Three Forged Steel Tie-Off Points, One Checkout
The STB01 is a forged steel threaded anchor that bolts into structural steel and gives one worker a 5,000 lb rated tie-off point. It installs in minutes with minimum effort and tools, loads in multiple directions, and unthreads just as fast — fully reusable, so it moves from one location to the next with the crew. Palm-sized at 1.33 lbs each, with a zinc plated finish for corrosion resistance.
Rated at a 5,000 lb minimum breaking strength with a 310 lb maximum user capacity, the STB01 meets ANSI Z359.18 and A10.32 and is built for OSHA 1926 construction and 1910 general industry work on steel columns, I-beams, and other steel structures. Sold as a 3-pack — three anchors ship together for $119.
Who Needs This Product
This product is an anchorage connector — the fixed tie-off point of a personal fall protection system. The structural steel it threads into is the anchorage; the worker wears a full body harness; a lanyard or self-retracting lifeline connects the two. The STB01 supplies the rated connection point, one worker per anchor — and this 3-pack puts a spare point ahead of the crew so nobody waits to tie off.
Features
Forged steel body
One-piece forged steel construction with a zinc plated finish, rated to a 5,000 lb minimum breaking strength.
Multi-direction loading
The anchor accepts loading and tie-off from multiple directions, so the connection point works as the task moves around it.
Minutes to install
Threads into most structural steel substrates with minimum effort and tools — no welding, no specialty crew.
Fully reusable
Unthread it and take it to the next location. Three anchors in this pack leapfrog down a beam line.
Palm-sized and light
1.33 lbs and compact enough to fit in the palm of your hand or ride in a tool pouch.
M14 threaded connection
M14 bolt thread engages a tapped hole in the steel member for a positive mechanical connection.
Technical Specifications
| SKU | STB01 (this listing: 3-pack) |
|---|---|
| Type | Threaded bolt-on steel anchorage connector |
| Minimum breaking strength | 5,000 lbs / 22 kN |
| Maximum user capacity | 310 lbs (one worker per anchor) |
| Weight | 1.33 lbs per anchor |
| Material | Forged steel |
| Finish | Zinc plated |
| Thread | M14 |
| Key dimensions | 4.5 in (116 mm) x 4.21 in (107 mm) body; 4 in (101 mm) eye |
| Application | Structural steel substrates |
| Standards | ANSI Z359.18, ANSI A10.32; OSHA 1926, OSHA 1910 |
| Package | 3 anchors per pack |
Structural steel only. The STB01 is rated for installation in structural steel substrates that can support 5,000 lbs per attached worker. A competent person must verify the steel member and the tapped connection before anyone ties off. One worker per anchor, 310 lbs maximum including tools.
Compliance Standards
ANSI Z359.18
Meets the American National Standard for anchorage connectors used in personal fall protection systems.
ANSI A10.32
Meets the ANSI standard for personal fall protection used in construction and demolition operations.
OSHA 1926
Suitable as an anchorage connector under OSHA construction fall protection rules when installed per the manual.
OSHA 1910
Suitable for general industry walking-working surface and fall protection applications.
Typical Applications
Installation Overview
Follow the manufacturer's manual. The sequence below is an overview only.
- Verify the steel. A competent person confirms the structural steel member can support 5,000 lbs per attached worker.
- Prepare the hole. Drill and tap an M14 hole in the steel member at the location specified by the plan, per the user manual.
- Thread the anchor. Drive the STB01 into the tapped hole until the body seats fully against the steel.
- Confirm engagement. Verify full thread engagement and that the anchor cannot loosen under hand load.
- Connect. Attach the lanyard or SRL connector to the anchor eye; one worker per anchor.
- Relocate. When the task moves, unthread the anchor and reinstall it at the next prepared hole.
Inspection and Retirement
Inspect before each use, with a documented competent-person inspection at least every 6 months. Pull the equipment from service for any of the conditions below.
- Body and eye: deformation, cracks, nicks, or corrosion in the forged steel.
- Threads: stripped, flattened, or damaged M14 threads that prevent full engagement.
- Finish: zinc plating worn through with active rust on bearing surfaces.
- Markings: product label and rating legible.
- Seating: anchor torques fully against the substrate without play.
Retirement triggers: any fall arrest loading, deformation or thread damage, significant corrosion, illegible markings, or any condition where the inspector cannot verify the anchor is fit for service. Destroy retired anchors so they cannot return to use.
Fall ProtectionDistributors, LLC Free Tool · No Signup · OSHA 1926.502 Free Interactive Tool Fall Protection Calculator Pick your system. Run the math. Generate a plan. 1Pick Your SystemDetermine fall restraint vs. fall arrest based on your work surface, edge access, and clearance. 2Run the MathCalculate exact fall clearance required below the work surface for your SRL or lanyard setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Frequently Asked Questions
Frontline STB01 Submittals and Documentation
Frontline STB01 Spec Sheet (PDF)Dimensions, materials, strength ratings, and the full compliance summary. Frontline STB01 Test Report (PDF)Third-party laboratory test results documenting the strength rating. Frontline STB01 User Manual (PDF)Installation, use, inspection, and retirement procedures.Compatible and Related Products
- Frontline STB5K ALPHA Swivel Steel Anchor. The 5,000 lb swivel D-ring version with bolt included.
- Frontline STWD5K ALPHA Swivel Weld-on Anchor. The ALPHA swivel anchor with a weld-on mounting puck.
- Frontline SBW01 Weld/Bolt-on Steel and Concrete Anchor. A dual-substrate plate anchor for steel or concrete.
- Frontline RO Commercial Roof Anchor. The ANSI Z359.18 roof anchor for concrete, metal, and wood decks.
Anchoring a Crew on Structural Steel?
Need help specifying the right system for your jobsite? Confirm your application, anchorage, and clearance with us and we will walk through the kit list so the right equipment ships together.
Call 863-703-4522 to talk to a fall protection specialist.
