Holo-Krome 76364 M12-1.75 x 30mm Socket Head Cap Screw Alloy Steel Class 12.9 Black Oxide (Pack of 100)

The Holo-Krome 76364 is a M12-1.75 x 30mm Socket Head Cap Screw manufactured from alloy steel with a black oxide finish, rated to Class 12.9 — the highest standard strength grade for metric fasteners. Sold in a convenient pack of 100, these precision-engineered socket head cap screws are manufactured in Wallingford, Connecticut and built to exacting dimensional and material standards.

Key Features:

• Thread Size: M12 x 1.75 (coarse metric thread)
• Length Under Head: 30mm
• Material: Alloy steel, quenched and tempered, with black oxide finish
• Strength Class: Class 12.9 — minimum tensile strength of 1,220 N/mm² (MPa)
• Drive Type: Internal hex socket (Allen/hex key drive)
• Standards: ISO metric threads to ANSI B1.13M, ISO 4762 & ISO 898-1
• Thermo-Forging®: Proprietary forging process preserves continuous, uncut metal fibers for 15–20% greater fatigue resistance versus conventional screws
• Precision Threads: Smooth, burnished threads for superior uniformity and accuracy
• Holo-Code Traceability: Lot traceability number stamped directly on each socket head for identification without the original packaging
• Diameter & Pitch Markings: Clearly marked on each individual screw
• Fillet Control: Closely controlled fillet between head and body maximizes fatigue strength
• Pack Quantity: 100 pieces per pack

Socket head cap screws deliver superior tensile strength compared to equivalent hex head cap screws, while requiring less surface area for counterboring. The internal hex socket drive provides a close, secure fit that reduces the risk of cam-out or driving tool slippage. These fasteners are ideal for precision assembly applications requiring close tolerances and a clean, professional appearance — including machine building, tooling, robotics, aerospace, and industrial equipment manufacturing.