Holo-krome 76548 Hex Socket Cap Screw M24 X 3.00 Alloy Steel

Product Description

The HOLO-KROME 76548 is a metric hex socket cap screw sized M24 x 3.00 with a 60 mm length under the head. It is manufactured from alloy steel to material grade 12.9, one of the highest strength classifications available for metric fasteners, and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection. The fully threaded shank engages the full usable length of the mating thread. Drive engagement is through an internal hex socket, requiring a hex key or socket driver. This fastener is used in high-load mechanical and structural assemblies by machinists, millwrights, and industrial maintenance technicians.

The 76548 is suited for demanding industrial and commercial applications where high clamping force and precise torque control are required. Fully threaded M24 cap screws at this strength grade are commonly found in heavy machinery, structural steel fabrication, tooling fixtures, and equipment frames. The black oxide finish makes this screw a practical choice for indoor mechanical assemblies where moderate surface protection is acceptable. It conforms to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards, making it interchangeable with other compliant M24 x 3.00 socket head cap screws in those specifications.

Key Features

• Grade 12.9 alloy steel construction for maximum tensile and proof load capacity
• Fully threaded shank maximizes thread engagement across the full 60 mm length under head
• Internal hex socket drive for high-torque installation with standard hex keys or socket drivers
• Black oxide finish for moderate corrosion resistance and surface protection
• Meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards

Compatibility

Designed as a standard metric replacement or new-installation fastener compatible with any M24 x 3.00 tapped hole conforming to DIN 912 or ISO 4762 socket head cap screw specifications.

Installation Notes

Installation should be performed by a qualified millwright, machinist, or maintenance technician familiar with metric fastener torque requirements for grade 12.9 hardware. Always ensure the mating tapped hole is clean, undamaged, and to the correct M24 x 3.00 thread specification before installation. Use a calibrated torque wrench and the appropriate hex socket or hex key to achieve the correct clamp load without exceeding the fastener's proof load. Do not substitute thread lubricants or anti-seize compounds without recalculating the required torque value per applicable engineering standards.