Socket Button Head Cap Screws

Description:

Socket button head cap screws are mostly used when the need for reducing the size of equipment arises. The critical characteristic feature of these screws is the wide load bearing surface. This particular quality makes it resistant to looseness. They are mostly used in the designing of compartments in the overhead space of a house. An essential expectation from those spaces is the ability to provide more space with limited hardware. To assist in the better assembly of all the parts, these screws also come with a wide cross-section.

At ITA Fasteners, we ensure that all our fasteners allow you to reach the maximum potential of your work, irrespective of its size. These particular screws come in stainless steel, carbon steel or alloy steel materials to maximise its durability and anti-corrosion properties. You can get in touch with us for custom orders, and we would be happy to oblige.

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Dimensional Standards:

ISO 7380, DIN9427, BS 4168, ASME B18.3.4M

Size range:

Metric: M3 to M12

Hex Socket Button Head Cap Screws Dimensions

ISO 7380: Hex Socket Button Head Cap Screws

Thread d		M3	M4	M5	M6	M8	M10	M12	M16
P		0,5	0,7	0,8	1	1,25	1,5	1,75	2
b	ref.	18	20	22	24	28	32	36	44
c	max.	0,7	0,8	1	1,2	1,5	2	2,4	2,8
c	min.	0,55	0,65	0,8	1	1,25	1,7	2,1	2,5
d_a	max.	3,6	4,7	5,7	6,8	9,2	11,2	13,7	17,7
d_c	max.	6,9	9,4	11,8	13,6	17,8	21,9	26	34
d_c	min.	6,32	8,82	11,1	12,9	17,1	21,06	25,16	33
d_k	max.	5,2	7,2	8,8	10	13,2	16,5	19,4	26
d_k	min.	4,9	6,8	8,4	9,6	12,8	16,1	18,9	25,5
d_L	ref.	2,6	3,8	5	6	7,7	10	12	16
d_s	max.	3	4	5	6	8	10	12	16
d_s	min.	2,86	3,82	4,82	5,82	7,78	9,78	11,73	15,73
d_w	min.	5,74	8,24	10,4	12,2	16,4	20,22	24,32	32
e	min.	2,303	2,873	3,443	4,583	5,723	6,863	9,149	11,429
k	max.	1,65	2,2	2,75	3,3	4,4	5,5	6,6	8,8
k	min.	1,4	1,95	2,5	3	4,1	5,2	6,24	8,44
r₁	max.	3,7	4,6	5,75	6,15	7,95	9,8	11,2	15,3
r₁	min.	3,3	4,2	5,25	5,65	7,45	9,2	10,5	14,5
r_s	min.	0,1	0,2	0,2	0,25	0,4	0,4	0,6	0,6
r_t	min.	0,3	0,4	0,45	0,5	0,7	0,7	1,1	1,1
s	nom.	2	2,5	3	4	5	6	8	10
	max.	2,08	2,58	3,08	4,095	5,14	6,14	8,175	10,175
	min.	2,02	2,52	3,02	4,02	5,02	6,02	8,025	10,025
t	min.	1,04	1,3	1,56	2,08	2,6	3,12	4,16	5,2
w	min.	0,2	0,3	0,38	0,74	1,05	1,45	1,63	2,25

Thread d			M3		M4		M5		M6		M8		M10		M12		M16
l			ls and fg
l			ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg	ls	lg
nom.	min.	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.	min	max.
6	5,76	6,24	+	+	+	+
8	7,71	8,29	+	+	+	+	+	+
10	9,71	10,29	+	+	+	+	+	+	+	+
12	11,65	12,35	+	+	+	+	+	+	+	+	+	+
16	15,65	16,35	+	+	+	+	+	+	+	+	+	+	+	+
20	19,58	20,42	+	+	+	+	+	+	+	+	+	+	+	+	+	+
25	24,58	25,42	4,5	7	+	+	+	+	+	+	+	+	+	+	+	+	+	+
30	29,58	30,42	9,5	12	6,5	10	4	8	+	+	+	+	+	+	+	+	+	+
35	34,5	35,5			11,5	15	9	13	6	11	+	+	+	+	+	+	+	+
40	39,5	40,5			16,5	20	14	18	11	16	5,75	12	+	+	+	+	+	+
45	44,5	45,5					19	23	16	21	10,75	17	5,5	13	+	+	+	+
50	49,5	50,5					24	28	21	26	15,75	22	10,5	18	+	+	+	+
55	54,4	55,6							26	31	20,75	27	15,5	23	10,25	19	+	+
60	59,4	60,6							31	36	25,75	32	20,5	28	15,25	24	+	+
65	64,4	65,6									30,75	37	25,5	33	20,25	29	11	21
70	69,4	70,6									35,75	42	30,5	38	25,25	34	16	26
80	79,4	80,6									45,75	52	40,5	48	35,25	44	26	36
90	89,4	90,6											50,5	58	45,25	54	36	46

ASME B18.3: Hex Socket Button Head Cap Screws

EN 14399-4:2005(E)

Nominal Size	A		H		S	J	T	F		L	Tensile Test Load	Single Shear Strength of Body	Seating Torques in./lbs.
	Head Diameter		Head Height		Head Side Height	Hex Socket Size	Key Engage- ment	Fillet Transition Diameter		Max Standard Length
	Max	Min	Max	Min	Ref	Nom	Min	Max	Min	Nom	Lb.	Lbs., Min.	Coarse Thread	Fine Thread
4	0.213	0.201	0.059	0.051	0.015	1/16	0.035	0.132	0.122	0.50	840	950	7.0	8.
6	0.262	0.250	0.073	0.063	0.015	5/64	0.044	0.158	0.148	0.63	1,260	1,400	13.	15.
8	0.312	0.298	0.087	0.077	0.015	3/32	0.052	0.194	0.184	0.75	1,940	2,000	25.	26.
10	0.361	0.347	0.101	0.091	0.020	1/8	0.070	0.220	0.210	1.00	2,440	2,700	45.	48.
1/4	0.437	0.419	0.132	0.122	0.031	5/32	0.087	0.290	0.280	1.00	4,430	4,700	95.	110.
5/16	0.547	0.527	0.166	0.152	0.031	3/16	0.105	0.353	0.343	1.00	7,300	7,300	190.	210.
3/8	0.656	0.636	0.199	0.185	0.031	7/32	0.122	0.415	0.405	1.25	10,800	10,600	300.	300.
1/2	0.875	0.851	0.265	0.245	0.046	5/16	0.175	0.560	0.540	2.00	19,800	18,800	900.	960.
5/8	1.000	0.970	0.331	0.311	0.062	3/8	0.210	0.685	0.665	2.00	31,500	29,400	1,700	1,900

Tolerance on Length			Nominal Screw Size				Nominal Screw Length
			Nominal Screw Size				Up to 1 in., Inclusive				Over 1 in. to 2-1/2 in., Inclusive
			0 thru 3/8, Inclusive				-0.03				-0.04
			1/2 and 5/8, Inclusive				-0.03				-0.06