120 lb Heavy Duty Zip Ties
120 lb is the rating most people mean when they ask for heavy duty zip ties. It is the minimum loop tensile strength of the tie: in a controlled pull test, the locked loop should hold at least 120 lb before the strap breaks or the lock gives. That makes this class a big step up from miniature and standard ties, with a sturdier strap that tolerates firm tightening, rough handling and outdoor wind loads far better.
8" Zip Ties · Black
100 pack
8" Zip Ties · Natural
100 pack
8" Zip Ties · Black
2 × 100 pack
8" Zip Ties · Natural
2 × 100 pack
10" Zip Ties · Black
100 pack
10" Zip Ties · Natural
100 pack
10" Zip Ties · Black
2 × 100 pack
10" Zip Ties · Natural
2 × 100 pack
12" Zip Ties · Black
100 pack
12" Zip Ties · Natural
100 pack
12" Zip Ties · Black
2 × 100 pack
12" Zip Ties · Natural
2 × 100 pack
14" Zip Ties · Black
100 pack
14" Zip Ties · Natural
100 pack
14" Zip Ties · Black
2 × 100 pack
14" Zip Ties · Natural
2 × 100 pack
14" Zip Ties · Black
10 × 100 pack
14" Zip Ties · Natural
10 × 100 pack
16" Zip Ties · Black
100 pack
16" Zip Ties · Natural
100 pack
8" Zip Ties · Black
100 pack
8" Zip Ties · Natural
100 pack
8" Zip Ties · Black
2 × 100 pack
8" Zip Ties · Natural
2 × 100 pack
10" Zip Ties · Black
100 pack
10" Zip Ties · Natural
100 pack
10" Zip Ties · Black
2 × 100 pack
10" Zip Ties · Natural
2 × 100 pack
12" Zip Ties · Black
100 pack
12" Zip Ties · Natural
100 pack
12" Zip Ties · Black
2 × 100 pack
12" Zip Ties · Natural
2 × 100 pack
14" Zip Ties · Black
100 pack
14" Zip Ties · Natural
100 pack
14" Zip Ties · Black
2 × 100 pack
14" Zip Ties · Natural
2 × 100 pack
14" Zip Ties · Black
10 × 100 pack
14" Zip Ties · Natural
10 × 100 pack
16" Zip Ties · Black
100 pack
16" Zip Ties · Natural
100 pack
In our catalog the 120 lb class currently covers the 8, 10, 12, 14 and 16 inch lengths, all molded from 100% nylon PA66, in Black (UV-stabilized) and Natural Clear White. That range means you can match the tie to the bundle without changing strength: a patch-cable bundle and a chain-link post get the same rating, just a different strap length. The grid below always shows what is currently in this class, including any Stealth ties made in the USA.
The number on the package is not how much the tie can safely hold in service. Edges, vibration, UV exposure, temperature and uneven tension all eat into it, so plan working loads well below 120 lb and spread any real load across several ties.
Compare what's in stock
Typical uses
Fencing and garden structures
Fixing mesh, netting, windscreen and trellis to posts and rails, where each tie sees wind and movement over time.
Electrical and low-voltage runs
Bundling cable along strut, tray and supports on commercial and residential jobs, and securing temporary runs on job sites.
Plumbing, irrigation and pipe
Keeping pipe, PEX and irrigation tubing bundled and held to stakes, posts and supports, and closing pipe insulation.
Vehicle, trailer and equipment wiring
Securing harnesses and split loom along frames and rails, clear of heat sources and moving parts.
Facilities and shop maintenance
Everyday repairs and organization: coiling cords and hose, labeling, and holding covers and guards in place.
Is a 120 lb zip tie right for your job?
For most bundling, fencing, and wire management, 120 lb is the right class. It is strong enough that the strap rarely becomes the weak point, while lengths from 8 to 16 inch in our current range cover bundles from about 2 inches to about 4.5 inches in diameter, approximately.
Choose our 175 lb ties when you need to wrap something larger than a 16 inch tie can reach, or when the job puts more sustained stress on each tie, such as large bundles exposed to wind. Choose an 18 lb miniature tie only for light positioning in tight spaces. For anything overhead, structural or safety-related, use hardware rated for that purpose.
| Rating | Usual class name | Lengths in our current range | Typical jobs |
|---|---|---|---|
| 18 lb | Miniature | 4 in | Small wires, tags, cords, crafts |
| 120 lb | Heavy duty | 8, 10, 12, 14, 16 in | General bundling, fencing, pipe, cable runs |
| 175 lb | Extra heavy duty | 24, 36 in | Posts, lumber and pipe bundles, large duct |
Loop tensile strength is measured on a new tie under controlled conditions. Sharp edges, sunlight, vibration and cold all reduce real capacity, so design with a generous margin and use more ties rather than fewer.
Frequently asked questions
How much weight can a 120 lb zip tie hold?
120 lb is its minimum loop tensile strength in a test, not a safe working load. In real use, plan for much less, spread loads over multiple ties, and never use ties to lift or hang loads overhead.
Is 120 lb considered heavy duty?
Yes. In common usage, 120 lb ties are called heavy duty and 175 lb ties extra heavy duty, while lighter classes are called miniature, intermediate or standard.
Does a longer 120 lb zip tie hold more?
No. Every tie in the class has the same minimum rating. Length determines how large a bundle the tie can close around, not how much force it withstands.
Should I use 120 lb or 175 lb zip ties?
120 lb suits most bundling, fencing and wire management up to about 4.5 inches across. Use 175 lb for larger bundles and objects, or where each tie will see more sustained stress.
Buying for a crew, a store or a project?
Business accounts get price-list pricing with quantity breaks, net terms once approved, tax-exempt purchasing with a resale certificate, and team logins.
Related guides
Zip ties by industry
- Cable Ties for Electrical Contractors4-inch and 8-inch ties for panel dressing and device wiring
- Cable Ties for FencingBlack UV-stabilized ties only, since fences live in full sun
- Zip Ties for Construction and Jobsite UseBlack UV-stabilized ties for anything outdoors or long-term
- Cable Ties for Automotive UseBlack ties for anything under the car or in the engine bay