Bungs

1018 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 and tapped to National Pipe Thread (NPT) standards for secure, leak-free...

Coped Threaded Bungs – 3/8"-16 Thread, 1" OD, 1018 Mild Steel Our Coped Threaded Bungs are designed for strength, precision, and versatility in fabrication projects. Each bung features one coped (fish-mouthed) end, allowing it to fit seamlessly...

Non-Vented Filler Cap & Bung Kit – 1.25"-12 Thread, Compact Design The non-vented filler cap and bung kit is a compact and clean solution for gas tanks, oil tanks, and fluid reservoirs where external venting is preferred or required. Using our...

Oil Tank Filler Cap & Bung Kit with (3) 1/8" NPT Bungs – Complete Weld-In Kit Build your custom oil tank the right way with this all-in-one weld-in bung kit. Designed for both performance and clean looks, this kit provides every threaded...

These weld bungs are made of solid round stock and drilled and threaded to your specified SAE thread. Bungs come in a few different lengths and diameter options depending on thread size. The shorter of the two sizes is tapped through and the longer ones...

These are stainless heim joints/ rod ends are  used commonly in the bike industry for shifter rods. The common thread  used in most Factory HD and aftermarket shifter rods is 5/16" x 24. Also available in 1/4 x 28. They can also be used when...

These blind tapped tank bungs are made from 6061-T6 aluminum.  They are commonly used to weld into fluid containers to provide a threaded, leak proof mount.  They come in two different thread pitches.  The larger diameter allows more room...

Upgrade your fabrication projects with our 3/4" OD Coped Threaded Bungs, designed for strength, precision, and versatility. Each bung features one end coped (fish-mouthed) to fit seamlessly over 1" tubing or solid bar, providing a clean fit and a wide...

1/4"-20 Weld-In Threaded Bungs – 1018 Mild Steel These versatile 1/4"-20 weld-in threaded bungs are precision machined from 1018 cold rolled mild steel round stock and are ideal for a wide range of custom fabrication and mounting applications. Also...

These bungs are for adapting your custom exhaust system to work with your fuel injections factory O2 sensors: Made of 1018 mild steel Tapped to fit 18mm x 1.5 or the later 12mm O2 sensors used by Harley and other OEM applications 1" O.D. for 18mm 3/4 od...

6061 Aluminum NPT Weld-In Bungs – Lightweight & Corrosion-Resistant These NPT weld-in bungs are precision-machined from solid 6061-T6 aluminum bar stock and tapped to standard National Pipe Thread (NPT) specifications. Commonly used for fluid...

Brass Vented Filler Cap & Bung Kit – 1.25"-12 Thread Back by popular demand, we’re now offering a vented filler cap and bung kit featuring a solid brass cap. Built on the same trusted platform as our original design, this version combines...

Weld-On Counterbored Steel Bungs – For 3/8" Socket Head Cap Screws Get a clean, flush-mounted finish with our precision-machined weld-on counterbored bungs – designed specifically to accept socket head cap screws (Allen bolts). Each bung is...

Weld-On Counterbored Steel Bungs – For 1/4" Socket Head Cap Screws Get a clean, flush-mounted finish with our precision-machined weld-on counterbored bungs – designed specifically to accept socket head cap screws (Allen bolts). Each bung is...

Coped Threaded Bungs – 3/8"-16 Thread, 1" OD, 1018 Mild Steel Our Coped Threaded Bungs are designed for strength, precision, and versatility in fabrication projects. Each bung features one coped (fish-mouthed) end, allowing it to fit seamlessly...

Counterbored Weld-In Bung Assortment Kit 40pcs– Save 10% on Fabrication Essentials Get everything you need for clean, professional fabrication work with our Counterbored Weld-In Bung Assortment Kit. Each bung is CNC-machined from high-quality mild...

Weld-On Counterbored Steel Bungs – For 7/16" Socket Head Cap Screws Get a clean, flush-mounted finish with our precision-machined weld-on counterbored bungs – designed specifically to accept socket head cap screws (Allen bolts). Each bung is...

