Holo-krome 76590 Hex Socket Cap Screw M30 X 3.50 180mm

Product Description

The HOLO-KROME 76590 is a metric hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features an M30 x 3.50 thread and a 180 mm length under head, which converts to approximately 7.087 inches. The fastener is manufactured from alloy steel to material grade 12.9, the highest standard class for metric cap screws, and is finished with a black oxide coating that provides moderate corrosion resistance and a low-reflective appearance. Installation requires a hex key or Allen-style driver. This screw is suited for professionals and machinists working in demanding load environments where tensile and shear strength are critical.

This hex socket cap screw is used across a wide range of industrial applications including heavy equipment assembly, tooling fixtures, machine frames, hydraulic component mounting, and structural connections. The M30 size and grade 12.9 rating make it appropriate for high-load bolted joints where a recessed drive is preferred for clearance or torque control. It is sold individually with a minimum order quantity of one unit per order.

Key Features

• M30 x 3.50 metric thread for compatibility with standard metric tapped holes
• 180 mm (approximately 7.087 inches) length under head for deep engagement in thick materials
• Alloy steel construction with grade 12.9 rating for maximum tensile strength
• Black oxide finish for moderate corrosion resistance and reduced surface reflectivity
• Hex socket drive type for high torque transfer with minimal driver slip
• Meets ANSI B1.13M, ISO 4762, and ISO 898-1 fastener standards

Compatibility

Designed as a standard metric hex socket cap screw for use in any application requiring an M30 x 3.50 thread with a 180 mm grip length under head in alloy steel grade 12.9.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and a properly sized hex key socket. Always confirm the mating tapped hole thread class and material are rated for grade 12.9 fastener loads before final assembly. De-energize and lock out any equipment before fastener replacement or removal. Do not reuse fasteners that show signs of thread damage, corrosion, or deformation.