Tethered hardware · Dropped object prevention
A loose bolt should never become a falling one.
Safety Wire Bolts patent-pending tethered fasteners stay captive even when vibration and load cycling back them out. Positive secondary retention for things that run overhead — installed with the same tools and torque procedures your crew already uses.
Sources: U.S. Bureau of Labor Statistics; OSHA
The hazard
Every fastener overhead is working against gravity.
Vibration, shock loading, thermal cycling, and thousands of duty cycles slowly back standard fasteners out. Wherever that hardware sits above people, product, or equipment — cranes, conveyors, elevated structures, turbines, platforms — gravity does the rest.
- Cranes, hoists & monorails — constant travel vibration loosens rail clips, end truck hardware, and cover bolts.
- Rotating & conveying equipment — conveyors, fans, blowers, and drives walk fasteners out of guards, housings, and access covers.
- Elevated structures & supports — grating clips, handrail bolts, pipe hangers, and platform hardware sitting above active work areas.
- Panels, guards, lighting & fixtures — junction boxes, light fixtures, sensors, and small covers shed hardware first — and are checked last.
The fix · Patent pending
Positive retention, built into the bolt.
A Safety Wire Bolts tethered bolt pairs the fastener with a patent-pending engineered retention tether anchored to the structure. This is not field-applied lockwire — retention is built into the fastener. If the bolt ever backs out, it hangs; it doesn't fall. Designed and made in the USA.
Captive by design
The tether is rated for the fastener it carries. A backed-out bolt stays at height, attached and recoverable — never in free fall over your crew.
Standard tools, standard torque
No exotic procedure. Tethered bolts install with the wrenches and torque specs your maintenance team already runs, on new builds or retrofits.
Verify at a glance
A visible tether makes inspection fast: if it's hanging, you found your loose fastener before gravity did. Fold it into the inspection routine you already run.
Ordering
Every run is made to order.
Safety Wire Bolts hardware is manufactured to your application — thread size, grade, finish, and tether rating are built to spec. Because each run is produced to order, minimum purchase quantities apply. Orders are placed through your local authorized distributor.
- Production
- Made to order per specification — no off-the-shelf inventory, no substitutions.
- Origin
- Designed and manufactured in the USA.
- Technology
- Patent-pending tethered retention system.
- Sizing
- Thread sizes, lengths, grades, and finishes matched to your existing OEM hardware.
- Tether rating
- Retention rated to the mass of the fastener assembly it secures.
- Minimums
- Minimum order quantities apply per size and finish — confirmed by your distributor.
- Lead time
- Quoted with your order based on run size and specification.
Find a distributor
Tell us what's overhead.
Send your location and application and we'll email you the details for the authorized Safety Wire Bolts distributor covering your territory — usually within one business day.