The ETBB38 is a slim, low-profile tungsten bucking bar that fits narrow bays without giving up the density you need behind the rivet. It measures 6 inches long by 0.75 inches wide by 0.375 inches thick and weighs 1 lbs. It is a versatile everyday size for general airframe and sheet metal riveting.

The density of tungsten packs heavy backing force into a smaller body than an equivalent steel bar, without the extra bulk. In a cramped bay that means less bar to hold and position, a steadier rebound behind the rivet set, and less hand and wrist fatigue over a long session.

Made in the United States from high density tungsten, each bar is finished to protect the panels you set rivets against. It is a dependable pick for aircraft assembly and repair, restoration and experimental builds, and any solid rivet work where control and access matter.

To be sure this is the right bar for your rivet pattern, USA Tungsten publishes this bar’s detailed measurements and photos, and why tungsten beats steel for bucking can help you compare it against other sizes and shapes.

Frequently asked questions

What jobs is the ETBB38 bucking bar best for?

It is a low-profile bar at 1 lbs and 6 by 0.75 by 0.375 inches. It is a versatile everyday size for general airframe and sheet metal riveting.

How is a tungsten bucking bar better than steel?

The density of tungsten packs heavy backing force into a smaller body than an equivalent steel bar, without the extra bulk. You get the backing mass you need without a heavy, bulky steel bar to wrestle.

Is the ETBB38 made in the USA?

Yes. It is machined in the United States from high density tungsten alloy and finished so the working faces will not scuff aluminum skin.