Description
Upgrade your fastener kit with Hex Head Cap Screws in Grade 8 steel with a plain finish and fine thread. The 5/8-18 x 1 1/4″ size (FT) is built for demanding mechanical assemblies where reliability and strength matter.
- Grade 8 steel delivers exceptional tensile strength and toughness for high-load applications.
- Plain finish indicates an uncoated steel screw, providing a versatile base for additional coatings or finishing processes as needed.
- Fine thread (5/8-18) offers precise engagement in tapped holes and improved resistance to loosening in some high-precision assemblies.
- Full thread (FT) ensures maximum threaded engagement along the entire shank for strong, even load distribution.
- Size 5/8″ diameter with a 1 1/4″ length, featuring 18 threads per inch for the specified fine-thread option.
Ideal for automotive, machinery, equipment assembly, and other heavy-duty fastening needs where a secure, durable connection is essential. Pair these screws with the corresponding nuts or tapped holes to achieve optimal performance and extended service life.
| Pieces | 25 |
|---|---|
| Measurement type | Inch |
| Thread size | 5/8-18 |
| Diameter | 5/8 |
| Length | 1-1/4 |
| Material | Steel |
| Grade | Grade 8 |
| Finish | Plain |
| Head style | Hex |
| Threads per inch | 18 |
| Thread style | Fully Threaded |
| Weight | 4.28 lb |
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State ofCalifornia to cause cancer and birth defects or other reproductive harm. For more information go tohttps://www.P65Warnings.ca.gov.

![Warranty Included [25 PKG] Hex Head Cap Screws Grade 8 Steel Plain Fine Thread 5/8-18 x 1 1/4″” (FT)](https://www.essentialtoolcorner.com/wp-content/uploads/2026/03/warranty-included-25-pkg-hex-head-cap-screws-grade-8-steel-plain-fine-thread-5-8-18-x-1-1-4-8243-vcpgbmru10640.webp)
Reviews
There are no reviews yet.