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.

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
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
  

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
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
  

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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