
Socket Head Cap Screws — ASME B18.3 (Inch) deliver high strength with a compact cylindrical head and reliable Allen/hex key drive. A go-to choice for machine assemblies, tooling, and tight clearances.
Available in alloy steel black oxide (oil-treated, best for indoor use) and 18-8 stainless steel for corrosion resistance. Popular sizes from #4-40 through 1/2-13.
Why Choose Monster Bolts Socket Caps?
- Standards-Driven: Built to ASME B18.3 for predictable fit and torque.
- High Clamp Force: Deep socket for positive engagement and confident tightening.
- Material Options: 18-8 stainless for corrosion resistance, black oxide alloy steel for clean, precise builds.
- Consistent Quality: Clean thread form and accurate head geometry for repeatable results.
Looking for other Allen-drive styles? Try Button Head, Flat Head (82°), or Set Screws.
Questions on head height, drive size, or torque? Call (850) 764-2658 or email support@MonsterBolts.com — we’ll match the right spec to your application.