Flat Head Socket Cap Screws are fully countersunk to sit flush with the surface—ideal where clearance and clean lines matter (machinery, die fixturing, removable panels).
Need US / Inch sizes? We carry those too.
Related Socket Screw Styles
- Socket Head Cap Screws – strongest clamping force in the socket family.
- Button Head Screws – low-profile, snag-resistant dome head.
Why Choose Monster Bolts Flat Heads?
- Flush Fit: Countersunk design for smooth, snag-free surfaces.
- Strong & Precise: 12.9 alloy steel available for demanding assemblies.
- Corrosion Options: A2 (304) and A4 (316) stainless for harsh environments.
- Allen (Hex) Drive: Reliable torque transfer and easy serviceability.
M4 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide
Sale priceFrom $1.28
M4 Flat Head Socket Cap screws, Stainless Steel A2 (18-8)
Sale priceFrom $0.94
M4 Marine Grade Flat Head Socket Cap screws, Stainless Steel A4 (316)
Sale priceFrom $1.03
M4 Titanium Flat Head Socket Cap screws, DIN 7991
Sale priceFrom $3.88