Holo-krome 76556 Hex Socket Cap Screw M24 X 3.00 70mm

Product Description

The HOLO-KROME 76556 is a metric hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at M24 x 3.00 with a 70 mm length under head, this fastener is fully threaded and driven by a hex (Allen) socket. It is manufactured from alloy steel at material grade 12.9, making it one of the strongest fastener grades available. The black oxide finish provides mild corrosion resistance and reduces light reflection on the fastener head. This screw meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards, confirming dimensional and mechanical compliance for precision installations.

This fastener is suited for heavy-duty bolted connections in manufacturing equipment, hydraulic systems, machine tool assemblies, and structural fixtures where high clamp load and tensile strength are required. Grade 12.9 alloy steel cap screws at this size are commonly installed by machinists, millwrights, and maintenance technicians working on industrial machinery, presses, and fabricated steel assemblies. The fully threaded design provides consistent thread engagement across the full length of the fastener shank.

Key Features

• M24 x 3.00 thread size with 70 mm length under head, fully threaded
• Grade 12.9 alloy steel construction for maximum tensile and proof load strength
• Black oxide coating for mild corrosion resistance and a low-reflectance finish
• Hex socket drive for high-torque installation in confined or recessed locations
• Meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 fastener standards

Compatibility

Designed as a standard M24 x 3.00 metric hex socket cap screw conforming to DIN 912 and ISO 4762 dimensional specifications, suitable for any tapped hole or threaded assembly calling for this metric size and thread pitch.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a calibrated torque wrench and the appropriate metric hex key or socket driver. Always verify that the mating tapped hole thread class and material are compatible with a grade 12.9 fastener before installation. De-energize, depressurize, or lock out any equipment per OSHA lockout/tagout procedures before replacing or installing fasteners in active machinery. Do not substitute lower-grade fasteners in applications specified for grade 12.9.