Socket Head Cap Screws - (Inch / Allen)

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:root { --ink:#333; --brand:#00429a; --bg:#f7f9fc; --chip:#eef5fa; } body{font-family:Arial, sans-serif; color:var(--ink); line-height:1.6;} h1,h2,h3{color:var(--brand);} .lede{background:var(--bg); border:1px solid #e5edf7; padding:16px; border-radius:12px; margin-bottom:20px;} a{color:#0066cc; text-decoration:none;} a:hover{text-decoration:underline;} ul{margin-left:1.2rem;} .meta{display:flex; gap:8px; flex-wrap:wrap; margin:.25rem 0 .5rem;} .badge{display:inline-block; background:var(--chip); border:1px solid #e5edf7; color:#00429a; padding:2px 8px; border-radius:999px; font-size:12px;} 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 . ASME B18.3 Allen / Hex Drive Alloy Steel Black Oxide 18-8 Stainless 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.