# USA Tungsten > Quote-only catalog of 51 standard tungsten bucking bars for aircraft and aerospace riveting, plus custom and private-label tooling. Tungsten alloy is about 2.5 times denser than steel, so a smaller bar delivers the same bucking mass with easier access and less hand fatigue. Every bar is quote-only with no online pricing; standard bars ship from stock and custom bars ship on a confirmed lead time. US-owned and operated; AS9100D, ISO 9001, and ITAR/DDTC. For a full machine-readable specification of every bar (dimensions, weight, shape, weight class, access, and ATS equivalent), see [llms-full.txt](https://usatungsten.com/llms-full.txt). ## Start here - [Bucking Bar Selector](https://usatungsten.com/selector/): guided wizard that recommends a bar from your industry, work area, access, rivet size, and weight feel. - [ATS and Competitor Cross-Reference](https://usatungsten.com/cross-reference/): map ATS and competitor part numbers to USA Tungsten bars. - [Size and Weight Chart](https://usatungsten.com/learn/bucking-bar-size-and-weight-chart/): dimensions, weight, shape, weight class, and ATS equivalent for every bar. - [Request a Quote](https://usatungsten.com/request-a-quote/): every bar is quote-only; submit the form for current pricing and lead time. ## Catalog - [All Tungsten Bucking Bars (51 standard SKUs)](https://usatungsten.com/bucking-bars/): straight, angled, offset, hook, and low-profile bars. - [Straight bars](https://usatungsten.com/bucking-bars/shape/straight/): backing solid rivets on flat skin and open structure. - [Angled bars](https://usatungsten.com/bucking-bars/shape/angled/): angled faces for sloped or boxed-in work. - [Offset bars](https://usatungsten.com/bucking-bars/shape/offset/): stepped profiles that clear flanges and obstructions. - [Hook bars](https://usatungsten.com/bucking-bars/shape/hook/): reach around ribs and into channels. - [Low-profile bars](https://usatungsten.com/bucking-bars/shape/low-profile/): thin bars for shallow clearance. ## Learn - [What Is a Bucking Bar](https://usatungsten.com/learn/what-is-a-bucking-bar/): what a bucking bar does and how it works. - [How to Choose a Bucking Bar](https://usatungsten.com/learn/how-to-choose-a-bucking-bar/): match shape, weight, and reach to the job, with a decision matrix. - [Tungsten vs. Steel Bucking Bars](https://usatungsten.com/learn/tungsten-vs-steel-bucking-bars/): why density changes how a bar bucks. - [Bucking Bar Weight Guide](https://usatungsten.com/learn/bucking-bar-weight-guide/): how much mass for your rivet size. - [Bucking Bar Shapes Explained](https://usatungsten.com/learn/bucking-bar-shapes-explained/): straight, angled, offset, hook, and low-profile, and when to use each. - [Care, Safety, and Handling](https://usatungsten.com/learn/care-safety-and-handling/): handling, storage, and caring for the bar. - [Glossary](https://usatungsten.com/learn/glossary/): bucking bar and riveting terms defined. ## Blog - [Blog](https://usatungsten.com/blog/): weekly riveting guides and bucking bar how-tos for airframe and homebuilt aircraft work. - [Steel to Tungsten Bucking Bar Cross Reference: Downsize Without Losing Weight](https://usatungsten.com/blog/steel-to-tungsten-bucking-bar-cross-reference/): A steel to tungsten bucking bar cross reference is a size conversion, not a weight conversion. Real weight classes worked out, plus how to find your own steel bar's tungsten equivalent. - [Bucking Bars for a Van’s RV Build: What Size for Skins, Ailerons, Elevator](https://usatungsten.com/blog/bucking-bar-for-rv-14/): What bucking bar size fits an RV-14 build. A rivet-diameter breakdown for skins, ribs, spars, and control surfaces, plus how many bars a full kit actually needs. - [How to Buck a Solid Rivet: A Step by Step Guide to Clean Shop Heads](https://usatungsten.com/blog/how-to-buck-a-rivet/): How to buck a solid rivet: the sequence experienced buckers run, the dimensional check that tells you the shop head is good, and the five failures worth recognizing on sight. - [Bucking Bar Weight by Rivet Size: A Quick Lookup for AN470 and AN426 Rivets](https://usatungsten.com/blog/bucking-bar-weight-for-rivet-size/): A quick rivet size to bucking bar weight lookup for AN470 and AN426 solid rivets, plus the reasoning to adjust it for your own structure, gun, and access. ## Programs and services - [Buyback Program](https://usatungsten.com/buyback/): return worn or broken bars and the recovered tungsten weight becomes a credit toward your next order. - [Managed Inventory](https://usatungsten.com/managed-inventory/): vendor-managed stock so production shops keep the right bars on hand. - [Custom and OEM](https://usatungsten.com/custom/): build-to-print and private-label tungsten bucking bars. - [Quality and Finish](https://usatungsten.com/quality/): high-density tungsten alloy, smooth working faces, inspection to your spec on request. - [Shipping and Lead Times](https://usatungsten.com/shipping-and-lead-times/): standard bars ship from stock; custom bars ship on a confirmed lead time. - [Kits](https://usatungsten.com/kits/): curated bar sets for common job types. ## Industries - [Aerospace and Airframe](https://usatungsten.com/industries/aerospace/): production airframe riveting on fatigue-critical structure. - [Experimental and Kit Aircraft](https://usatungsten.com/industries/experimental-rv/): Vans RV and other kit aircraft builds. - [MRO and Maintenance](https://usatungsten.com/industries/mro/): field rivet replacement and tight-access repairs. - [Auto Restoration](https://usatungsten.com/industries/auto-restoration/): panels, floors, and patch repairs in steel and aluminum. - [Marine](https://usatungsten.com/industries/marine/): aluminum hull, deck, and structural riveting. ## Related - [TungstenParts.com](https://tungstenparts.com/): sister company; the full line of tungsten products, heavy alloys, and custom machining beyond bucking bars. ## Reference - [FAQ](https://usatungsten.com/faq/): common questions on sizing, shapes, quotes, and lead time. - [Spec Sheet Downloads](https://usatungsten.com/resources/): per-SKU PDF spec sheets for all 51 bars. ## Optional - [About USA Tungsten](https://usatungsten.com/about/): who we are; for the full line of tungsten products and alloys, see sister company TungstenParts.com. - [Privacy Policy](https://usatungsten.com/privacy/): how this website handles information.