25kN Screw Lock Carabiner, Heat‑Treated Cold Formed Steel for Fall Protection Work
- Model
- JS-1121
Item specifics
- Material
- Cold formed steel, Heat treated
- Item number
- JS-1121
- Net weight:
- 107g
Review
Description
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-1099 |
| Material | Cold formed steel,Heat treated |
| Packing size | Canton: 50pcs/ctn 36.5*26*12cm |
| 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-1099 Cold-Formed 25kN Carabiner Purchase Guide
1. Material & Durability
Manufactured from high-strength cold-formed steel, this 25kN carabiner is designed for professional access equipment, safety harness assemblies, fall-protection lanyards, rescue systems, and industrial connection applications.
The controlled cold-forming process helps maintain consistent body geometry, stable dimensions, and efficient material distribution across critical load-bearing areas. This provides dependable resistance to deformation, mechanical impact, and repeated connection cycles in demanding professional environments.
The black surface finish gives the connector a clean, professional appearance while helping protect the steel body against everyday wear and environmental exposure. Surface treatment specifications can be adjusted according to the customer's corrosion-resistance, appearance, and application requirements.
For B2B safety equipment manufacturers, the product offers a practical combination of mechanical strength, production consistency, professional appearance, and OEM flexibility for volume assembly programs.
2. Outdoor Environmental Adaptability
Designed for professional outdoor and industrial use, this black steel carabiner can be configured to maintain reliable functionality under exposure to rain, humidity, dust, temperature fluctuations, frequent handling, and jobsite contaminants.
A suitable black protective finish helps reduce:
Surface oxidation and rust
Abrasion from repeated connection
Surface deterioration in humid conditions
Visible wear during intensive professional use
The connector is suitable for integration into equipment used for construction, industrial maintenance, tower climbing, rope access, rescue operations, work positioning, and safety harness systems.
For coastal, high-humidity, or other corrosive environments, coating type, thickness, and corrosion-resistance performance can be specified according to the buyer's application and validation requirements.
3. Load Performance & Safety Factor
With a specified minimum breaking strength of 25kN, this cold-formed steel carabiner provides dependable load-bearing performance for professional access gear and industrial safety assemblies.
The reinforced body geometry is designed to guide the primary load toward the main load-bearing spine when correctly positioned, helping maintain stable force distribution and reduce unnecessary stress around the gate area.
Production quality can be evaluated through:
Major-axis tensile testing
Gate strength and alignment inspection
Opening and closing cycle testing
Locking-function verification, where applicable
Fatigue and permanent-deformation checks
Dimensional and surface inspection
Batch identification and traceability control
Permanent 25kN markings, OEM logos, batch codes, and traceability information can be added according to customer requirements.
The 25kN value represents the specified breaking strength and should not be interpreted as the working load limit. The appropriate safety factor and permitted working load must be determined by the equipment manufacturer according to the complete system design, intended application, applicable standards, and risk assessment.
Compliance with EN 362, ANSI Z359, or other regional requirements should only be claimed when supported by product-specific testing and valid certification.
4. Structural Craftsmanship & Detail Finishing
The carabiner is engineered for stable connection, smooth operation, and efficient integration into professional access and safety equipment. Its internal profile is designed to work with harness D-rings, lanyards, ropes, webbing assemblies, anchorage components, and compatible industrial hardware.
Key manufacturing and finishing details include:
Consistent cold-formed steel body geometry
Reinforced main spine for dependable force transfer
Smooth internal contact surfaces to reduce rope and webbing abrasion
Rounded and carefully deburred edges
Precisely controlled gate alignment and spring tension
Smooth opening, closing, and locking operation
Uniform black surface finishing for professional appearance
Permanent laser marking for strength rating and batch traceability
OEM/ODM customization may include body dimensions, gate opening, locking mechanism, black surface finish, logo marking, batch coding, packaging, and compatibility with specific harness or lanyard assemblies.
Controlled cold forming, surface finishing, load inspection, and batch-quality management help global safety equipment manufacturers achieve consistent component performance, efficient assembly, reliable traceability, and stable supply for bulk production.
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