Holo-krome 76579 Hex Socket Cap Screw M24 X 3.00 200mm

Product Description

The HOLO-KROME 76579 is a metric hex socket cap screw designed for high-strength fastening applications in industrial and mechanical assemblies. Manufactured from alloy steel to material grade 12.9, this screw delivers exceptional tensile strength and is finished with a black oxide coating for moderate corrosion resistance. The M24 x 3.00 thread size paired with a 200 mm length under head makes it well-suited for heavy-duty bolted connections where precision and clamping force are critical. It is partially threaded, conforming to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards. Installation is performed with a hex socket drive tool.

This screw is used in demanding mechanical, structural, and industrial assembly applications requiring grade 12.9 alloy steel fasteners. Typical install scenarios include machine bases, heavy equipment frames, die sets, fixtures, and other assemblies where high preload and reliable clamping are required. The black oxide finish is suited for interior or protected environments where light rust inhibition is acceptable. Machinists, millwrights, and industrial maintenance technicians are the primary installers of this fastener size and grade.

Key Features

• Grade 12.9 alloy steel construction for maximum tensile and proof load strength
• Black oxide finish provides light corrosion resistance and reduces light glare on exposed hardware
• Partially threaded shank allows for precise shear-load transfer in bolted joints
• Hex socket drive type for high-torque installation in confined or recessed spaces
• Meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards for metric fastener compliance
• M24 x 3.00 thread pitch conforms to standard metric coarse thread series

Compatibility

Designed as a standard DIN 912 and ISO 4762 metric socket cap screw suitable for any M24 x 3.00 tapped hole application requiring a grade 12.9 partially threaded fastener.

Installation Notes

Installation requires a properly sized hex socket key or socket drive tool matched to the M24 cap screw drive. De-energize and lock out any machinery before fastener installation or removal per OSHA lockout-tagout requirements. Apply thread lubricant or fastener-grade anti-seize as appropriate for the joint design before torquing to the engineer-specified value. Do not substitute a lower-grade fastener in any joint designed for grade 12.9 hardware.