5/16-18 x 1-1/4 Grade 8 Coarse Hex Flange Bolts

These 5/16-18 x 1-1/4 Grade 8 Coarse Hex Flange Bolts are engineered from high-quality Grade 8 steel, ensuring exceptional strength and durability for demanding industrial and construction applications. Featuring a yellow zinc finish, these bolts offer moderate corrosion resistance, making them suitable for environments where protection against rust is important. The hex head with an integrated washer design allows for easy installation and removal using standard wrenches or sockets, while also enhancing holding power.

Designed with precise threading, these bolts provide smooth engagement with nuts to maintain a secure and reliable connection under stress. The clear head stamping enables quick identification of the bolt’s class and grade even after installation, streamlining maintenance and inspection processes. Ideal for use in automotive, heavy machinery, structural, and general manufacturing settings, these bolts deliver dependable performance where strength and reliability are critical.

As part of the DecorMaster™ Bolts family, these fasteners combine professional-grade materials and thoughtful design to meet the needs of both industrial professionals and DIY enthusiasts seeking high-quality fastening solutions.