RAT1100 Lockbolt Tool Guide: Find the Perfect Match for Truck Cab and Trailer Repairs | Reliable Air Tools

I get some version of this call almost every week. A shop foreman tells me his old Huck gun finally quit on him mid-job. An owner-operator says he's tired of driving forty minutes to have someone else pull a single trailer rivet. A body shop wants to stop farming out sleeper conversions. Sometimes it's a fleet maintenance manager who's tired of scheduling three trucks around one outside vendor's calendar. Every one of them asks the same thing: which tool do I actually need, and am I going to regret the one I pick?

So instead of giving you a spec sheet and wishing you luck, let me walk you through how I'd talk this through if you called Reliable Air Tools right now, using the four tools in our 3/8" capacity lockbolt lineup.

If you already own noses, start with the bare RAT1100

This is the tool by itself, no nose included, and it's the one I point people to when they've already got noses sitting in a drawer from a Huck 225, 226, 245, 246, 256, or a Gage Bilt 756. Since it uses the same 1‑1/16" nose diameter as those tools, there's nothing new to buy on that end. You're just replacing a worn-out puller.

What you're getting for $1,695 is a pneudraulic riveter with a chrome-moly pulling plunger hardened to Rockwell C30, a 10,000 lb. pull rating at 100 psi, and a hydraulic reservoir built right into the cylinder rod so you're not chasing leaks every other week. It's made overseas, but about half the seals come out of Europe, which is the detail I always mention because it's usually the seals that fail first on cheaper import tools.

Day to day, the fluid side of things is simpler than most guys expect. It runs on ordinary automatic transmission fluid DEXRON III, DEXRON VI, MERCON®, or Allison C-4 all work fine so there's no proprietary hydraulic oil to hunt down when it's low. At 70 to 100 psi of shop air and a 12 lb. body weight, it's light enough that a tech isn't fighting the tool by the third truck of the day, which matters more than people think once you're a few hours into a shift.

Here's the part I always tell people before they buy anything import-branded: the failure point on a cheap riveter is almost never the pull capacity, it's the seals and the plunger. That's exactly why the RAT1100's plunger is a single piece of hardened chrome-moly instead of a stamped or welded assembly, and why we source half the seal kit out of Europe rather than cutting that corner too. If a seal does eventually wear out a couple thousand pulls down the road, it's a cheap part, not a reason to replace the whole tool and our parts and accessories page keeps the common ones in stock.

Trailer-only shop? The Basic Trailer Kit saves you a second purchase

If your work is mostly trailer panel repair Kenworth, Peterbilt, Freightliner, Mack, doesn't matter the $1,995 Basic Trailer Kit is the same tool bundled with the 3/8" Magna-Grip® nose you'd need anyway. I'd rather sell you the kit than watch you order the bare tool and come back a week later asking which nose to add, because that second shipment always costs you more in freight and downtime than the $300 difference here.

This is also the setup I recommend to shops that only see a handful of trailer jobs a month rather than running a dedicated bay for it. You're not paying for grille bolt or sleeper conversion capability you'll never touch, and the single nose is enough to cover most sidewall and rear-door panel work on its own.

Cab body work is a different animal that's the Complete Cab Kit

Cab repair usually means three or four different fastener sizes on the same truck: body panels, chrome grille bolts, maybe a sleeper conversion. That's why the $2,595 Complete Cab Kit ships with 3/16" and 1/4" Magna-Grip® noses for panels, a 3/16" C6® nose for grille bolts, and a 3/16"–1/4" Magna-Lok® blind fastener nose with reducing adapter for sleeper work. It's a slightly shorter tool with a quicker stroke than the trailer version, which actually makes it easier to work in tight cab corners.

One thing worth knowing before you order: this version has a slightly longer overall height and shorter head length than the bare tool or the trailer kit, and it runs a touch heavier at 11 lb. versus 12 lb. for the trailer setup. That's not a downgrade it's just built around the reach you actually need when you're working around a cab frame instead of a flat trailer skin.

If you're only touching cabs and never trailers, this is where I'd stop you from overspending on the next option.

Running both cab and trailer work? Just get the Cab/Trailer Kit

This one's for the shops that don't want to have this conversation twice. At $3,095, it's everything in the Complete Cab Kit plus 5/16" and 3/8" Magna-Grip® noses for trailer panels, so one tool and one case cover cab bodywork, grille bolts, sleeper conversions, and trailer repair. Multi-bay shops and mobile repair trucks tend to land here, mostly because carrying two separate riveters in a service van gets old fast.

Every version above compares directly to a Gage Bilt 756 or a Huck 226, 246, and 256, so if you've quoted those already, you already know roughly what this tool is worth on paper.

Why buy the import version at all

I'll be straight with you: if budget weren't a factor, plenty of shops would just buy Huck-branded tools outright, and we sell refurbished Huck units for exactly that reason. But the RAT1100 line was built to install the same fastener families Huck's Magna-Grip®, Magna-Lok®, and C6® systems, which Howmet's own engineering overview of lockbolt fasteners explains in more depth if you want the full technical background at a price that a small shop or owner-operator can actually absorb in one purchase instead of financing it.

Nose sizes and jaw styles matter more than people expect here, so if you're not sure what your current tool uses, our nose reference pages break down independent versus unitized jaw noses before you order anything extra.

One more thing I'd rather tell you upfront than have you find out later: Reliable Air Tools isn't an authorized Huck® or Arconic® dealer, and we don't pretend to be. What we sell is compatible tooling built to the same nose specs and fastener families, at a price point those brands generally don't offer. If you specifically need a genuine Huck-stamped tool for a spec requirement, say so when you call, and I'll point you toward our refurbished line instead of trying to talk you into the import version.

Where I'd land if it were my shop

Buy for the work you actually do this year, not the job you might take on someday. A trailer-only shop that buys the full Cab/Trailer Kit is carrying noses it'll never touch. A growing shop that buys the bare tool and immediately needs three nose sizes is going to spend more chasing parts than it would have spent buying the kit up front.

If you're still not sure which of the four fits, call us at 360-923-1012 or email sales@reliableairtools.com and tell me what you're actually pulling cab panels, trailer skins, or both and I'll tell you straight which one to order. Every tool ship with our standard 30-day return window, so getting it wrong isn't the disaster it feels like right now.

And if this is your first lockbolt tool purchase and you want more background before you spend real money, our blog has a running set of write-ups on nose compatibility, fastener selection, and general maintenance that go deeper than what fits in one buying guide. Either way, I'd rather spend ten minutes on the phone helping you pick the right tool once than sell you the wrong one and deal with a return later.