123N Compact Single D-Ring Body Belt
The Miller 123N is the minimalist positioning belt: 1-3/4 inch high-strength webbing, a single back D-ring, and a low-profile cut that stays out of the way under a tool rig. For restraint lines and light positioning work, it is the simplest compliant option Miller makes.
Made in the United States and TAA compliant, the 123N serves work positioning and restraint applications. Body belts are not fall arrest equipment; pair the belt with an independent fall arrest system where a fall hazard exists.
Miller Body Belt Sizing
| Size | Waist Measurement |
|---|---|
| Small | 31 in to 39 in |
| Medium | 35 in to 43 in |
| Large | 39 in to 47 in |
| X-Large | 42 in to 50 in |
| 2X-Large | 46 in to 54 in |
Measure over your normal work clothes at the natural waist. Based on the manufacturer's published body belt sizing; verify fit per the user manual before first use.
Who Needs This Product
The 123N suits workers who need a restraint or positioning attachment without wearing a full harness: aerial lift restraint where the rules allow it, light positioning tasks, and restraint lines that keep a worker away from an edge. Anyone exposed to an actual fall hazard needs a full body harness; the Titan II and H500 lines start under a quarter of premium harness prices.
Features
Single Back D-Ring
One forged D-ring at the back center provides the restraint or positioning attachment point.
1-3/4 Inch Webbing
High-strength webbing balances capacity with a compact, low-profile wear.
Tongue Buckle Closure
A belt-style tongue buckle with grommets gives a positive, indexed fit adjustment.
Lightweight Build
No pads or extra hardware, so the belt disappears under a tool rig.
Made in the USA
Built in the United States and TAA compliant for federal purchasing.
Six Vendor Sizes
Made in S through 3XL; the Medium is stocked and other sizes are available on request.
Technical Specifications
| SKU | 123N/MBK |
|---|---|
| Product | 123N Compact Single D-Ring Body Belt |
| Size | Medium |
| Color | Black |
| Webbing | 1-3/4 inch high-strength |
| D-rings | 1, back center |
| Closure | Tongue buckle |
| Approved use | Work positioning and restraint only; never fall arrest |
| Country of origin | United States |
| Standards | OSHA 1926.502(e); TAA compliant |
| Warranty | Miller Limited Lifetime Warranty against defects in workmanship and materials |
Body belts are not fall arrest equipment. OSHA prohibits body belts for personal fall arrest. Use this belt for work positioning and restraint only, rigged so free fall is limited to 2 ft per OSHA 1926.502(e), with an independent fall arrest system where a fall hazard exists.
Compliance Standards
OSHA 1926.502(e)
Approved for work positioning device systems rigged to limit free fall to 2 ft. OSHA has prohibited body belts for fall arrest since 1998.
ANSI A10.32
Body belts serve positioning and restraint under ANSI construction fall protection practice, never fall arrest.
TAA Compliant
Listed as TAA compliant by the manufacturer, allowing purchase on federal projects that require Trade Agreements Act sourcing.
Typical Applications
Fitting Overview
- Thread the belt through tool rig loops if used, keeping the D-ring centered at the back.
- Position the belt at the natural waist, above the hip bones.
- Set the tongue buckle so the belt is snug but allows a flat hand between belt and body.
- Connect the restraint or positioning lanyard to the D-ring and verify the gate is locked.
- Confirm the rigging limits free fall to 2 ft before loading the system.
Use limitations and care instructions are in the Miller I119 manual linked below.
Inspection and Retirement
Inspect the belt before each use, and have a competent person other than the user formally inspect it at least annually. Record the results on the inspection form linked in the documentation section.
- Webbing: cuts, frays, burns, chemical damage, UV fading, or broken stitching.
- D-rings: cracks, corrosion, distortion, or sharp edges.
- Buckle and grommets: bent tongues, elongated holes, or loose grommets.
- Pad (if fitted): torn stitching or compressed, hardened padding.
Retirement triggers: any loading event, any defect found during inspection, or any condition where the inspector cannot positively verify the belt is fit for service.
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
Miller 123N Body Belt Submittals and Documentation
123N Specification Sheet (PDF)Technical data, materials, and SKU-level UPC information. User Instruction Manual I119 (PDF)Miller I119 manual covering harnesses and body belts: use limitations and inspection criteria. Miller Fall Protection Catalog (PDF)The full Miller line: body wear, connecting devices, anchors, and rescue. Inspection Form (PDF)Printable pass/fail checklist for documented inspections.Compatible and Related Products
- Miller T4500 Titan II Non-Stretch Harness. The hi-viz Titan II general purpose harness.
- Miller H500 Construction Harness, Side D-Rings, Belt. A full body harness with integrated positioning rings.
- Guardian 10733 Suspension Trauma Strap, 4-Pack. The Guardian alternative trauma strap pack.
Belts or Harnesses for Your Crew?
Restraint, positioning, and arrest each have their own equipment rules. Confirm your tasks with us and we will make sure the right equipment ships together, based on the delivery location.
Call 863-703-4522 to talk to a fall protection specialist.
Miller Limited Lifetime Warranty
Miller Fall Protection products are covered by the Miller Limited Lifetime Warranty. In the manufacturer's words: "We sincerely believe that our fall protection equipment is the best in the world. Our products endure rigorous tests to ensure that the fall protection equipment you trust is manufactured to the highest standards. Miller fall protection products are tested to withstand normal wear and tear, but are not indestructible and can be damaged by misuse."
In the unlikely event that you should discover defects in either workmanship or materials, under the Limited Lifetime Warranty, Miller will repair or replace the product at the manufacturer's expense. If a replacement is necessary and your product is no longer available, a comparable product will be substituted. The Limited Lifetime Warranty does not apply to normal wear and tear or abusive treatment of the product.
Miller is a brand of Protective Industrial Products, Inc. (PIP). Should a product issue surface, contact Fall Protection Distributors, LLC and we will coordinate the warranty claim with the manufacturer.
