Global custom lengthening screw specialist
🔩 1990 mm ultimate length | 12.9 true strength within 500 mm | 300 h salt spray protection
🚚On the day of Rush Order | ISO Certification Guarantee | State Grid Comac certification scheme
Product Presentation
Have you encountered any of these problems?
The length of the screw is limited
Most factories are stuck at the 200-300 mm length limit and refuse to accept orders for long screws!
Surface treatment and strength not up to standard
Long screws easy to salt spray not up to standard (< 48 hours) , strength virtual standard, rough surface treatment!
Bending deformation of long screws
When the length is more than 500 mm, the bending rate of the screw is more than 60% , which affects the assembly accuracy!
Unstable quality, delay in delivery
Extended screw production cycle of up to 30 days, quality fluctuations!
Our solution
1990 mm ultra-long customization
Diameter cover M2-M12, copper/aluminum/titanium/stainless steel full material support
12.9 military strength
Exclusive fixture heat treatment technology, breaking through 500 mm non-bending limit
300h salt fog protection
Support chrome plating/zinc nickel alloy/dacromet and other 12 high-end surface treatment
Quality inspection of the whole process
SGS/ROHS certification + raw materials/hardness/salt spray test report
Step by step delivery time
Urgent order 3 days into production | conventional 7 days into production | complete 15 days delivery
Customize the solution according to your needs?
Why Us?
🔧Long Screw Revolution: 90% reduction in connection points
Pain Points:
Multi-point Assembly time-consuming error-prone!
Our solution
►Ultra-long screw through-type fixed
✅One screw instead of 3-10 screws
✅50% reduction in installation time (37% reduction in man-hours of measured wind power equipment)
✅Avoid the risk of multi-point loosening
🛠️Design for disassembly and halve the cost of maintenance
Pain Points:
welding/adhesive maintenance = demolition and reconstruction!
Our solution
► threaded modular solutions
✅save 40% of total cost than welding
✅No cutting equipment is required for maintenance (e. g. 200% efficiency improvement in energy storage box maintenance)
✅Supports 50 + repeated disassemblys (300h salt spray for thread durability)
Application scenarios
Motor system
Structural parts of battery
New Energy Storage System
High precision engraving machine
Hydraulic mechanism
Wind power equipment
Switches for industrial electrical appliances
Induction heating system
Our certificate
Our Happy Clients!
Customize the process
01
Pre-communication of requirements
✅ Lock in 4 dimensions: size/material/surface finish/quantity ⚠️ Pit avoidance tip: identify design conflicts in advance (e. g. over-lengthened threads)
02
Design cost optimization
🔥 Province-based black science and technology ① thread reduction control (10-15mm golden range)→ cost reduction 15% + ② small diameter instead of large diameter → saving 20% + weight loss 17% ③ pre-confirmation of clamping line →0 cost dispute
03
Transparent pricing
💰10-minute speed quote Cover: mould fee/wire fee/processing fee (add early warning of this item-RRB-
04
Signing up for production
📝 Full start + double signature of drawings ⏱️ Die/wire complete set →72 hours on the machine
04
Signing up for production
📝 Full start + double signature of drawings ⏱️ Die/wire complete set →72 hours on the machine
05
Full Link quality control
🔍 Three lines of defense First Inspection →30-minute inspection → full inspection of shipment
06
Worry-free delivery
🚚 Bend proof packaging + inspection report 📦 Protection of aviation wooden cases | with 8 test reports
Frequently Asked Questions
Triple military grade quality control system
1 whole process quality inspection: first piece inspection + 30 minutes inspection + full inspection of shipment
299.8% guaranteed yield (industry average < 90%)
3 support SGS/ROHS certification, provide salt spray 300h report + 12.9 hardness report + hydrogen embrittlement test and other 8 test documents
We adopt a stepped extreme speed response
1. Expedited orders: lead time ≤3 days, complete lead time 7-10 days.
2. Regular orders: lead time ≤7 days, complete lead time 10-15 days.
(note: 1990 mm extra-long parts are also applicable when all dies/materials are available)
The world’s only breakthrough technology
1 length: measured support 1-1990 mm (industry upper limit 300 mm)
2 anti-bending: Exclusive fixture heat treatment, 500 mm below 0 bending, long pieces of straightening ± 0.05 mm
3 material: stainless steel/iron/copper/aluminum/titanium full support
Full coverage of authentication matrix
1 quality system: ISO9001 + IATF16949
Environmental certification: SGS + ROHS + REACH
3 strength certification: 12.9 hardness CNAS test report
Behind the premium is a cost revolution
1. Material loss: peer practice > 10% , our breakthrough < 0.2% (full stop defective)
2. Rework rate: peer practice 30% (bending deformation) , our breakthrough 0 rework (exclusive bending technology)
3. Salt spray cost: peer practice 48h namely Rust, our breakthrough 300h maintenance-free (military grade coating)
The Math: 15% higher purchase cost, 300% longer life + 60% lower maintenance cost