By popular demand we are now making a Brass Vented version of our common Filler Cap and Bung Can be used for gas tanks oil tanks or any other fluid container. These caps use the same standard bung we have used for years so if you want to upgrade to a...

Weld-On Pointed Bullet Bung – 1.5" x 3/4", 1018 Steel | Blind Threaded These pointed weld-on bullet bungs offer a sleek, aggressive profile that closely resembles an actual bullet—perfect for builds where form is just as important as...

Seat Spring Perches / Mounts – Weld-On Chassis Brackets Upgrade your custom motorcycle or classic bike build with our Seat Spring Perches, designed to securely mount and locate the lower section of your sprung solo seat. These perches are welded...

Threaded Bullet Bung Assortment Kit 30pcs – Cold Rolled Steel, Blind Tapped This bullet-style weld-on bung assortment kit is perfect for builders and fabricators who need multiple sizes on hand for various projects. Made from solid 1018 cold rolled...

7/16"-14 Weld-In Threaded Bungs – 1018 Mild Steel These 7/16"-14 weld-in threaded bungs are machined from durable 1018 cold rolled mild steel round bar with a 7/8" outer diameter, offering a strong weld footprint for high-stress fabrication work...

2" Threaded Bullet Bung – Blind Tapped, Cold Rolled Steel These weld-on threaded bullet bungs are precision machined from solid 1018 cold rolled mild steel and designed for builders who demand both strength and clean aesthetics. Each bung features...

These weld bungs are made of solid round stock and drilled and threaded to your specified SAE thread. Bungs come in a few different lengths and diameter options depending on thread size. The shorter of the two sizes is tapped through and the longer ones...

Coped Threaded Bungs – 3/8"-16 Thread, 1" OD, 1018 Mild Steel Our Coped Threaded Bungs are designed for strength, precision, and versatility in fabrication projects. Each bung features one coped (fish-mouthed) end, allowing it to fit seamlessly...

22mm Petcock Weld-In Bungs – 1018 Mild Steel (Short & Long Options) These 22mm weld-in petcock bungs are machined from solid 1018 cold rolled mild steel and tapped to accept standard 22mm x 1.0 thread motorcycle petcocks—perfect for...

5/16"-18 Weld-In Threaded Bungs – 1018 Mild Steel These weld-in bungs are machined from solid 1018 cold rolled mild steel round stock, then drilled and threaded to 5/16"-18 SAE coarse thread. Commonly used as weld nuts or threaded standoffs, these...

Seat Pan Bungs – 1" OD Weld-On Mounting Bungs for Custom Seat Pans Building your own custom steel seat pan? Our Seat Pan Bungs are the ideal solution for mounting seat springs, front pivots, and other hardware to thin or lightweight seat pans...

Counterbored Weld-In Bung Assortment Kit 16pcs– Save 5% on Fabrication Essentials Get everything you need for clean, professional fabrication work with our Counterbored Weld-In Bung Assortment Kit. Each bung is CNC-machined from high-quality mild...

3/8"-16 Weld-In Threaded Bungs – 1018 Cold Rolled Mild Steel These 3/8"-16 weld-in threaded bungs are machined from solid 1018 cold rolled mild steel round stock and precision-tapped for SAE coarse thread. Also known as weld nuts or threaded...

Weld-On Counterbored Steel Bungs – For 5/16" Socket Head Cap Screws Get a clean, flush-mounted finish with our precision-machined weld-on counterbored bungs – designed specifically to accept socket head cap screws (Allen bolts). Each bung is...

These threaded bullet bungs are made of solid cold rolled steel and drilled and tapped to you thread choice. These are blind bungs (hole does not go all the way through) and are rounded with a full radius at opposite end. A few different lengths are...

Weld-On Counterbored Steel Bungs – For 1/2" Socket Head Cap Screws Get a clean, flush-mounted finish with our precision-machined weld-on counterbored bungs – designed specifically to accept socket head cap screws (Allen bolts). Each bung is...

1.5" Threaded Bullet Bung – Blind Tapped, Cold Rolled Steel These weld-on threaded bullet bungs are machined from solid 1018 cold rolled mild steel and designed with both function and appearance in mind. Each bung is blind tapped—meaning...