Cross recessed(+)Truss head machine screw Small head(Coarse Stainless steel Unplated 4 X 20 Pitch 0.7

This is a female threaded component used in combination with male threaded parts such as bolts. A spanner or wrench is required for tightening.
There are four standards: Type 1, Type 2, Type 3, and Type 4, however only Types 1 through 3 are commonly available in general distribution.

Hex Nut

• Cross recessed (+) truss head machine screw small head coarse pitch
• Nominal diameter (d) M4
• Length under head (ℓ) 20.0
• Pitch (P) 0.7
• Cross recess number 2
• Head diameter (dk) Nominal 8.1 Tolerance 0,-0.5
• Head height (k) Nominal 2.2 Tolerance ±0.15
• Cross recess (m) Reference 4.0
• Cross recess depth (q) Max 1.83 Min 1.30