(-)Flat head machine screw(Coarse Stainless steel Unplated 1.4 X 2.0

The head of a round machine screw is nearly hemispherical in shape, similar to today's truss head machine screw. The flat head machine screw has a low-profile cylindrical head. It was commonly manufactured in the past due to its simple production method.
Machine Screw Head Dimensions List　Encyclopedia of Round & Flat Head Machine Screws

• Slotted (-) flat head machine screw Coarse pitch
• Nominal thread diameter (d) M1.4
• Length under head (ℓ) 2.0
• Pitch (P) 0.3
• Head diameter (dk) Nominal 2.6 Tolerance 0,-0.4
• Head height (k) Nominal 0.9 Tolerance ±0.1
• Slot width (n) Reference 0.32
• Slot depth (t) Reference 0.5
• *M1.4 is available in stainless steel only.