5/16"-18 x 4-1/2" Zinc Plated Grade 5 Steel Coarse Thread Hex Cap Screws
These 5/16-18 x 4-1/2 Grade 5 Coarse Hex Cap Screws are crafted from Grade 5 steel, delivering reliable strength and long-lasting performance in demanding applications. Featuring a zinc finish, they offer moderate corrosion resistance, making them suitable for a variety of environments. The hex head design ensures easy installation and removal using standard wrenches or sockets, while the head stamping allows for quick class and grade identification even after installation. Ideal for industrial, automotive, and construction use, these bolts provide precise threading for smooth engagement and maximum holding power, ensuring components remain securely connected under stress. Whether you are assembling machinery, structural frameworks, or equipment, these Grade 5 hex cap screws offer durability and dependable performance to meet your fastening needs.
Features
- Precise threading provides smooth engagement and maximum holding power, ensuring components remain firmly connected under stress
- Head stamping provides easy class/grade identification even after installation
- Zinc finish provides moderate corrosion resistance
- Manufactured from Grade 5 steel for reliable strength and long‑lasting performance in demanding applications.
- Hex head design allows for easy installation and removal with standard wrenches or sockets
Specifications
- Product Line: GF
- Thread Type: Coarse
- Nominal Size: 5/16 in.-18 x 4-1/2 in.
- Retail Selling Unit Piece Count: 50
- Scale: Standard
- Finish: Zinc
- Country of Origin: Thailand
- Diameter: 5/16"
- Drive Size: 1/2" Wrench/Socket
- Class: BL
- Subclass: H5
- Length: 4-1/2"
- Drive Type: Hex
- Material: Steel
- Tariff Code: 7318.15.8066
- Thread Size: 18

















































