Bulk M4 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide

Monster Overview:

Equip your assemblies with M4 Socket Head Cap Screws from Monster Bolts — engineered for precision, strength, and durability. Crafted from Class 12.9 alloy steel and finished with a thermal black oxide coating, these fasteners provide high tensile strength and a professional, low-glare appearance. The deep internal hex drive ensures secure torque application and repeatable tightening in mechanical, electronic, and industrial applications.

Quality & Supply: Each lot meets or exceeds Monster Bolts’ strict dimensional and finish standards. Designed for production and OEM use, our bulk SHCS are available in a wide range of sizes and shipped fast from U.S. inventory.

Monster Features:

• High Strength: Class 12.9 alloy steel delivers maximum tensile and clamping performance.
• Precision Drive: 3.0 mm hex socket provides firm tool engagement for consistent torque control.
• Socket Cap Design: Cylindrical head offers high preload and space-efficient fastening.
• Thermal Black Oxide: Low-gloss, lightly oiled finish resists mild corrosion; fully RoHS compliant.
• Standards: Produced to DIN 912 / ISO 4762 for guaranteed fit and interchangeability.

Monster Specifications

More Monster Bolts:

• M3 Hex Keys
• Matching M4 Nuts & Washers
• All Bulk Metric Socket Cap Screws

Order Today and Experience the Monster Bolts Difference

Buy with confidence — every Monster Bolts bulk order is backed by our strict quality standards, quick U.S. fulfillment, and responsive customer service. MTRs available on request for unopened bulk cartons.