Serrated Hex Flange Nuts – Stainless Steel 18-8 (304)
Description:
Premium stainless steel serrated hex flange nuts made from 18-8 (304) for reliable strength and excellent corrosion resistance.
The built-in flange helps spread load like a washer, while the serrated face helps resist loosening under vibration.
Applications:
Great for automotive, machinery, equipment frames, brackets, sheet metal assemblies, and general fastening where a secure, vibration-resistant hold is preferred.
Key Features:
Hex flange design (integrated washer) + serrations for grip • Plain / uncoated stainless • Right-hand thread.
How to Order:
Select your Thread Size and Quantity from the drop-down menu above.
All variations ship fast with tracking and multi-quantity discounts.
📦 Built for repeat buyers
Clean, accurate listings, fast U.S. shipping, and responsive support.
🚚 Need it faster?
UPS 2nd Day Air and UPS Next Day Air may be available by request.
Please message us before purchasing with your ZIP code to confirm inventory availability, cutoff times, and estimated upgrade pricing.
📦 Need a larger quantity?
Volume pricing may be available beyond the listed options.
Message us with the size and total quantity needed to confirm availability and pricing.
Clean, accurate listings, fast U.S. shipping, and responsive support.
🚚 Need it faster?
UPS 2nd Day Air and UPS Next Day Air may be available by request.
Please message us before purchasing with your ZIP code to confirm inventory availability, cutoff times, and estimated upgrade pricing.
📦 Need a larger quantity?
Volume pricing may be available beyond the listed options.
Message us with the size and total quantity needed to confirm availability and pricing.
Available Thread Sizes:
| Thread Size | Thread Series | Common Name |
|---|---|---|
| #8-32 | UNC (Coarse) | #8 Coarse |
| #10-24 | UNC (Coarse) | #10 Coarse |
| #10-32 | UNF (Fine) | #10 Fine |
| #12-24 | UNC (Coarse) | #12 Coarse |
| 1/4"-20 | UNC (Coarse) | 1/4 Coarse |
| 1/4"-28 | UNF (Fine) | 1/4 Fine |
| 5/16"-24 | UNF (Fine) | 5/16 Fine |
| 3/8"-16 | UNC (Coarse) | 3/8 Coarse |
| 3/8"-24 | UNF (Fine) | 3/8 Fine |
| 1/2"-13 | UNC (Coarse) | 1/2 Coarse |
Note: Serrations are designed to bite into the mating surface. Use with care on painted, plated, or soft materials where surface marking is a concern.
💡 Pro Tip: For best locking performance, install with the serrated flange side against clean, bare metal.
If you need to protect a finished surface, use a flat washer between the flange and the material.