25kN Screw Lock Carabiner, Heat‑Treated Cold Formed Steel for Fall Protection Work

group nameSteel Carabiner
Min Order1 piece
brand nameKinSafety PPE Wholesale Manufacturer
modelJS-1121
payment methodT/T, L/C, D/P D/A, MoneyGram
update timeTue, 25 Aug 2026 16:44:59 GMT

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Paramtents

Material Cold formed steel, Heat treated
Item number JS-1121
Net weight: 107g

Packging & Delivery

Min Order1 piece

Briefing

25kN screw‑lock carabiner built from heat‑treated cold‑formed steel. High strength & secure locking for fall protection, harness systems, rescue, climbing and lifting applications. Reliable heavy‑duty connector for safety harness manufacturers.

Detailed

JS-1121 25kN Screw Lock Carabiner Description

Our 25kN Heat-Treated Cold Formed Steel Screw Lock Carabiner is a professional industrial-grade connecting hardware tailor-made for fall protection systems, aerial work safety harnesses, technical rescue, commercial climbing, and light-to-medium industrial lifting applications. Engineered specifically for global safety harness manufacturers and industrial rigging suppliers, this steel carabiner abandons inferior stamping and welding craftsmanship. Adopting one-piece cold forming and integral heat treatment technology, it delivers balanced strength, stable load-bearing performance and long-term repeat usability. It serves as a standard core accessory for mass-produced safety harnesses, onsite aerial operation equipment and emergency rescue gear, fully complying with international industrial fall protection safety norms and meeting the batch matching demands of B-end manufacturers.

JS-1121 25kN Screw Lock Carabiner Parameters

Any Color (Can be customized)	Cold-Formed Carabiner
Item number	JS-1121
Material	Cold formed steel,Heat treated
Packing size	Canton: 50pcs/ctn 36.52612cm
Packing by	Mail box
Available color	Any Color (Can be customized)
Function	For construction sites, power facilities, miners, oil exploration, rock climbing and outdoor sports

Professional JS-1121 25kN Screw Lock Carabiner Purchase Guide

1. Material & Durability

Tailored for global industrial safety harness manufacturers, this 25kN screw lock carabiner is crafted from premium high-strength carbon steel, adopting professional heat-treated and cold formed integral molding technology that outperforms ordinary stamped and welded carabiners in durability and structural stability. The strict cold forging process eliminates internal pores, cracks and structural defects of the steel material, ensuring uniform overall density and excellent structural toughness, while standardized heat treatment optimizes the internal metallographic structure of the metal, greatly enhancing the product’s hardness, wear resistance and anti-fatigue performance.

Different from low-strength aluminum carabiners for casual outdoor use, this steel carabiner is built for long-term repeated industrial use. The surface is treated with high-grade anti-rust and anti-oxidation electroplating coating, which effectively resists daily friction, abrasion and oxidation aging. It maintains stable structural performance without deformation, loosening or breakage after thousands of opening and closing cycles and long-term static load bearing. For B-end manufacturers, its superior durability significantly reduces the defective rate and replacement frequency of finished fall protection equipment, lowers after-sales maintenance costs, and greatly improves the overall service life and quality consistency of safety harnesses, rescue devices and lifting matching equipment.

2. Outdoor Environmental Adaptability

This industrial-grade screw lock carabiner is professionally optimized for complex and changeable global operation scenarios, perfectly adapting to harsh working environments of high-altitude operation, field rescue, industrial hoisting and outdoor construction worldwide. It features a super wide temperature adaptation range, maintaining stable mechanical performance and structural safety in low-temperature environments of -30°C and high-temperature working scenes up to 50°C, applicable for alpine region construction, tropical high-temperature and humid operation, and all-season outdoor fall protection work.

With high-density anti-corrosion and salt spray resistant surface treatment, the product can effectively resist rain erosion, ultraviolet radiation, coastal salt fog corrosion and industrial dust pollution. It will not suffer from rusting, coating peeling, structural brittleness or performance attenuation after long-term exposure to wind, sun and humid environments. For global safety harness manufacturers, the excellent environmental adaptability enables finished products to adapt to diversified regional climatic conditions and industrial working scenarios around the world, meeting international environmental resistance standards, expanding product market applicability and enhancing core market competitiveness.

3. Load Performance & Safety Factor

Focusing on the core safety requirements of industrial fall protection, professional rescue, aerial work and light-duty hoisting, this carabiner has passed strict third-party industrial safety tests, with a certified maximum major axis breaking load of 25kN, fully complying with international mainstream safety standards for fall protection systems. Adopting a scientific D-shaped force-bearing structure, it concentrates the load on the strongest part of the carabiner body, disperses local stress, realizes uniform force bearing, and effectively avoids sudden fracture caused by stress concentration during dynamic load and impact load.

Designed with a high industrial-level safety factor, the product far exceeds the conventional working load of daily aerial work, which can effectively resist instantaneous impact tension and dynamic load pressure in rescue operation, personnel fall protection and equipment hoisting. Equipped with a precision screw lock mechanism, it provides reliable mechanical locking, completely preventing accidental opening caused by equipment vibration, collision and rope friction during operation. As a core matching component of safety harness systems and fall protection equipment, its stable load performance and ultra-high safety factor help B-end manufacturers meet CE, EN and other international certification requirements, eliminate product safety hazards, and provide reliable safety guarantees for end users’ aerial operation and rescue work.

4. Structural Craftsmanship & Detail Finishing

Adopting one-piece heat-treated cold forming craftsmanship, this carabiner abandons the traditional split welding process of ordinary products, with no welding seams, splicing gaps or weak points on the whole body. The integrated molding structure fundamentally solves the problem of weld fracture under load, with higher overall structural rigidity and deformation resistance, ensuring long-term stable load-bearing performance in industrial working conditions. The classic optimized D-shaped structure balances bearing performance and space utilization, which is highly compatible with safety harness webbing, lifting hooks, rescue ropes and various industrial connecting accessories, with strong versatility for B-end mass assembly and matching.

In terms of fine processing, the carabiner adopts a smooth keylock anti-snag design at the nose, which effectively prevents rope and webbing snagging and winding, ensuring smooth and efficient connection operation in high-altitude work. The standard gate opening size is optimized for rapid assembly and disassembly, adapting to diversified matching specifications. The precision threaded screw lock features uniform and smooth threads, flexible rotation, tight locking and no sliding teeth, realizing foolproof safety locking. All edges and corners are finely polished without burrs, which will not scratch or wear matching webbings and equipment. The standardized modular design is convenient for automated assembly production of manufacturers, effectively improving the production efficiency of finished fall protection equipment and reducing production and processing costs.

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