Low Head Socket Cap Screw

A low head socket cap screw, also known as a low-profile socket cap screw, is a type of fastener used in mechanical applications. It has a hexagonal socket drive and a cylindrical head with a reduced height compared to standard socket cap screws. This reduced head height allows the screw to sit flush or nearly flush with the surface it is fastening, making it ideal for applications where space or clearance is limited. These screws are often used in situations where a standard socket cap screw would interfere with other components or where a lower profile is desired.

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Specifications & Technical Data

Dimensions


Nominal Size	D	F		A		H		J	T
	Basic Screw Diameter	Body Diameter		Head Diameter		Head Height		Hex Socket Size	Key Engagement
	Basic Screw Diameter	Max	Min	Max	Min	Max	Min	Hex Socket Size	Min
#4	0.1120	0.1120	0.1075	0.183	0.176	0.059	0.053	0.050	0.038
#5	0.1250	0.1250	0.1202	0.205	0.198	0.065	0.059	1/16	0.044
#6	0.1380	0.1380	0.1329	0.226	0.218	0.072	0.066	1/16	0.050
#8	0.1640	0.1640	0.1585	0.270	0.262	0.085	0.079	5/64	0.060
#10	0.1900	0.1900	0.1840	0.312	0.303	0.098	0.092	3/32	0.072
1/4	0.2500	0.2500	0.2435	0.375	0.365	0.127	0.121	1/8	0.094
5/16	0.3125	0.3125	0.3053	0.437	0.431	0.158	0.152	5/32	0.110
3/8	0.3750	0.3750	0.3678	0.562	0.550	0.192	0.182	3/16	0.115
7/16	0.4375	0.4375	0.4294	0.625	0.618	0.223	0.213	7/32	0.135
1/2	0.5000	0.5000	0.4919	0.750	0.743	0.254	0.244	1/4	0.151
5/8	0.6250	0.6250	0.6163	0.875	0.867	0.316	0.306	5/16	0.250

Low Head Socket Cap Screw Specifications

Standard (ASME/ANSI)
- ASME B18.3 2012
Metric (IFI)

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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.