Truss Head Shape and Dimensions = Standard JIS

Technical Data

Screw diameter Machine screw Thread Pitch No. of Phillips recess a Head Diameter size a Tolerance b Head Thickness size b Tolerance
M2 0.4 1 4.5 + 0 - 0.4 1.2 + /- 0.1
( M2.2 ) 0.45 1 5 + 0 - 0.4 1.3 + /- 0.1
( M2.3 ) 0.45 1 5.2 + 0 - 0.4 1.4 + /- 0.1
M2.5 0.45 1 5.7 + 0 - 0.4 1.5 + /- 0.1
M3 0.5 2 6.9 + 0 - 0.5 1.9 + / - 0.15
( M3.5 ) 0.6 2 8.1 + 0 - 0.5 2.2 + / - 0.15
M4 0.7 2 9.4 + 0 - 0.5 2.5 + / - 0.15
( M4.5 ) 0.75 2 10.6 + 0 - 0.6 2.8 + / - 0.15
M5 0.8 2 11.8 + 0 - 0.6 3.1 + / - 0.15
M6 1.0 3 14 + 0 - 0.7 3.7 + / - 0.2
M8 1.25 3 17.8 + 0 - 0.8 4.8 1.88

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