Description
Hex Head Cap Screws Grade 8 Steel – Plain Finish, Fine Thread 5/8-18 x 4 in (PT) deliver reliable, high-strength performance for demanding assemblies. Crafted from Grade 8 steel, these hex screws provide excellent tensile strength and durability, making them ideal for heavy-duty equipment, machinery, and automotive applications. The plain finish indicates an uncoated, robust steel fastener designed for dry or indoor environments where maximum strength is required.
Designed for precision and secure clamping, the fine thread on these screws offers superior engagement and resistance to loosening under vibration. The 5/8-18 thread size and 4 inch length accommodate a wide range of applications, pairing well with standard nuts and tapped holes sized to 5/8-18.
- Head style: Hex Head Cap Screws
- Material / Grade: Grade 8 steel
- Finish: Plain (uncoated)
- Thread type: Fine
- Thread size: 5/8-18
- Length: 4 inches
- Designation: (PT) included in the product title
Specifications
- Head: Hex
- Grade: 8
- Material: Steel
- Finish: Plain
- Thread: Fine
- Thread size: 5/8-18
- Length: 4 in
Applications
Ideal for automotive, manufacturing, and machinery assemblies where high-strength fasteners are essential. Use with compatible nuts, washers, and tapped holes sized to 5/8-18, and apply proper torque to ensure secure, lasting performance.
Why choose Grade 8 steel hex screws?
Grade 8 steel offers superior tensile strength and durability for heavy-duty equipment. The fine thread provides excellent holding power and precision, making these screws a dependable choice for high-stress applications that demand reliable clamping and long service life.
Add to cart to secure your project with premium Grade 8 hex head cap screws.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324