5/16"-18 x 1" Zinc Plated Grade 8 Steel Coarse Thread Hex Cap Screws
These 5/16-18 x 1 Grade 8 Coarse Hex Cap Screws are crafted from high-quality Grade 8 steel, ensuring exceptional strength and durability for demanding industrial and construction applications. Featuring a yellow zinc finish, they offer moderate corrosion resistance, making them suitable for environments where protection against rust is important. The hex head design allows for easy installation and removal using standard wrenches or sockets, while the head stamping enables quick grade identification even after installation. Ideal for securing heavy machinery, structural components, and automotive parts, these bolts provide precise threading for smooth engagement with nuts, delivering maximum holding power and reliability under stress. Whether used in manufacturing, repair, or maintenance, these hex cap screws are a dependable choice for professionals seeking performance and longevity in their fasteners.
Features
- Manufactured from Grade 8 steel for reliable strength and long‑lasting performance in demanding applications.
- Hex head with allows for easy installation and removal with standard wrenches or sockets
- Yellow Zinc finish provides moderate corrosion resistance
- Precise threading provides smooth engagement with nuts to provide maximum holding power, ensuring components remain firmly connected under stress
- Head stamping provides easy class/grade identification even after installation
Specifications
- Drive Size: 1/2" Wrench/Socket
- Subclass: H8
- Class: BL
- Length: 1"
- Thread Type: Coarse
- Nominal Size: 5/16 in.-18 x 1 in.
- Product Line: GF
- Material: Steel
- Country of Origin: China
- Thread Size: 18
- Scale: Standard
- Tariff Code: 7318.15.8066
- Retail Selling Unit Piece Count: 50
- Drive Type: Hex
- Finish: Yellow Zinc
- Diameter: 5/16"

















































