Specifications
- Material: 18-8 stainless steel
- Thread: SAE fine (UNF)
- Sizes: 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20
- Lengths: 1/2" to 3"
- Short lengths fully threaded, longer lengths partially threaded
Common Uses
- Marine and dock hardware
- Outdoor structures and equipment
- Food and process machinery
- Water treatment
FAQ
Hex cap screw or hex bolt?
The names are used for the same part. A hex head cap screw has a washer face under the head, a chamfered point and closer tolerances, so it fits nuts and tapped holes.
How strong are 18-8 stainless bolts?
18-8 stainless bolts to ASTM F593 have a minimum tensile strength of about 100,000 psi in 1/4" to 5/8" and about 85,000 psi in 3/4" to 1-1/2". That is stronger than Grade 2 steel but not as strong as Grade 5 or Grade 8.
How do I stop stainless threads from galling?
Stainless threads can seize (gall) when tightened fast or under heavy load. Put anti-seize on the threads, tighten slowly at low speed, keep the threads clean and don't overtighten.
Related: Stainless Hex Cap Screws USS Coarse | Stainless Hex Nuts | Stainless Flat Washers | Stainless Metric Hex Cap Screws
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