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Stainless NPT Bungs
NPTss$3.75 - $5.50Stainless Steel NPT Weld-In Bungs – Precision Machined These stainless steel NPT weld-in bungs are machined from solid stainless steel bar stock, then drilled and tapped to -
Stepped NPT bungs
SNPT$4.25 - $8.001018 Mild Steel NPT Weld-In Bungs – Multiple Thread Sizes Available These weld-in NPT threaded bungs are precision-machined from solid 1018 cold rolled mild steel round stock -
Aluminum Stepped NPT bungs
SNPT-AL$4.25 - $5.75Aluminum NPT Weld-In Bungs – 6061-T6 – Multiple Sizes Available Our 6061-T6 aluminum NPT weld-in bungs are expertly machined from high-strength round stock and tapped to your selected NPT thread size... -
Stainless Stepped Blind Tank Bungs
SBTB-SS$4.95Stainless Stepped Blind Tank Bungs These stepped, stainless steel, blind threaded bungs (some call them top hat bungs) are great for use in gas tanks, oil tanks or any other stainless steel fluid... -
Steel NPT Bungs
NPT 83$3.00 - $5.501018 Mild Steel NPT Weld-In Bungs – Multiple Sizes Available These NPT weld-in bungs are precision-machined from solid 1018 cold rolled mild steel bar stock, then drilled
Description
Stainless Steel NPT Weld-In Bungs – Multiple Sizes Available
Our premium 300 series stainless steel NPT threaded weld-in bungs are precision-machined from solid round stock and tapped to your specified NPT thread size. Designed for custom fabrication, these bungs are ideal for building custom oil tanks, gas tanks, fluid reservoirs, and other fabrication projects where durability and strength are critical.
Each bung features a larger flange diameter to increase weld surface area, offering enhanced structural integrity and a secure, leak-resistant fit. Available in multiple sizes and lengths to suit your specific needs, these bungs are a go-to solution for professional builders and DIY fabricators alike.
Available Sizes & Pricing:
| NPT Thread | Overall Length | Flange Diameter | Stepped Diameter | Price |
|---|---|---|---|---|
| 1/8" NPT | 1/2" | 3/4" | 1/2" | $4.95 |
| 1/4" NPT | 1/2" | 7/8" | 5/8" | $5.45 |
| 3/8" NPT | 1/2" | 1" | 13/16" | $5.95 |
| 1/2" NPT | 0.650" | 1-1/4" | 1" | $6.95 |
Features:
300 Series Stainless Steel – corrosion-resistant and strong
Precision-machined NPT threads
Wide flange for maximum weld area
Ideal for custom motorcycle tanks, hot rod builds, and industrial applications
Whether you're fabricating a custom Harley oil tank or building performance parts from scratch, these weld-in bungs deliver the strength and reliability your project demands.