Hexagon socket set screws

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Hexagon socket set screws DIN 916

Strength 45H 스텐
Quality SCM435 STS304
Hardness 45 ~ 53 -
Remarks Black oxide a full screw / Washing
Hexagon socket set screws

Standard

제품규격및성징  
the title of screw(d) the pitch of a screw(P) dv df e s t
Max Min About Min Title Min Max Min
1 2
M3 0.5 1.4 1.15 the approximate diameter of a male screw 1.73 1.5 1.52 1.545 1.2 2
M4 0.7 2 1.75 2.30 2 2.02 2.045 1.5 2.5
M5 0.8 2.5 2.25 2.87 2.5 2.52 2.58 2 3
M6 1 3 2.75 3.44 3 3.02 3.08 2 3.5
M8 1.25 5 4.7 4.58 4 4.02 4.095 3 5
M10 1.5 6 5.7 5.72 5 5.02 5.095 4 6
M12 1.75 8 7.64 6.86 6 6.02 6.095 4.8 8
M14 2 9 8.64 6.86 6 6.02 6.095 5.6 9
M16 2 10 9.64 9.15 8 8.025 8.115 6.4 10
M18 2.5 12 11.57 11.43 8 8.025 8.115 7.2 11
M20 2.5 14 13.57 11.43 10 10.025 10.115 8 12
M22 2.5 16 15.57 13.72 10 10.025 10.115 9 13.5
M24 3 16 15.57 13.72 12 12.032 12.142 10 15

Mechanical Property

Table 1 - Display of Strength Classification Related to Vickers Hardness Test
Strength classification 14H 22H 33H 45H
Vickers Scale HVmin 140 220 330 450
Mechanical property Strength classification
14H 22H 33H 45H
Vickers Scale HV10 Min 140 220 330 450
Max 290 300 440 560
Brinell hardness HB, F=30D² Min 133 209 314 428
Max 276 285 418 532
Rockwell scale HRB Min 75 95 - -
Max 105 - - -
HRC Min - - 33 45
Max - 30 44 53
Minimum height of non-carburized screws, E Min - ½H₁ ⅔H₁ ¾H₁
Maximum height of completely decarburized area, G mm Max - 0.015 0.015 Decarburization not allowed
Surface hardness HV 0.3 Max - 320 450 580

14H, 22H and 33H are not for hex socket screws.

For strength class 22H, it is necessary to test the minimum value of HRB and the maximum value of HRC at the Rockwell hardness test.

Complete decarburization is not allowed in the case of strength class 45H.

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