Hexagon Socket Countersunk Head Cap Screws DIN7991 High Quality China Supplier

Product Introduction

Hexagon Socket Countersunk Head Cap Screws, also known as countersunk Head Flat Head Screws, Hex Socket Screws. Its head is conical in shape with a concave hexagon in the middle. After Hexagon Socket Countersunk Head Cap Screws are installed, its head can be embedded in the installation plane, so that the surface is smooth and beautiful.

It's available in carbon steel, stainless steel and more. Carbon steel Hexagon Socket Countersunk Head Cap Screws have performance ratings of 8.8, 10.9, and 12.9. Stainless steel Hexagon Socket Countersunk Head Cap Screws are generally SUS304, SUS306.

It's easy to install and disassemble, and are widely used in the fields of machinery manufacturing and installation.

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Product Details

SIZE: M3-M24

MATEAIL: Carbon Steel, Stainless Steel

STANDARD: DIN7991, ISO10462

8.8, 10.9, 12.9

SURFACE TREATMENT: ZP, HDG, BLACK, Dacromet

CUSTOMIZED SUPPORT: YES

Product Gallery

Stainless Steel Hexagon Socket Countersunk Head Cap Screws

High Strength Hexagon Socket Countersunk Head Cap Screws

Carbon Steel Hexagon Socket Countersunk Head Cap Screws

DIN7991 Hexagon Socket Countersunk Head Cap Screws Specifications

Screw Thread
dM3M4M5M6M8M10M12(M14)M16(M18)M20(M22)M24
PPitch0.50.70.811.251.51.75222.52.52.53
αtol.(+2)90°90°90°90°90°90°90°90°90°90°90°60°60°
bL≤12512141618222630343842465054
125＜L ≤ 200///24283236404448525660
L＞200/////4549535761656973
dkmax=nominal size681012162024273033363639
min5.77.649.6411.5715.5719.4823.4826.4829.4832.3835.3835.3838.38
dsmax=nominal size345681012141618202224
min2.863.824.825.827.789.7811.7313.7315.7317.7319.6721.6723.67
emin2.32.873.444.585.726.869.1511.4311.4313.7213.721616
kmax1.72.32.83.34.45.56.577.588.513.114
sNominal Size22.534568101012121414
min2.022.523.024.025.026.028.02510.02510.02512.03212.03214.03214.032
max2.12.63.14.125.146.148.17510.17510.17512.21212.21214.21214.212
tmax=nominal size1.21.82.32.53.54.44.64.85.35.55.98.810.3
min0.951.552.052.253.24.14.34.555.25.68.449.87

Screw Thread d	M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
P	Pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
α	tol.(+2)	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	60°	60°
b	L≤125	12	14	16	18	22	26	30	34	38	42	46	50	54
125＜L ≤ 200	/	/	/	24	28	32	36	40	44	48	52	56	60
L＞200	/	/	/	/	/	45	49	53	57	61	65	69	73
dk	max=nominal size	6	8	10	12	16	20	24	27	30	33	36	36	39
min	5.7	7.64	9.64	11.57	15.57	19.48	23.48	26.48	29.48	32.38	35.38	35.38	38.38
ds	max=nominal size	3	4	5	6	8	10	12	14	16	18	20	22	24
min	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67
e	min	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72	13.72	16	16
k	max	1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
s	Nominal Size	2	2.5	3	4	5	6	8	10	10	12	12	14	14
min	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032	12.032	14.032	14.032
max	2.1	2.6	3.1	4.12	5.14	6.14	8.175	10.175	10.175	12.212	12.212	14.212	14.212
t	max=nominal size	1.2	1.8	2.3	2.5	3.5	4.4	4.6	4.8	5.3	5.5	5.9	8.8	10.3
min	0.95	1.55	2.05	2.25	3.2	4.1	4.3	4.5	5	5.2	5.6	8.44	9.87

ISO10462 Hexagon Socket Countersunk Head Cap Screws Specifications

Screw Thread
dM3M4M5M6M8M10M12(M14)M16M20
PPitch　0.50.70.811.251.51.75222.5
dkTheoreticalmax6.728.9611.213.4417.9222.426.8830.833.640.32
Actualmin5.547.539.4311.3415.2419.2223.1226.5229.0136.05
dsmax　345681012141620
min　2.863.824.825.827.789.7811.7313.7315.7319.67
emin　2.3032.8733.4434.5835.7236.8639.14911.42911.42913.716
kmax　1.862.483.13.724.966.27.448.48.810.16
sNominal Size　22.534568101012
max　2.082.583.084.0955.146.148.17510.17510.17512.212
min　2.022.523.024.025.026.028.02510.02510.02512.032
tmin　1.11.51.92.233.64.34.54.85.6
Minimum tensile   load(N)-8.8　3220562090801290023400371005390073600100000162000
Minimum tensile   load(N)-10.9　41807300118001670030500482007020096000130000204000
Minimum tensile   load(N)-12.9　491085601380019600357005660082400112000154000239000

Screw Thread d	M3	M4	M5	M6	M8	M10	M12	(M14)	M16	M20
P	Pitch		0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5
dk	Theoretical	max	6.72	8.96	11.2	13.44	17.92	22.4	26.88	30.8	33.6	40.32
Actual	min	5.54	7.53	9.43	11.34	15.24	19.22	23.12	26.52	29.01	36.05
ds	max		3	4	5	6	8	10	12	14	16	20
min		2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
e	min		2.303	2.873	3.443	4.583	5.723	6.863	9.149	11.429	11.429	13.716
k	max		1.86	2.48	3.1	3.72	4.96	6.2	7.44	8.4	8.8	10.16
s	Nominal Size		2	2.5	3	4	5	6	8	10	10	12
max		2.08	2.58	3.08	4.095	5.14	6.14	8.175	10.175	10.175	12.212
min		2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032
t	min		1.1	1.5	1.9	2.2	3	3.6	4.3	4.5	4.8	5.6
Minimum tensile load(N)-8.8		3220	5620	9080	12900	23400	37100	53900	73600	100000	162000
Minimum tensile load(N)-10.9		4180	7300	11800	16700	30500	48200	70200	96000	130000	204000
Minimum tensile load(N)-12.9		4910	8560	13800	19600	35700	56600	82400	112000	154000	239000

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