Hex Flange Bolt DIN6921 High Strength Galvanized Carbon Steel Stainless Steel Best Quality China Manufacturer

Hex flange bolt Introduction

Hex flange bolts are a common fastener often used to join two or more parts. Their name comes from the design of their heads, which are hexagonal in shape.

Hex flange bolts are widely used in various fields, including machinery manufacturing, construction engineering, automobile manufacturing, aerospace, etc. Hex flange bolt are used to connect mechanical parts, structural frames, equipment, pipes, etc. to provide strong connections.

Two hex flange bolts made of stainless steel

Hex flange bolt Details

SIZE: M5-M20

MATEAIL: Carbon Steel, Stainless Steel

GRADE: 4.8, 8.8, 10.9, 12.9

STANDARD: DIN 6921, ISO 4162, EN 1665

SURFACE TREATMENT: ZP, HDG, BLACK, Dacromet

CUSTOMIZED SUPPORT: YES

DIN 6921 Hex Flange Bolt Specifications

    Screw Thread
d
    M5
    M6
    M8
    M10
    M12
    M14
    M16
    M20
  


    P
    Pitch
    Coarse thread
    0.8
    1
    1.25
    1.5
    1.75
    2
    2
    2.5
  

    Fine thread-1
    /
    /
    1
    1.25
    1.5
    1.5
    1.5
    1.5
  

    Fine thread-2
    /
    /
    /
    1
    1.25
    /
    /
    /
  

    b
    L≤125
    　
    16
    18
    22
    26
    30
    34
    38
    46
  

    125＜L≤200
    　
    /
    /
    28
    32
    36
    40
    44
    52
  

    L＞200
    　
    /
    /
    /
    /
    /
    /
    57
    65
  

    c
    min
    　
    1
    1.1
    1.2
    1.5
    1.8
    2.1
    2.4
    3
  

    da
    Form A
    max
    5.7
    6.8
    9.2
    11.2
    13.7
    15.7
    17.7
    22.4
  

    Form B
    max
    6.2
    7.4
    10
    12.6
    15.2
    17.7
    20.7
    25.7
  

    dc
    max
    　
    11.8
    14.2
    18
    22.3
    26.6
    30.5
    35
    43
  

    ds
    max
    　
    5
    6
    8
    10
    12
    14
    16
    20
  

    min
    　
    4.82
    5.82
    7.78
    9.78
    11.73
    13.73
    15.73
    19.67
  

    du
    max
    　
    5.5
    6.6
    9
    11
    13.5
    15.5
    17.5
    22
  

    dw
    min
    　
    9.8
    12.2
    15.8
    19.6
    23.8
    27.6
    31.9
    39.9
  

    e
    min
    　
    8.71
    10.95
    14.26
    16.5
    17.62
    19.86
    23.15
    29.87
  

    f
    max
    　
    1.4
    2
    2
    2
    3
    3
    3
    4
  

    k
    max
    　
    5.4
    6.6
    8.1
    9.2
    11.5
    12.8
    14.4
    17.1
  

    k1
    min
    　
    2
    2.5
    3.2
    3.6
    4.6
    5.1
    5.8
    6.8
  

    r1
    min
    　
    0.25
    0.4
    0.4
    0.4
    0.6
    0.6
    0.6
    0.8
  

    r2
    max
    　
    0.3
    0.4
    0.5
    0.6
    0.7
    0.9
    1
    1.2
  

    r3
    min
    　
    0.1
    0.1
    0.15
    0.2
    0.25
    0.3
    0.35
    0.4
  

    r4
    ≈
    　
    3
    3.4
    4.3
    4.3
    6.4
    6.4
    6.4
    8.5
  

    s
    max=nominal size
    　
    8
    10
    13
    15
    16
    18
    21
    27
  

    min
    　
    7.78
    9.78
    12.73
    14.73
    15.73
    17.73
    20.67
    26.67
  

    t
    max
    　
    0.15
    0.2
    0.25
    0.3
    0.35
    0.45
    0.5
    0.65
  

