Value Collection C703227 Hex Cap Screw 1/2-20 Grade 8 25pk

Product Description

The VALUE COLLECTION C703227 is a 1/2-20 hex head cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. This fastener measures 3-3/4 inches under the head and features partial threading along the shank, which provides a smooth bearing surface in clamped joints. Manufactured from Grade 8 steel to meet ASME B18.2.1 standards, it delivers the elevated tensile and proof-load ratings required in demanding service environments. The uncoated finish makes it suitable for applications where a bare steel surface is specified or where a field-applied coating will be used. Each package contains 25 screws.

This fastener is suited for general mechanical assemblies, heavy equipment maintenance, agricultural machinery, automotive fabrication, and structural connections where fine-thread engagement and high-strength steel are required. The 1/2-20 UNF thread form provides tighter thread pitch than coarse-thread equivalents, which improves resistance to loosening under vibration. Trade professionals and maintenance technicians across multiple industries rely on Grade 8 hardware in safety-critical connections.

Key Features

• Grade 8 steel construction meets elevated tensile strength requirements for heavy-duty fastening
• 1/2-20 UNF fine-thread form improves vibration resistance compared to coarse-thread equivalents
• Partial threading provides a smooth shank section for load-bearing and shear applications
• Conforms to ASME B18.2.1 dimensional standards for consistent fit and interchangeability
• Uncoated finish allows for field painting, plating, or use in dry indoor environments
• Sold in a 25-piece package for maintenance stock and small-batch jobs

Compatibility

Designed as a standard 1/2-20 UNF hex head cap screw per ASME B18.2.1, compatible with any application specifying a 1/2-20 fine-thread fastener with Grade 8 steel and partial threading.

Installation Notes

Installation is performed by mechanics, millwrights, or maintenance technicians using standard hex wrenches or impact tools sized for a 3/4-inch hex head. Always verify thread engagement depth and mating thread condition before installation. Grade 8 fasteners should be torqued with a calibrated torque wrench in accordance with the equipment manufacturer's specifications or applicable engineering standards. Never substitute a lower-grade fastener in a Grade 8 application.