3/8-16 Grade 8 Hex Head Cap Screws

Grade 8 Hex Cap | The Nutty Company, Inc.

3/8-16 Grade 8 Hex Head Cap Screws

3/8-16 Grade 8 hex head cap screws, USS coarse thread, in lengths from 3/4" to 8". Available yellow zinc plated, made in the USA. They take a 9/16" wrench. Partially threaded lengths have about 1" of thread (longer on bolts over 6").

Specifications

Size: 3/8-16 (USS coarse)
Lengths: 3/4", 1", 1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 3", 3-1/2", 4", 4-1/2", 5", 5-1/2", 6", 7", 8"
Wrench size: 9/16"
Grade: SAE J429 Grade 8, 6 radial lines on the head
Strength: 150,000 psi min. tensile, 130,000 psi min. yield
Finish: yellow zinc plated
Origin: 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 3/8-16 bolt is approx. 1"
Wrench Size = 9/16"

Stock Photos - to verify Thread Length, goto:

Common Uses

Heavy equipment and machinery
Truck, trailer and suspension work
High load and high vibration joints

FAQ

What nut fits a 3/8-16 Grade 8 bolt?
A 3/8-16 Grade 8 hex nut, or a Grade 8 / Grade C lock nut in the same coarse thread. Add a hardened 3/8" flat washer under the nut.

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.

Full thread or partial thread?
Short lengths are fully threaded (FT). Longer lengths are partially threaded (PT), with a smooth shank under the head. Thread length on a partially threaded bolt is about twice the diameter plus 1/4" for lengths up to 6", and twice the diameter plus 1/2" for longer lengths.

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.