    min
    　
    0.05
    0.05
    0.1
    0.15
    0.15
    0.2
    0.25
    0.3
  

Screw Thread d	M5	M6	M8	M10	M12	M14	M16	M20
P	Pitch	Coarse thread	0.8	1	1.25	1.5	1.75	2	2	2.5
Fine thread-1	/	/	1	1.25	1.5	1.5	1.5	1.5
Fine thread-2	/	/	/	1	1.25	/	/	/
b	L≤125		16	18	22	26	30	34	38	46
125＜L≤200		/	/	28	32	36	40	44	52
L＞200		/	/	/	/	/	/	57	65
c	min		1	1.1	1.2	1.5	1.8	2.1	2.4	3
da	Form A	max	5.7	6.8	9.2	11.2	13.7	15.7	17.7	22.4
Form B	max	6.2	7.4	10	12.6	15.2	17.7	20.7	25.7
dc	max		11.8	14.2	18	22.3	26.6	30.5	35	43
ds	max		5	6	8	10	12	14	16	20
min		4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
du	max		5.5	6.6	9	11	13.5	15.5	17.5	22
dw	min		9.8	12.2	15.8	19.6	23.8	27.6	31.9	39.9
e	min		8.71	10.95	14.26	16.5	17.62	19.86	23.15	29.87
f	max		1.4	2	2	2	3	3	3	4
k	max		5.4	6.6	8.1	9.2	11.5	12.8	14.4	17.1
k1	min		2	2.5	3.2	3.6	4.6	5.1	5.8	6.8
r1	min		0.25	0.4	0.4	0.4	0.6	0.6	0.6	0.8
r2	max		0.3	0.4	0.5	0.6	0.7	0.9	1	1.2
r3	min		0.1	0.1	0.15	0.2	0.25	0.3	0.35	0.4
r4	≈		3	3.4	4.3	4.3	6.4	6.4	6.4	8.5
s	max=nominal size		8	10	13	15	16	18	21	27
min		7.78	9.78	12.73	14.73	15.73	17.73	20.67	26.67
t	max		0.15	0.2	0.25	0.3	0.35	0.45	0.5	0.65
min		0.05	0.05	0.1	0.15	0.15	0.2	0.25	0.3

Equivalent Standard

DIN EN 1665 Hex flange bolt ( Heavy Series )

    Thread Size
     d
    M5
    M6
    M8
    M10
    M12
    (M14)
    M16
    M20
  


    P
    Pitch
    0.8
    1
    1.25
    1.5
    1.75
    2
    2
    2.5
  

    b
    L≤125
    16
    18
    22
    26
    30
    34
    38
    46
  

    125＜L≤200
    /
    /
    28
    32
    36
    40
    44
    52
  

    L＞200
    /
    /
    /
    /
    /
    /
    57
    65
  

    dc
    max
    11.8
    14.2
    18
    22.3
    26.6
    30.5
    35
    43
  

    ds
    max
    5
    6
    8
    10
    12
    14
    16
    20
  

    min
    4.82
    5.82
    7.78
    9.78
    11.73
    13.73
    15.73
    19.67
  

    e
    min
    8.71
    10.95
    14.26
    17.62
    19.86
    23.15
    26.51
    33.23
  

    k
    max
    5.8
    6.6
    8.1
    10.4
    11.8
    13.7
    15.4
    18.9
  

    s
    max
    8
    10
    13
    16
    18
    21
    24
    30
  

    min
    7.78
    9.78
    12.73
    15.73
    17.73
    20.67
    23.67
    29.67
  

    c
    min
    1
    1.1
    1.2
    1.5
    1.8
    2.1
    2.4
    3
  

Thread Size d	M5	M6	M8	M10	M12	(M14)	M16	M20
P	Pitch	0.8	1	1.25	1.5	1.75	2	2	2.5
b	L≤125	16	18	22	26	30	34	38	46
125＜L≤200	/	/	28	32	36	40	44	52
L＞200	/	/	/	/	/	/	57	65
dc	max	11.8	14.2	18	22.3	26.6	30.5	35	43
ds	max	5	6	8	10	12	14	16	20
min	4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
e	min	8.71	10.95	14.26	17.62	19.86	23.15	26.51	33.23
k	max	5.8	6.6	8.1	10.4	11.8	13.7	15.4	18.9
s	max	8	10	13	16	18	21	24	30
min	7.78	9.78	12.73	15.73	17.73	20.67	23.67	29.67
c	min	1	1.1	1.2	1.5	1.8	2.1	2.4	3

Equivalent Standard

ISO 4162 Hex flange bolt ( Small Series )

