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Click Specification

(Non-preferred) dimensions in parentheses.

Flat head welding screws

JIS B 1195 - 1994

Display drawing:

日标JIS B1195 - 1994 JIS1195 1195JIS Flat head welding screws
Thread Size
d
M4 M5 M6 M8 M10 M12
P Pitch Coarse thread
Fine thread
dk Nominal Size
max
min
k Nominal Size
max
min
d1 Nominal Size
max
min
h Nominal Size
max
min
d0 max
r
0.7 0.8 1 1.25 1.5 1.75
/ / / 1 1.25 1.25
10 12 14 18 22 26
10.4 12.4 14.4 18.4 22.4 26.4
9.6 11.6 13.6 17.6 21.6 25.6
1.3 1.8 2 2.5 3.5 4.5
1.5 2 2.2 2.7 3.7 4.7
1.1 1.6 1.8 2.3 3.3 4.3
1.5 2 2.5 3 4 4
1.75 2.25 2.75 3.25 4.25 4.25
1.25 1.75 2.25 2.75 3.75 3.75
0.7 0.7 0.8 0.8 1 1
0.8 0.8 0.9 0.9 1.1 1.1
0.6 0.6 0.7 0.7 0.9 0.9
8.5 10 11.5 15 18 21
0.2~0.5 0.2~0.6 0.25~0.7 0.4~0.9 0.4~1.2 0.6~1.4
①,a≤4P
②,    The shape of screw end shall be as rolled end for bolts with nominal screw thread of M8 or less and chamfered end or flat point for those with nominal screw thread of M10 or more. The as·rolled end shall ensure good leading into internal screw thread.

    When chamfered end or flat point is required for bolt with nominal screw thread of M8 or less, it shall be specified by the purchaser.

Alternative history

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  • Material: Carbon steel, Stainless steel; Grade: 8.8; Specifications: M2-M12