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Description
Stepped Blind Tank Bungs – 1018 Mild Steel
These stepped blind threaded bungs—also known as top hat bungs—are ideal for welding into gas tanks, oil tanks, or any steel fluid container. Precision-machined from 1018 cold rolled mild steel, these bungs feature a flanged design to ensure consistent standoff height and ease of alignment during fabrication.
The larger 7/8" diameter flange provides increased weld surface and load distribution, while the stepped 5/8" body allows you to use a smaller 5/8" hole for installation. Perfect for custom tank fabrication where clean looks and secure fittings are essential.
Features:
Made from 1018 cold rolled mild steel
Blind-tapped for a leak-resistant seal
7/8" O.D. flange section, 0.200" high
5/8" diameter stepped mounting section
1-1/8" overall height
Commonly used in custom gas or oil tanks
Sold individually
Specifications:
| Thread Size | Overall Length | Flange Diameter | Stepped Diameter | Price |
|---|---|---|---|---|
| 1/4" x 20 | 1-1/8" | 7/8" | 5/8" | $4.25 |
| 5/16" x 18 | 1-1/8" | 7/8" | 5/8" | $4.25 |
| 3/8" x 16 | 1-1/8" | 7/8" | 5/8" | $4.25 |