Holo-krome 76591 M30 X 3.50 Hex Socket Cap Screw 200mm

Product Description

The HOLO-KROME 76591 is a metric hex socket cap screw engineered for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features an M30 x 3.50 thread and a 200 mm length under head, providing substantial clamping force in heavy-duty joints. Manufactured from alloy steel to a 12.9 material grade, this fastener delivers tensile strength suitable for demanding load conditions. A black oxide finish provides moderate corrosion resistance and a uniform matte appearance. The internal hex drive allows precise torque application with a standard hex key or socket tool.

This cap screw is used in heavy equipment manufacturing, hydraulic assemblies, machine tool construction, and large structural frameworks where high-clamp-load fasteners are required. The M30 thread diameter and 200 mm body length suit applications involving thick flanges, heavy brackets, or deep blind holes. It is typically installed by machinists, millwrights, and mechanical technicians working to engineered torque specifications.

Key Features

• M30 x 3.50 metric thread for heavy-duty clamping applications
• 200 mm length under head accommodates thick material stacks
• Alloy steel construction at 12.9 material grade for high tensile and proof load ratings
• Black oxide coating provides mild corrosion resistance and reduced light reflection
• Internal hex socket drive enables precise torque control in confined spaces
• Meets ANSI B1.13M, ISO 4762, and ISO 898-1 fastener standards

Compatibility

Designed as a direct-fit metric hex socket cap screw for any application requiring an M30 x 3.50 thread pitch, 200 mm under-head length, and 12.9 alloy steel grade per ISO 4762.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician using a calibrated torque wrench and the appropriate hex key or socket matching the M30 cap screw drive size. Always de-energize or lock out the equipment before fastener replacement per applicable OSHA lockout/tagout procedures. Apply thread lubricant or anti-seize only if specified by the engineering design, as lubrication affects the torque-tension relationship. Discard any fastener showing thread damage, corrosion, or deformation.