Monster Overview: Dependable, compact, and built for performance — Bulk #2-56 Button Head Socket Cap Screws from Monster Bolts deliver high-strength fastening in a small form factor. Made from premium alloy steel and finished with a thermal black oxide + oil coating, these screws offer exceptional strength with a sleek, professional appearance and mild oxidation resistance. Each screw conforms to ASME B18.3 and IFI-111 dimensional standards and is manufactured from ASTM A574 alloy steel for a tensile strength of approximately 180,000 psi. All Monster Bolts black oxide socket fasteners are fully RoHS compliant and ship directly from our U.S. warehouse for fast, reliable delivery. Key Features: High Strength: ASTM A574 alloy steel delivers 180,000 psi tensile and 162,000 psi yield strength for diameters ≤ 1/2". Low-Profile Design: Rounded button head provides smooth finishes and minimizes snagging or interference. Drive: Uses a standard 0.050" hex key for easy installation and precision torque. Available here if you need a fresh one! Finish: Thermal black oxide with light oil treatment enhances appearance and provides mild corrosion resistance. Compliance: Meets ASME B18.3 / IFI-111 standards; material conforms to ASTM A574; fully RoHS compliant. Monster Specifications: Specification Detail Diameter / Thread Size #2-56 (UNC – Unified Coarse Thread) Drive Size 0.050" Hex Key (Allen Wrench) Material Alloy Steel per ASTM A574 (≈ Class 12.9 Equivalent) Finish Thermal Black Oxide + Oil Tensile Strength 180,000 psi (≤ 1/2" Diameter) Yield Strength 162,000 psi (≤ 1/2" Diameter) Hardness Rockwell C39 Minimum Standards ASME B18.3 / IFI-111 / ASTM A574 RoHS Compliance Yes – Black Oxide Finish Measurement Note: For button head socket cap screws, overall length is measured from under the head to the tip of the screw. Matching Products: Matching Nuts: Pair with compatible #2-56 nuts from our Bulk U.S. Nuts Collection. Matching Washers: Use with flat and lock washers from our Bulk U.S. Washers Collection. Hex Key: Uses a 0.050" hex key – Available here. Order with Confidence: Every Monster Bolts bulk order ships fast from our U.S. warehouse and is backed by our commitment to precision, consistency, and quality. Trusted by manufacturers, technicians, and builders across the U.S.