    Screw Thread
     d
    M5
    M6
    M8
    M10
    M12
    (M14)
    M16
  


    P
    Pitch
    　
    0.8
    1
    1.25
    1.5
    1.75
    2
    2
  

    b
    L≤125
    　
    16
    18
    22
    26
    30
    34
    38
  

    125＜L≤200
    　
    /
    /
    28
    32
    36
    40
    44
  

    L＞200
    　
    /
    /
    /
    /
    /
    /
    57
  

    dc
    max
    　
    11.4
    13.6
    17
    20.8
    24.7
    28.6
    32.8
  

    ds
    max
    　
    5
    6
    8
    10
    12
    14
    16
  

    min
    　
    4.82
    5.82
    7.78
    9.78
    11.73
    13.73
    15.73
  

    e
    min
    　
    7.44
    8.56
    10.8
    14.08
    16.32
    19.68
    22.58
  

    k
    max
    　
    5.6
    6.8
    8.5
    9.7
    11.9
    12.9
    15.1
  

    s
    max
    　
    7
    8
    10
    13
    15
    18
    21
  

    min
    　
    6.64
    7.64
    9.64
    12.57
    14.57
    17.57
    20.16
  

    c
    min
    　
    1
    1.1
    1.2
    1.5
    1.8
    2.1
    2.4
  

    da
    max
    Type F
    5.7
    6.8
    9.2
    11.2
    13.7
    15.7
    17.7
  

    Type U
    6.2
    7.5
    10
    12.5
    15.2
    17.7
    20.5
  

    du
    max
    　
    5.5
    6.6
    8.8
    10.8
    12.8
    14.8
    17.2
  

    dw
    min
    　
    9.4
    11.6
    14.9
    18.7
    22.5
    26.4
    30.6
  

    k1
    min
    　
    2.3
    2.9
    3.8
    4.3
    5.4
    5.6
    6.7
  

    f
    max
    　
    1.4
    1.6
    2.1
    2.1
    2.1
    2.1
    3.2
  

    r1
    min
    　
    0.2
    0.25
    0.4
    0.4
    0.6
    0.6
    0.6
  

    r2 ①
    max
    　
    0.3
    0.4
    0.5
    0.6
    0.7
    0.9
    1
  

    r3
    max
    　
    0.25
    0.26
    0.36
    0.45
    0.54
    0.63
    0.72
  

    min
    　
    0.1
    0.11
    0.16
    0.2
    0.24
    0.28
    0.32
  

    r4
    Ref.
    　
    4
    4.4
    5.7
    5.7
    5.7
    5.7
    8.8
  

    V
    max
    　
    0.15
    0.2
    0.25
    0.3
    0.35
    0.45
    0.5
  

    min
    　
    0.05
    0.05
    0.1
    0.15
    0.15
    0.2
    0.25
  

Screw Thread d	M5	M6	M8	M10	M12	(M14)	M16
P	Pitch		0.8	1	1.25	1.5	1.75	2	2
b	L≤125		16	18	22	26	30	34	38
125＜L≤200		/	/	28	32	36	40	44
L＞200		/	/	/	/	/	/	57
dc	max		11.4	13.6	17	20.8	24.7	28.6	32.8
ds	max		5	6	8	10	12	14	16
min		4.82	5.82	7.78	9.78	11.73	13.73	15.73
e	min		7.44	8.56	10.8	14.08	16.32	19.68	22.58
k	max		5.6	6.8	8.5	9.7	11.9	12.9	15.1
s	max		7	8	10	13	15	18	21
min		6.64	7.64	9.64	12.57	14.57	17.57	20.16
c	min		1	1.1	1.2	1.5	1.8	2.1	2.4
da	max	Type F	5.7	6.8	9.2	11.2	13.7	15.7	17.7
Type U	6.2	7.5	10	12.5	15.2	17.7	20.5
du	max		5.5	6.6	8.8	10.8	12.8	14.8	17.2
dw	min		9.4	11.6	14.9	18.7	22.5	26.4	30.6
k1	min		2.3	2.9	3.8	4.3	5.4	5.6	6.7
f	max		1.4	1.6	2.1	2.1	2.1	2.1	3.2
r1	min		0.2	0.25	0.4	0.4	0.6	0.6	0.6
r2 ①	max		0.3	0.4	0.5	0.6	0.7	0.9	1
r3	max		0.25	0.26	0.36	0.45	0.54	0.63	0.72
min		0.1	0.11	0.16	0.2	0.24	0.28	0.32
r4	Ref.		4	4.4	5.7	5.7	5.7	5.7	8.8
V	max		0.15	0.2	0.25	0.3	0.35	0.45	0.5
min		0.05	0.05	0.1	0.15	0.15	0.2	0.25

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