The ETBB47 is an offset stepped tungsten bucking bar for backing rivets in recessed or stepped structure a flat bar bottoms out against. At 5.05 lb and 5 x 2 x 2 inches, it brings the backing mass of a much larger steel bar to the rivet, so shop heads form clean with less shock to your hand.
A tall block steps down to a lower platform so the bar clears a raised land while dense tungsten backs the rivet tail. The extra mass suits larger rivets and thick, fatigue-critical structure and keeps the bar planted under the gun.
- Dimensions: 5 x 2 x 2 in
- Weight: 5.05 lb (heavy)
- Shape: Offset
- Best-fit access: stepped and recessed structure
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Questions about this bar
What is the ETBB47 tungsten bucking bar used for?
The ETBB47 is a heavy tungsten bucking bar for larger rivets and thick structure, delivering maximum backing mass in a hand-held bar. Hold it flat and square against the rivet tail so the shop head forms evenly.
How much does the ETBB47 bucking bar weigh and what size is it?
The ETBB47 weighs 5.05 lb and measures 5 by 2 by 2 inches. You buy a bucking bar by weight, and tungsten packs that weight into a far smaller block than steel.
Why is the ETBB47 made of tungsten instead of steel?
Tungsten alloy is about 2.5 times denser than steel, so the ETBB47 delivers the same bucking mass as a steel bar more than twice its size. The compact mass means better access in tight structure and less shock to your hand.
