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(Non-preferred) dimensions in parentheses.

Hexagon Socket Set Screws With Cone Point

GB 78 - 1985

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国标GB 78 - 1985 GB78 78GB Hexagon Socket Set Screws With Cone Point

 *Models with different eras.

Screw Thread
d
M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16 M20 M24
P Pitch
dt max
s Nominal Size
max
min
t min 1
2
L0 Nominal Size
0.35 0.4 0.45 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2.5 3
- - - - - - 1.5 2 2.5 3 4 5 6
0.7 0.9 1.3 1.5 2 2.5 3 4 5 6 8 10 12
0.724 0.902 1.295 1.545 2.045 2.56 3.08 4.095 5.095 6.095 8.115 10.115 12.142
0.711 0.889 1.27 1.52 2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025 12.032
0.7 0.8 1.2 1.2 1.5 2 2 3 4 4.8 6.4 8 10
1.5 1.7 2 2 2.5 3 3.5 5 6 8 10 12 15
2.5 2.5 3 3 4 5 6 8 10 12 16 20 25
①,When L ≤ L0, it is a short screw; When L>L0, it is a long screw.

Suppliers

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Ningbo Zhenhai Fumei Set Screw Factory
  • Manager Xie

  • +86-13586889678

  • +86-574-86582963、86572963

  • Material: 304, 316, 316L, copper, alloy steel, carbon steel; Nominal diameter: M2.5-M20, length: 3-150mm; Surface treatment: chrome / silver plated, black zinc plated

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