Technical Foundation
What Is a T-Bolt?
The name T-bolt covers two mechanically unrelated products. A T-slot bolt has a T-shaped or hammer-shaped head sized to slide into and lock inside a matching T-slot channel — common in aluminum extrusion framing systems (80/20-style) and on machine tool tables — where the head's width and profile must match the specific slot series (a T-slot bolt for one extrusion series generally won't fit another's slot dimensions). A T-bolt hose clamp is a completely different product: a metal band wrapped around a hose with a T-shaped bridge piece that a single bolt tightens against, distributing clamping force more evenly around the hose circumference than a worm-gear clamp, and holding torque better under vibration.
For T-slot bolts, head style (standard hammer-head vs. drop-in ball-and-spring style that self-retains before rotating into position) affects assembly method and whether the bolt can be inserted mid-span or only from the slot's open end. For T-bolt hose clamps, clamp range (the diameter span the band adjusts across) and band width must be matched to the actual hose OD and the clamping force required, since an oversized clamp range reduces the clamp's grip precision at the low end of its range.
Prefer a quick quote?
Get T-Bolts Pricing in Your Inbox
Skip the search — tell us the application (T-slot fastening or hose clamping), thread size or clamp range and we will come back with pricing.
| Spec | What It Means | Why It Matters |
|---|---|---|
| Head Style (T-slot) | Hammer-head vs. drop-in ball-and-spring | Drop-in style self-retains in the slot at any point; hammer-head typically loads from the slot's open end |
| Slot Profile Match | Extrusion series-specific (e.g., 20-series, 30-series) | T-slot bolt head width must match the specific extrusion or table T-slot series — not universal |
| Clamp Range (hose clamp) | Diameter span the T-bolt clamp adjusts across | Should center on the actual hose OD, not just fall within the range, for accurate torque and seal |
| Band Material | Stainless steel (301/304) common for corrosion resistance | Stainless resists rust and holds torque better than plated steel in wet or engine-bay environments |
| Thread Size (T-slot) | M6–M12 or 1/4-20 to 1/2-13 common | Matched to the extrusion series and the load the connection needs to carry |
Shop T-Bolts
Browse T-Bolts Sub-Categories
Organised by application. Pick a sub-category, or describe the T-slot profile, extrusion series, or hose diameter you're working with and let ChatMRO match the fastener.
How it works
From Half-Remembered Part Number to PO, in Three Steps.
Ask
Type an MPN, paste a spec sheet, or describe the part in plain English. ChatMRO understands engineer-speak.
Compare
Side-by-side specs, cross-references, and equivalents from multiple sources — without the clutter of endless browser tabs.
Quote & Buy
Request a quote or add to cart. Volume discounts, VAT-aware pricing, and consolidated procurement — all in one place.
Applications
Where T-Bolts Get Used
T-bolts are specified either for sliding, adjustable fastening into a T-slot channel, or for high-force, even clamping on large-diameter hose.
Machine Tool Fixturing
T-slot bolts anchoring workholding fixtures and clamps directly into machine table T-slots.
Aluminum Extrusion Framing
T-slot bolts and nuts assembling modular aluminum frame structures for enclosures, conveyors and workstations.
Automotive & Turbo Charge Piping
T-bolt hose clamps securing silicone couplers on turbocharger intake and intercooler piping under boost pressure.
Industrial Hose & Ducting
T-bolt clamps providing high, even clamping force on large-diameter flexible ducting and hose connections.
Marine Engine & Exhaust Systems
Stainless T-bolt clamps securing hose connections in engine bays exposed to saltwater and vibration.
Modular Conveyor & Automation Framing
T-slot fasteners building adjustable guarding, sensor mounts and conveyor frame structures.
FAQ
T-Bolts Questions, Answered
Are T-slot bolts and T-bolt hose clamps the same product?
No — they share a name because both use a T-shaped component, but mechanically they're unrelated. A T-slot bolt has a T-shaped head that slides and locks into a machine table or extrusion T-slot channel. A T-bolt hose clamp is a band-and-bridge assembly that wraps around a hose, with the T-shaped bridge piece being what the tightening bolt threads into — make sure you're searching the right product for your application.
Will a T-slot bolt from one extrusion brand fit another brand's T-slot?
Not reliably — T-slot profiles vary by series (commonly referred to by nominal extrusion width, like 20-series or 30-series, or by slot width in millimeters) and different manufacturers' extrusions aren't always dimensionally identical even within a similarly-named series. Always match the T-slot bolt head width and thickness to the specific extrusion's published slot dimensions rather than assuming cross-brand compatibility.
What's the advantage of a T-bolt hose clamp over a standard worm-gear clamp?
A T-bolt clamp's band and bridge design distributes clamping force more evenly around the full circumference of the hose than a worm-gear clamp, which tends to concentrate force near the gear housing and can locally deform softer hose material. T-bolt clamps also generally hold their set torque better under vibration, which is why they're the standard choice for turbocharger and forced-induction hose connections in automotive applications.
What's the difference between hammer-head and drop-in (ball-and-spring) T-slot bolts?
A hammer-head T-slot bolt has a solid rectangular head that must be inserted from the open end of the slot and slid into position, or dropped into an access hole if the slot profile allows it. A drop-in (ball-and-spring) T-slot bolt has a spring-loaded head that can be pushed into the slot at any point along its length and will pop out to full width once released, making it easier to position fasteners mid-span without disassembling the frame.
How do I choose the right clamp range for a T-bolt hose clamp?
Measure the actual outer diameter of the hose at the clamping point and choose a T-bolt clamp whose adjustable range centers on that measurement rather than one where your hose diameter falls at the extreme low or high end of the range — a clamp working near the edge of its range has less band overlap and can apply less even, less predictable clamping force than one working near the middle of its range.
Keep browsing
Related Categories
Explore More
Find Your Next Part Now.
Describe a part number, spec or what it does.