Stainless Steel Hex Bolt Hex Head Bolt

Product Description

Stainless steel hex bolts are the industry standard for versatile, high-strength fastening. The hexagonal head is designed to be gripped by a wrench or socket from the side, making them ideal for high-torque applications where there is enough room for tool access.

Choosing the Correct Grade

The two most common stainless steel grades for hex bolts offer different levels of protection:

• 304 Stainless (18-8): The standard "workhorse" grade. It contains 18% chromium and 8% nickel, providing excellent rust resistance for general outdoor use, automotive projects, and home appliances.

• 316 Stainless: Known as "Marine Grade." It contains molybdenum, which provides superior resistance to chlorides and salt spray. This is essential for any project within 5 miles of the ocean or for chemical processing equipment.

Standard vs. Full Thread

• Partial Thread (Hex Cap Screw): Features an unthreaded "shank" below the head. This provides higher shear strength and is preferred for structural alignments.

• Full Thread (Tap Bolt): The threading goes all the way to the head. These are used when the bolt is being threaded into a deep hole or when maximum adjustability is needed.

Popular Hex Bolt Options

Rely VP Industries 304 Stainless Hex Set

This 10-piece M8 x 40mm set is made from 304 stainless steel. It is a reliable choice for automotive repairs, machinery maintenance, or building outdoor structures like pergolas and gates.

WURTH 304 Stainless Full Thread Bolt

An M6 x 20mm full-thread tap bolt. These are excellent for precision assembly and electronics where the bolt needs to thread completely into a housing or bracket.

Prime-Line 316 Stainless Marine Bolt

Specifically engineered for marine environments. If you are securing hardware on a boat or dock, this 316-grade bolt prevents the "bleeding" rust stains common with lower-grade metals.

Quick Reference Guide