5/8"-18 x 2-1/2" Zinc Plated Grade 8 Steel Fine Thread Hex Cap Screws
These 5/8-18 x 2-1/2 Grade 8 Fine Hex Cap Screws are precision-engineered from Grade 8 steel to deliver exceptional strength and durability for demanding industrial and construction applications. Featuring a yellow zinc finish, these bolts resist corrosion while providing a professional appearance. The hex head with an integrated washer ensures easy installation and removal using standard wrenches or sockets, enhancing efficiency on the job. Designed with fine threading, these bolts offer superior tension and shear strength compared to coarse threads, while also resisting loosening caused by vibration. The clear head stamping allows for quick class and grade identification even after installation, making them ideal for heavy-duty machinery, structural connections, and automotive assemblies where reliable fastening is critical. Perfect for professionals and DIY enthusiasts alike, these bolts provide maximum holding power and long-lasting performance in a variety of scenarios. Whether used in manufacturing, maintenance, or construction, they ensure components remain securely connected under stress, making them a trusted choice for high-strength fastening needs.
Features
- Hex head with integrated washer allows for easy installation and removal with standard wrenches or sockets and improved holding power
- Fine thread bolts provide more strength in tension and shear and resist loosening from vibration better than coarse thread bolts
- 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
- Manufactured from Grade 8 steel for reliable strength and long‑lasting performance in demanding applications.
Specifications
- Class: MR
- Retail Selling Unit Piece Count: 4
- Thread Size: 18
- Drive Type: Hex
- Finish: Yellow Zinc
- Nominal Size: 5/8 in.-18 x 2-1/2 in.
- Drive Size: 15/16" Wrench/Socket
- Scale: Standard
- Tariff Code: 7318.15.8066
- Length: 2-1/2"
- Thread Type: Fine
- Country of Origin: Thailand
- Subclass: CP
- Diameter: 5/8"
- Product Line: GF
- Material: Steel