5/8"-18 x 1-1/4" Zinc Plated Grade 8 Steel Fine Thread Hex Cap Screws
These 5/8-18 x 1-1/4 Grade 8 Fine Hex Cap Screws are precision-engineered bolts manufactured from high-strength Grade 8 steel, ensuring exceptional durability and long-lasting performance in demanding applications. Featuring a yellow zinc finish for corrosion resistance, these bolts come with a hex head integrated with a washer for easy installation and removal using standard wrenches or sockets, while providing enhanced holding power. Designed with fine threading, these bolts offer superior strength in both tension and shear, and are highly resistant to loosening caused by vibration, making them ideal for use in automotive, industrial, and heavy machinery applications. The head stamping allows for quick and easy identification of the bolt’s grade, even after installation, ensuring reliability and safety in critical assemblies. Perfect for professionals and DIY enthusiasts alike, these Grade 8 fine hex cap screws deliver dependable performance where strength and precision are paramount. Whether you’re working on structural projects, equipment repair, or manufacturing, these bolts provide the secure fastening solution you need.
Features
- 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.
- 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
Specifications
- Nominal Size: 5/8 in.-18 x 1-1/4 in.
- Drive Type: Hex
- Country of Origin: China
- Thread Type: Fine
- Scale: Standard
- Subclass: H8
- Thread Size: 18
- Class: BL
- Finish: Yellow Zinc
- Tariff Code: 7318.15.8066
- Length: 1-1/4"
- Drive Size: 15/16" Wrench/Socket
- Product Line: GF
- Retail Selling Unit Piece Count: 10
- Material: Steel
- Diameter: 5/8"