Value Collection 505-21249-708 Freight Car Bolt 7/8-9

Product Description

The VALUE COLLECTION 505-21249-708 is a heavy-duty freight car bolt engineered for high-stress fastening applications in rail and industrial equipment. Built from Grade 8 alloy steel with a plain finish, this bolt meets SAE J429 standards and uses a Unified National Coarse (UNC) thread standard. The 7/8-9 thread size and 4-inch length make it suitable for thick structural joints where tensile strength and shear resistance are critical. The flat head profile and AudiTorx drive type allow for flush or recessed installation in confined mounting surfaces. Licensed trade mechanics and industrial maintenance technicians are the primary installers of this fastener type.

This bolt is designed for use in freight car assembly, rail vehicle maintenance, and heavy industrial structural applications where Grade 8 fastener performance is required. The SAE J429 Grade 8 designation indicates a minimum tensile strength appropriate for demanding load-bearing joints. It is sold individually with a minimum order quantity of 60 pieces, making it suitable for fleet maintenance depots, rail car shops, and industrial MRO procurement.

Key Features

• Grade 8 alloy steel construction for high tensile strength in heavy-duty joints
• 7/8-9 UNC thread for reliable engagement in standard freight car hardware
• 4-inch length accommodates thick structural members and stacked components
• Flat head profile allows flush or recessed seating in mounting surfaces
• AudiTorx drive type for controlled torque application
• SAE J429 certified, plain finish, inch measurement system

Compatibility

Designed as an OEM-style replacement fastener for freight car assemblies and heavy industrial structural applications requiring Grade 8 alloy steel bolts with 7/8-9 UNC threading.

Installation Notes

Installation should be performed by qualified rail maintenance technicians or industrial mechanics familiar with SAE J429 Grade 8 fastener specifications. Always de-energize and lock out associated equipment before replacing structural fasteners. Use calibrated torque equipment appropriate for 7/8-9 fasteners and follow applicable AREMA or equipment manufacturer torque specifications. Inspect mating threads and bearing surfaces for wear or damage before installation.