Value Collection 451278BR Hex Head Cap Screw 3/4-16 X 16 in

Product Description

The VALUE COLLECTION 451278BR is a heavy-duty hex head cap screw designed for high-strength bolted assemblies in mechanical, industrial, and construction applications. This fastener is manufactured from Grade 8 steel and features a bright, uncoated finish. The screw measures 3/4-16 thread size with a 16-inch length under the head and is partially threaded, making it well suited for applications where the shank must pass through a clearance hole before engaging a tapped bore or nut. It conforms to ASME B18.2.1 dimensional standards and weighs approximately 2 pounds. The 1-1/8-inch hex drive size accommodates standard combination and impact wrenches used in trade and industrial service.

This cap screw is used in heavy equipment assembly, structural steel connections, machinery fabrication, and general industrial maintenance where high tensile strength and reliable torque retention are required. The Grade 8 rating indicates a minimum tensile strength of 150,000 psi, making it appropriate for demanding load-bearing joints. Partial threading preserves a smooth shank section that resists shear loads and allows for precise clamping without galling a mating tapped hole. It is sold as a single piece with no minimum order restriction beyond one unit.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding applications
• Partial threading allows shank section to carry shear loads and provides clean clamping behavior
• Bright, uncoated finish for bare steel appearance and standard dimensional tolerances
• Conforms to ASME B18.2.1 dimensional and tolerance standards
• Unified National Fine (UNF) thread form at 3/4-16 for positive engagement and vibration resistance
• 1-1/8-inch hex drive accommodates standard impact and torque wrenches

Compatibility

Designed as an OEM-style replacement or maintenance fastener for heavy industrial equipment, structural assemblies, and machinery requiring 3/4-16 UNF Grade 8 hex head cap screws conforming to ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic or industrial maintenance technician using a calibrated torque wrench and a 1-1/8-inch socket. De-energize and lock out all equipment before replacing fasteners in powered assemblies. Inspect mating threads and seating surfaces for damage or debris before installation. Do not exceed manufacturer-specified torque values for the joint design — consult applicable engineering references for Grade 8 UNF torque tables.