Basic Major Diameter of Thread	F			G₁		H		Bearing Surface Runout to Thread Axis, FIM
		Width Across Flats			Width Across Corners		Thickness
		Basic	Min	Max	Min	Max	Min	Max
0	0.060	5/32	0.150	0.156	0.171	0.180	0.043	0.050	0.005
1	0.073	5/32	0.150	0.156	0.171	0.180	0.043	0.050	0.005
2	0.086	3/16	0.180	0.188	0.205	0.217	0.057	0.066	0.006
3	0.099	3/16	0.180	0.188	0.205	0.217	0.057	0.066	0.006
4	0.112	1/4	0.241	0.250	0.275	0.289	0.087	0.098	0.009
5	0.125	5/16	0.302	0.312	0.344	0.361	0.102	0.114	0.011
6	0.138	5/16	0.302	0.312	0.344	0.361	0.102	0.114	0.011
8	0.164	11/32	0.332	0.344	0.378	0.397	0.117	0.130	0.1012
10	0.190	3/8	0.362	0.375	0.413	0.433	0.117	0.130	0.013
12	0.216	7/16	0.423	0.438	0.482	0.505	0.148	0.161	0.015
1/4	0.250	7/16	0.423	0.438	0.482	0.505	0.178	0.193	0.015
5/16	0.312	9/16	0.545	0.562	0.621	0.65	0.208	0.225	0.020
3/8	0.375	5/8	0.607	0.625	0.692	0.722	0.239	0.257	0.021

Machine Screw Hex Nut Specifications

Standard (ASME/ANSI)
- ASME B18.6.3
- ASME B18.2.2 – 2010
Metric (IFI)
- DIN 934

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Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.