Value Collection 451052BR Hex Cap Screw 1-1/4-12 X 9 in Grade 8

Product Description

The VALUE COLLECTION 451052BR is a heavy-duty hex head cap screw designed for high-load fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a bright uncoated finish, this screw delivers exceptional tensile strength suitable for demanding bolted connections. The fastener measures 1-1/4-12 thread size with a 9-inch length under the head and features partial threading along the shank. It conforms to ASME B18.2.1 standards, making it a reliable choice for precision-fit applications where dimensional consistency is required. Licensed tradespeople and maintenance professionals working with heavy equipment, machinery mounts, or structural steel will find this fastener appropriate for their applications.

This hex head cap screw is suited for use in industrial maintenance, equipment assembly, and structural bolting scenarios where high clamping force and shear resistance are required. The UNF thread standard and partial threading make it appropriate for applications where a strong unthreaded shank section is needed to resist lateral loads or provide a precision fit through clearance holes. It is commonly installed by millwrights, pipefitters, and maintenance mechanics working on heavy machinery and structural frames.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• Partial threading along the shank allows the unthreaded section to bear shear loads and fit precisely through clearance holes
• UNF 1-1/4-12 thread specification ensures fine-thread engagement for secure clamping in high-vibration environments
• Bright uncoated finish suitable for use in dry indoor environments or where post-installation coatings will be applied
• Conforms to ASME B18.2.1 dimensional standards for consistent fitment and interchangeability
• 1-7/8-inch hex key size compatible with standard industrial wrenches and impact tooling

Compatibility

Designed as an OEM-style replacement or standard fastener for industrial bolted assemblies requiring a 1-1/4-12 UNF, Grade 8, partially threaded hex head cap screw per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using a properly sized 1-7/8-inch wrench or impact socket. Always de-energize and lock out equipment before replacing or installing fasteners in mechanical assemblies. Follow applicable torque specifications from the equipment manufacturer or relevant structural codes — do not estimate torque values without a reference specification. Use a calibrated torque wrench for critical joints to ensure proper clamp load without overloading the fastener.