Stainless Steel Flange Bolts
What are stainless steel flange bolts? Stainless steel flange bolts are hex bolts with a built-in washer-like flange under the head that spreads clamping load and resists loosening without a separate washer. Made from 18-8 stainless, they resist rust in wet and outdoor assembly while speeding installation.
How the flange replaces a washer and speeds assembly
The integrated flange spreads clamping force over a wider area, just like a washer, so you handle one part instead of two and cut assembly time. Serrated flange versions add teeth that bite the surface to resist loosening under vibration, which suits machinery and equipment, though the teeth mark the surface. In 18-8 stainless, the flange bolt keeps its corrosion resistance across the whole bearing area for wet and outdoor work.
Why choose stainless steel flange bolts
- Built-in washer: the flange spreads load with no separate washer.
- Faster assembly: one part does the work of a bolt and washer.
- Corrosion resistance: 18-8 stainless holds up in wet and outdoor use.
- Vibration option: serrated flange resists loosening.
Common applications for stainless flange bolts
- Machinery and equipment frames
- Automotive and trailer assembly
- Production work where speed matters
- Outdoor and wet-environment fastening
For the nut side, see matching stainless flange nuts, and browse the full flange bolt range in every finish on the main flange bolts category.
Stainless Steel Flange Bolts FAQ
Do flange bolts need a washer?
No. The built-in flange spreads load like a washer, which is a main reason to use a flange bolt.
What is the difference between serrated and smooth flange bolts?
Serrated flanges have teeth that bite the surface to resist loosening but leave marks. Smooth flanges spread load without marring finished surfaces.
What stainless grade are these flange bolts?
They are 18-8 stainless, which offers strong corrosion resistance for indoor, outdoor, and general wet-environment use.