Description
Safewaze FS377 is a full body harness with 4 D-rings (front, back, sides), quick-connect chest and tongue-buckle legs. Safewaze describes it: "The Wind & Tower Construction Harness is a fast donning, quick-adjustment versatile harness, specifically designed for tower climbing and light rescue applications. Equipped with ergonomically designed shoulder and waist pads, and lightweight aluminum D-rings and adjusters." Published figures: ANSI weight capacity 30-310 lb; OSHA capacity up to 420 lb. Standards Safewaze names: ANSI Z359.11-2021, OSHA 1926.502, OSHA 1910.140. Sizes S, M, L, XL and 2XL. Sold individually. Part numbers FS377-2X, FS377-L, FS377-M, FS377-S, FS377-XL. Part of the Safewaze Specialty Harnesses series. Ships in 1–2 business days; most orders arrive in 3–7 business days.
Safewaze FS377 specifications
| Item | Safewaze data |
|---|---|
| Part numbers | FS377-2X, FS377-L, FS377-M, FS377-S, FS377-XL |
| Series | Specialty Harnesses |
| Product type | Harnesses |
| Safewaze title | Wind & Tower Construction Harness: Alu 3D, Alu QC Chest, Alu FD, TB Legs |
| Attachment Points | 1 dorsal D-ring, 1 front D-ring, 2 side positioning D-rings |
| Weight | 5.3 lbs. (2.4 kg) |
| ANSI Weight Capacity | 30-310 lbs. (59-141 kg) |
| OSHA Weight Capacity | Up to 420 lbs. (191 kg) |
| Buckles | Quick-Connect Chest, Tongue-Buckle Legs |
| Sizes | S, M, L, XL, 2XL |
| Specialty | Tower |
| Waist Pad | Yes |
Source: Safewaze product page (fetched Nov 6 2026); Safewaze TDS FS377-TDS, page 1; the 2025 Safewaze file. Where the 2025 file and the current safewaze.com page differ, the page value is shown first and the file value in parentheses.
Ratings and standards
| Standard or rating | As published by Safewaze |
|---|---|
| ANSI/ASSP Z359.11, safety requirements for full body harnesses, 2021 edition | Named by Safewaze (safewaze.com page, TDS FS377-TDS page 1). |
| OSHA 29 CFR 1926.502, fall protection systems criteria and practices (construction) | Named by Safewaze (safewaze.com page, TDS FS377-TDS page 1). |
| OSHA 29 CFR 1910.140, personal fall protection systems (general industry) | Named by Safewaze (safewaze.com page, TDS FS377-TDS page 1). |
| Weight capacity | ANSI 30-310 lb; OSHA up to 420 lb, as Safewaze publishes it. |
Source: Safewaze product page (fetched Nov 6 2026); Safewaze TDS FS377-TDS, page 1; the 2025 Safewaze file. Ratings are as published by the manufacturer or the named standard, not a recommendation for any task; the end user decides suitability.
Documents
- Technical data sheet — Safewaze FS377-TDS (PDF)
- User manual — Safewaze 220-00125-Specialty-V2-Bi (PDF, 72 pages)
- Declaration of conformity — Safewaze SW22DC017-FS170-M-7.20.26 (PDF)
- Technical bulletin: OSHA Capacity Range — Safewaze 2024-Technical-Bulletin-OSHA-PFAS-Capacity-Range-00237 (PDF)
- Technical bulletin: Compatibility of Products — Safewaze 2024-02_2024-Technical-Bulletin-Compatibility-of-Products-00236 (PDF)
- Safewaze harness inspection checklist (PDF)
- Safewaze harness fitting and sizing chart (PDF)
Source: Safewaze product page resources and the Safewaze technical library, fetched Nov 6 2026. Each link opens the Safewaze PDF.
Features
- Dorsal D-ring
- Front D-ring
- Side positioning D-rings
- Quick torso adjusters
- Quick-connect chest
- Tongue buckle legs
- Shoulder, waist and leg pads
Source: Safewaze feature list for FS377, as published on the safewaze.com product page.
Safewaze FS377 family
| Part number | Size / length | Where |
|---|---|---|
| FS377-2X | 2XL | to be added |
| FS377-L | L | to be added |
| FS377-M | M | to be added |
| FS377-S | S | to be added |
| FS377-XL | XL | to be added |
Related Safewaze Specialty Harnesses part numbers
| Part number | Item | Key figure |
|---|---|---|
| FS77635-OD | FS77635-OD Harnesses, Oil and Gas, 1 D-Ring, Derrick Belt | ANSI 130-310 lb, OSHA up to 420 lb |
| 021-9058 | 021-9058 Harness Accessories, Removable Tower Suspension Seat | 130-310 lb |
| FS-HIVIS185 | FS-HIVIS185 Harnesses, Reflective, 1 D-Ring, Mating-Buckle Chest | ANSI 130-310 lb, OSHA up to 420 lb |
| FS77635-OD-PAD | FS77635-OD-PAD Body Belts, Replacement Derrick Belt | — |
| 021-1769–1771 | 021-1769–1771 Harnesses, 1 D-Ring, Quick-Connect Chest and Legs | ANSI 130-310 lb, OSHA up to 420 lb |
| FS227 | FS227 Harnesses, Wind and Tower, Aluminum 5 D-Rings | ANSI 130-310 lb, OSHA up to 420 lb |
| 021-1810–1815 | 021-1810–1815 Harnesses, Reflective, 1 D-Ring, Mating-Buckle Chest | ANSI 130-310 lb, OSHA up to 420 lb |
| FS227T | FS227T Harnesses, Wind and Tower, Aluminum 5 D-Rings, Removable Seat | ANSI 130-310 lb, OSHA up to 420 lb |
| FS9000-COS | FS9000-COS Harnesses, Wind and Tower, Crossover, Aluminum 3 D-Rings | ANSI 130-310 lb, OSHA up to 420 lb |
Source: Safewaze product page (fetched Nov 6 2026); Safewaze TDS FS377-TDS, page 1; the 2025 Safewaze file. Each part number links to its own page.
Safewaze FS377 questions
What are the OSHA standards for the Safewaze FS377? ANSI/ASSP Z359.11, safety requirements for full body harnesses, 2021 edition, OSHA 29 CFR 1926.502, fall protection systems criteria and practices (construction), OSHA 29 CFR 1910.140, personal fall protection systems (general industry). Ratings are as published by Safewaze; the end user decides suitability for the task.
How much weight can the Safewaze FS377 hold? ANSI 30-310 lb; OSHA up to 420 lb, as Safewaze publishes it. The ANSI figure is the ANSI/ASSP Z359 test range; the OSHA figure is the manufacturer rating under 29 CFR 1926.502.
Where are the D-rings on the Safewaze FS377? 4 D-rings: 1 dorsal D-ring, 1 front D-ring, 2 side positioning D-rings (front, back, sides). See the guide on what each D-ring is for.
What buckles does the Safewaze FS377 have? Quick-Connect Chest, Tongue-Buckle Legs, as the Safewaze title states.
What sizes does the Safewaze FS377 come in? S, M, L, XL and 2XL. The size is the part-number ending.
Guides: OSHA harness requirements · how to put on a harness · what each D-ring is for · harness inspection · harness service life · every fall protection item by type and standard.
Manufacturer item number: FS377. Technical data sheet: Safewaze TDS (PDF).
