Holo-krome 76264 Hex Socket Cap Screw M8 X 1.25 55mm

Product Description

The HOLO-KROME 76264 is a metric hex socket cap screw sized M8 x 1.25 with a 55 mm length under the head. Built from alloy steel and finished in black oxide, this fastener is manufactured to a 12.9 material grade, placing it among the highest strength classes available for metric socket cap screws. The partial thread profile and internal hex drive are precision-formed to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards. Machinists, millwrights, and maintenance technicians reach for this screw when high-clamp-load applications demand a reliable, surface-treated fastener in a compact head envelope.

This fastener is suited for use in mechanical assemblies, machine frames, jigs, fixtures, and industrial equipment where high tensile strength and corrosion-inhibiting surface treatment are required. The black oxide coating reduces friction and provides light corrosion resistance while maintaining tight dimensional tolerances. Partial threading allows the unthreaded shank to bear shear loads, making it a practical choice for close-tolerance through-hole applications in metal fabrication and equipment maintenance environments. This screw is sold in a package quantity of one unit with a minimum order quantity of 100 pieces.

Key Features

• 12.9 material grade alloy steel for maximum tensile strength in metric fastener applications
• Black oxide finish provides light corrosion resistance and reduces galling during installation
• Partial threading allows the smooth shank to carry shear loads in close-tolerance bores
• Internal hex drive compatible with standard metric Allen keys and hex bit drivers
• Manufactured to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 fastener standards

Compatibility

Designed as an OEM-style replacement or stock fastener for any mechanical assembly requiring an M8 x 1.25 metric socket cap screw with a 55 mm length under the head.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician using a calibrated torque wrench and the appropriate metric hex key or bit sized for M8 socket cap screws. Always de-energize and lock out equipment before servicing any assembly that requires fastener removal or replacement. Do not exceed the rated clamp load for the mating material, particularly when threading into aluminum or cast components. Follow applicable industry standards and equipment manufacturer guidelines for torque specifications.