5/8-18 Grade 8 Hex Head Cap Screws

Grade 8 Hex Cap | The Nutty Company, Inc.

5/8-18 Grade 8 Hex Head Cap Screws

5/8-18 Grade 8 hex head cap screws in SAE fine thread, yellow zinc plated and made in the USA, in lengths from 1-1/2" to 8". They take a 15/16" wrench. Partially threaded lengths have about 1-1/2" of thread.

Specifications

Size: 5/8-18 (SAE fine)
Lengths: 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2", 4", 4-1/2", 5", 6", 7", 8"
Wrench size: 15/16"
Grade: SAE J429 Grade 8, 150,000 psi min. tensile
Finish: yellow zinc plated
Made in USA

Made in North America (USA / Canada)

The length of a cap screw is measured from the under-head bearing surface to the extreme end of the screw.
(FT)=Full Thread | (PT)=Partial Thread
Thread Length on a 5/8-18 bolt is approx. 1-1/2"
Wrench Size = 15/16"

Stock Photos - to verify Thread Length, goto:

Common Uses

Suspension, steering and drivetrain work
Heavy machinery
Fine thread tapped holes

FAQ

What nut fits a 5/8-18 Grade 8 bolt?
A 5/8-18 Grade 8 fine thread hex nut or lock nut. A coarse thread 5/8" nut will not fit.

How do I know a bolt is Grade 8?
Grade 8 bolts have 6 radial lines on the head, plus the manufacturer's mark. Grade 5 has 3 lines and Grade 2 has none.

How is the length of a hex bolt measured?
From under the head to the end of the bolt. The head is not included.

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.