ENQUIRY

DIN 933 / DIN EN ISO 4017

Hex head screws

Nominal size and thread
Pitch of thread P
Depth of washer face c
Transition Diameter da
Dia. of washer
face dw
Width across corners e
Thickness of head k
Radius under head  r
Width across flats
s
diameter
d
coarse pitch
min.
max.
max.
min.
min.
nom.
min.
min.
max.
M10
1.50
0.15
0.6
11.20
14.47
17.59
6.40
0.4
15.57
16.00
M12
1.75
0.15
0.6
13.70
15.47
19.95
7.50
0.6
17.57
18.00
M14
2.00
0.15
0.6
15.70
19.15
22.78
8.80
0.6
20.16
21.00
M16
2.00
0.2
0.8
17.70
22.00
26.17
10.00
0.6
23.16
24.00
M18
2.50
0.2
0.8
20.20
24.85
29.56
11.50
0.6
26.16
27.00
M20
2.50
0.2
0.8
22.40
27.70
32.95
12.50
0.8
29.16
30.00
M22
2.50
0.2
0.8
24.40
31.95
37.29
14.00
0.8
33.00
34.00
M24
3.00
0.2
0.8
25.40
33.25
39.55
15.00
0.8
35.00
36.00
M27
3.00
0.2
0.8
30.40
38.00
45.20
17.00
1.0
40.00
41.00
M30
3.50
0.2
0.8
33.40
42.75
50.85
18.70
1.0
45.00
46.00
M33
3.50
0.2
0.8
36.40
46.55
55.37
21.00
1.0
49.00
50.00
M36
4.00
0.2
0.8
39.40
51.11
60.79
22.50
1.0
53.80
55.00
M39
4.00
0.3
1.0
42.40
55.86
66.44
25.00
1.0
58.80
60.00
M42
4.50
0.3
1.0
45.60
59.95
71.30
26.00
1.2
63.10
65.00
M45
4.50
0.3
1.0
48.60
64.70
76.95
28.00
1.2
68.10
70.00
M48
5.00
0.3
1.0
52.60
69.45
82.50
30.00
1.6
73.10
75.00
M52
5.00
0.3
1.0
56.60
74.20
88.25
33.00
1.6
78.10
80.00
M56
5.50
0.3
1.0
63.00
78.66
93.56
35.00
2.0
82.80
85.00
M60
5.50
0.3
1.0
67.00
83.41
99.21
38.00
2.0
87.80
90.00
M64
6.00
0.3
1.0
71.00
88.16
104.86
40.00
2.0
92.80
95.00



Specification for bolts and reference standards

Characteristic Standard
Material Steel
General
Requirements
International Standards ISO 8992
Thread Tolerance 6g
International Standard ISO 724, ISO 965-1
Mechanical Properties Property Classa d < 3mm: as agreed
3mm ≤ d ≤ 39mm: 8.8, 10.9 d > 39mm: as agreed
International Standards d ≤ 39mm: ISO 898-1
d < 3mm and d > 39mm: as agreed
Tolerances International Standard ISO 4759-1
Finish and/or coating As processed
Requirements for electroplating are covered in ISO 4042
Requirements for non-electrolytically applied zinc flake coatings are covered in ISO 10683
If different electroplating requirements are desired or if requirements are needed for other finishes, they should be agreed between customer and supplier.
Limits for surface discontinuities are covered in ISO 6157-1
Acceptibility For acceptance procedure, see ISO 3269.
a   For other property classes see ISO 898-1.


Mechanical and physical properties

Mechanical or physical property
Property Class
8.8
10.9
12.9
≤ M16
> M16
Tensile Strength
nom.
800
1000
1200
min.
800
830
1040
1220
Yield Strength 0.2% offset non- proportional elongation
nom.
640
640
900
1080
min.
640
660
940
1100
Percentage elongation after fracture for machined test piece
min.
12
12
9
8
Stress Under Proof Load
nom.
580
600
830
970
Rockwell Hardness, HRC
min.
22
23
32
39
max.
32
34
39
44
All units are displayed as newton per square millimeter (N/mm²)