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Home > Fasteners > Socket Screws & Fasteners > Square Head Set Screw > 1/4-20 X 1/2 CASE HARDENED SQUARE HEAD SET SCREW CUP POINT

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Item #: SHSA0250050

1/4-20 X 1/2 CASE HARDENED SQUARE HEAD SET SCREW CUP POINT

$0.21286/EA

Quantity	Price
Quantity	Price
1	$0.21286/ EA
1780	$0.20176/ EA
7090	$0.18338/ EA
31910	$0.12479/ EA

Qty

In Stock

Product Specification
Governing Standards
Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsAlloy Steel Square Head Set Screw

Finished bolt and cap screw dimensions

Per ASME B18.6.2-1998
Size	Nominal	UNC	UNF	F		G		H		K		S	U	W
				Width Across Flats		Width Across Corners		Head Height		Neck Relief Diameter		Neck Relief Fillet Radius	Neck Relief Width	Head Radius
				Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Min
#10	0.1900	24	32	0.1880	0.1800	0.2650	0.2470	0.1480	0.1340	0.1450	0.1400	0.0270	0.0830	0.4800
1/4	0.2500	20	28	0.2500	0.2410	0.3540	0.3310	0.1960	0.1780	0.1850	0.1700	0.0320	0.1000	0.6200
5/16	0.3125	18	24	0.3120	0.3020	0.4420	0.4150	0.2450	0.2240	0.2400	0.2250	0.0360	0.1110	0.7800
3/8	0.3750	16	24	0.3750	0.3620	0.5300	0.4970	0.2930	0.2700	0.2940	0.2790	0.0410	0.1250	0.9400
7/16	0.4375	14	20	0.4380	0.4230	0.6190	0.5810	0.3410	0.3150	0.3450	0.3300	0.0460	0.1430	1.0900
1/2	0.5000	13	20	0.5000	0.4840	0.7070	0.6650	0.3890	0.3610	0.4000	0.3850	0.0500	0.1540	1.2500
9/16	0.5625	12	18	0.5620	0.5450	0.7950	0.7480	0.4370	0.4070	0.4540	0.4390	0.0540	0.1670	1.4100
5/8	0.6250	11	18	0.6250	0.6060	0.8840	0.8330	0.4850	0.4520	0.5070	0.4920	0.0590	0.1820	1.5600
3/4	0.7500	10	16	0.7500	0.7290	1.0600	1.0010	0.5820	0.5440	0.6200	0.6050	0.0650	0.2000	1.8800
7/8	0.8750	9	14	0.8750	0.8520	1.2370	1.1700	0.6780	0.6350	0.7310	0.7160	0.0720	0.2220	2.1900
1	1.0000	8	14	1.0000	0.9740	1.4140	1.3370	0.7740	0.7260	0.8380	0.8230	0.0810	0.2500	2.5000
1 1/8	1.1250	7	12	1.1250	1.0960	1.5910	1.5050	0.8700	0.8170	0.9390	0.9140	0.0920	0.2830	2.8100
1 1/4	1.2500	7	12	1.2500	1.2190	1.7680	1.6740	0.9660	0.9080	1.0640	1.0390	0.0920	0.2830	3.1200
1 3/8	1.3750	6	12	1.3750	1.3420	1.9450	1.8430	1.0630	1.0000	1.1590	1.1340	0.1090	0.3330	3.4400
1 1/2	1.5000	6	12	1.5000	1.4640	2.121	2.0100	1.1590	1.0910	1.2840	1.2590	0.1090	0.3330	3.7500

All dimensions are in inches.