Value Collection MP99151 Hex Cap Screw 5/8-11 X 2.5 in Grade 8

Product Description

The VALUE COLLECTION MP99151 is a 5/8-11 hex head cap screw designed for high-strength fastening applications across mechanical, structural, and industrial assembly work. It measures 2.5 inches under the head with a partially threaded shank, conforming to ASME B18.2.1 dimensional standards. Manufactured from Grade 8 steel, this fastener delivers a minimum tensile strength rating appropriate for heavy-duty bolted joints. The uncoated finish makes it suitable for applications where a secondary coating or plating will be applied on-site, or where bare steel is specified. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener type.

This screw is used in general industrial maintenance, OEM equipment assembly, and structural bolting where inch-series UNC thread fasteners are required. The 5/8-11 UNC thread form is one of the most common coarse-thread sizes in North American trade work, making this a standard replacement or stock fastener for shop and field use. It is sold in a package quantity of 10 units, which suits both single-repair and small-batch assembly needs.

Key Features

• Grade 8 steel construction for high tensile and proof load requirements
• 5/8-11 UNC coarse thread form, inch-series
• 2.5 inch length measured under the head
• Partially threaded shank for clamping force in bolted joints
• Conforms to ASME B18.2.1 dimensional standard
• Uncoated finish, ready for field coating or bare-steel applications

Compatibility

Designed as a standard inch-series UNC replacement hex head cap screw for use in any application specifying a 5/8-11 x 2.5 inch Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician using the appropriate socket or open-end wrench for a 5/8-inch hex fastener. Always consult the equipment manufacturer's torque specifications before final tightening. Ensure mating threads are clean and free of debris before installation. For structural applications, verify that the fastener grade matches the design specification before use.