Button Socket Cap Screws

Button socket cap screws are favored not only for their practicality but also for their aesthetic appeal, making them ideal for use when the screw head is visible outside the assembly. Additionally, they are selected when clearance is restricted, and a socket drive is necessary. However, it’s important to note that due to their sleek design, button sockets may not handle as much stress as socket head cap screws, as their heads are comparatively smaller.

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Specifications & Technical Data

Nickel Systems stocks the button head cap screws needed for your next project. Use our specifications & technical data sheets to select the size of your specific fastener.

Download our Button Head Cap Screw Dimensioning Table

Dimensions


Nominal Size	A		H		S	J	T	F
	Head Diameter		Head Height		Head Side Height	Hex Socket Size	Key Engagement	Fillet Transition Diameter
	Max	Min	Max	Min	Ref	Nom	Min	Max	Min
4	0.213	0.201	0.059	0.051	0.015	1/16	0.035	0.132	0.122
6	0.262	0.250	0.073	0.063	0.015	5/64	0.044	0.158	0.148
8	0.312	0.298	0.087	0.077	0.015	3/32	0.052	0.194	0.184
10	0.361	0.347	0.101	0.091	0.020	1/8	0.070	0.220	0.210
1/4	0.437	0.419	0.132	0.122	0.031	5/32	0.087	0.290	0.280
5/16	0.547	0.527	0.166	0.152	0.031	3/16	0.105	0.353	0.343
3/8	0.656	0.636	0.199	0.185	0.031	7/32	0.122	0.415	0.405
1/2	0.875	0.851	0.265	0.245	0.046	5/16	0.175	0.560	0.540
5/8	1.000	0.970	0.331	0.311	0.062	3/8	0.210	0.685	0.665
3/4	1.125	1.105	0.375	0.355	0.062	7/16	0.245	0.740	0.720

Button Socket Cap Screw Specifications

Standard (ASME/ANSI)
- ASME B18.3-1998
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.