Founded in 2002. Operating 300+ precision screw machines and 60 Japanese STAR CNC Swiss lathes. Complete production capability covers Diameter M0.6 to M12 with lengths up to 240mm+. Monthly capacity over 800 Million pcs with optical tolerance down to ±0.01 mm.
Certified National High-Tech & Provincial SRDI Enterprise
Standard DIN, ISO, GB, JIS and full drawing-based OEM/ODM precision parts.
Core Production Range
Our core manufacturing scope covers ultra-precision miniature screws to industrial fasteners across DIN, ISO, JIS, and custom drawings.
Custom Packaging Kits
Automated counting, multi-compartment continuous strip bags, accessory kits with allen wrenches, and branded retail packaging.
Extended Stroke Header
Specialized extra-long cold heading and CNC machining for deep-mount automotive, machinery, solar frame, and industrial applications.
Precision fasteners engineered to withstand extreme vibrations, electrical grounding, and high-corrosion outdoor environments.
Micro screws (M0.6 - M2.0) for smartwatches, cameras, mobile optics, and drones.
Low-clearance thin head bolts, step pins, and anti-vibration Nylok fasteners.
Grade 8.8 / 10.9 high tensile chassis bolts, e-bike and motorcycle fasteners.
1,440-hour high salt spray zinc-nickel alloy coatings for harsh outdoor marine & solar stations.
Real on-site photography of our 11,800㎡ precision manufacturing operations in Gaobu, Dongguan.
Multi-station 4-die 4-blow heading machines and enclosed Taiwan Guoling headers with automatic stress sensing.
Precision turning & milling compound machines for complex shafts, pins, PEM standoffs, and non-standard aerospace parts.
100% full-dimension glass-plate optical screening at 800 pcs/min to guarantee zero thread burrs and zero defects.
Over 20,000 active tooling specifications. Explore by application or download 2D/3D CAD specifications.
| Series / Type | Thread Size (Diameter) | Available Materials | Standard Head Styles | Surface Plating / Coating | Tolerance | CAD / RFQ |
|---|---|---|---|---|---|---|
| Micro Precision Screws | M0.6, M0.8, M1.0, M1.2, M1.4, M2.0, M2.5 | SUS304, SUS316, 1018 Carbon Steel, Brass | Wafer, Pan, Countersunk, Torx, Phillips | Black Zinc, Bright Nickel, Passivation | ±0.01 mm | |
| Standard & 3D Printer Screws | M2.0, M2.5, M3.0, M4.0, M5.0, M6.0 | Carbon Steel 1022A/10B21, SUS304 | Socket Cap, Button Head, Flat, Thin Head | Black Oxide, Nickel, Nylok Anti-Loosening | ±0.01 mm | |
| High Strength & Outdoor Fasteners | M3.0, M4.0, M5.0, M6.0, M8.0, M10, M12 | SCM435 Alloy Steel, 10B21, SUS316L | Hex Washer Head, Torx Flange, Socket Cap | Zn-Ni (1440H), Dacromet (720H), Grade 8.8/10.9/12.9 | ±0.02 mm | |
| Extra-Long Cold-Headed Screws | M3.0 to M12 (Lengths up to 240mm+) | Carbon Steel, Stainless Steel | Flange, Hex, Countersunk with Deep Thread | Eco Zinc, Ruspert, Dacromet | ±0.02 mm | |
| Titanium Screws (Gr2 / Gr5) | M1.2 to M12 | Grade 2 Commercial Pure, Grade 5 Ti-6Al-4V | Socket Cap, Button Head, Torx Flange | Anodized Gold, Blue, Purple, Rainbow, Natural | ±0.01 mm | |
| SEMS Combination Screws | M1.4 to M8.0 | Carbon Steel, Stainless Steel | Pan, Round with Captive Flat/Spring Washers | Eco Zinc, Color Zinc, Nickel | ±0.02 mm | |
| CNC Swiss Precision Turnings | Custom Drawing (Ø0.5mm - Ø25mm) | Aluminum, Stainless Steel, Copper, Titanium | Step Pins, Shafts, Standoffs, SMT Nuts | Hard Anodizing, Silver Plating, PVD | ±0.005 mm |
Cross-reference table for global procurement engineers (DIN, ISO, JIS, ASME/ANSI standards)
| Standard Spec | Diameter (d) | Pitch (P) | Head Dia (dk) | Standard Tolerance | Jingjia Precision Limit | Available Materials |
|---|---|---|---|---|---|---|
| M0.6 (Micro) | 0.58 ~ 0.60 mm | 0.15 mm | 1.10 ~ 1.20 mm | ±0.03 mm | ±0.008 mm (CNC STAR) | SUS316 / Titanium Gr5 |
| M0.8 ~ M1.2 | 0.78 ~ 1.18 mm | 0.20 ~ 0.25 mm | 1.40 ~ 2.00 mm | ±0.04 mm | ±0.010 mm | SUS304 / Carbon 1018 |
| M1.4 ~ M2.0 | 1.38 ~ 1.98 mm | 0.30 ~ 0.40 mm | 2.40 ~ 3.50 mm | ±0.05 mm | ±0.012 mm | SUS304 / Brass C3604 |
| M2.5 ~ M4.0 | 2.48 ~ 3.98 mm | 0.45 ~ 0.70 mm | 4.50 ~ 7.00 mm | ±0.08 mm | ±0.015 mm | 10B21 Alloy / 12.9 Class |
| M5.0 ~ M8.0 | 4.98 ~ 7.98 mm | 0.80 ~ 1.25 mm | 8.50 ~ 13.0 mm | ±0.10 mm | ±0.020 mm | SCM435 / SUS316L |
| M10 ~ M12 | 9.98 ~ 11.98 mm | 1.50 ~ 1.75 mm | 16.0 ~ 18.0 mm | ±0.15 mm | ±0.025 mm | High-Tensile 10.9/12.9 |
| Custom CNC (0.5~25mm) | By Drawing | Metric / Inch | Stepped / Grooved | ±0.02 mm | ±0.005 mm (Ultra-Precision) | Aluminum / Titanium / PEEK |
White rust 96h+, Red rust 240h ~ 720h (Eco-friendly trivalent zinc / Dacromet).
100% compliant with EU RoHS 2.0, REACH, and Conflict-Free Minerals requirements.
Optical CCD sorting guarantees defect rate below 50 PPM (Automotive & 3C grade).
Mill Test Certificate (EN 10204 3.1), PPAP Level 3 available on demand.
From multi-station cold heading to complex secondary Swiss CNC turning. Over 30 engineers with 10+ years experience.
One-step continuous wire cutting, heading, diameter reduction, and forming. Eliminates secondary machining, drastically lowering unit costs for high-volume automotive and electronics fasteners.
Integrated optical sensors prevent skipped blanks and unthreaded screws from entering downstream production. Delivers flawless thread pitch stability even at 400 pcs/min.
Operating 28 CCD optical screening machines and a comprehensive physical/chemical laboratory. Full batch traceability.
Inbound incoming wire rod elemental analysis. Verifies genuine 304, 316, Grade 5 Titanium, and ensures strict RoHS/REACH halogen-free compliance.
NSS / AASS accelerated corrosion testing chambers. Verifies plating coatings up to 720 hours for Dacromet and 1,440 hours for Zinc-Nickel alloy.
Micro-hardness profile testing across core and surface carburized layers. Precision torque and tensile strength verification for Grade 8.8/10.9/12.9 bolts.
Certified under the rigorous automotive quality standard IATF 16949:2016. Every order is executed with full APQP, FMEA, Control Plan, and PPAP Level 3 documentation available upon request.
Deep-dive engineering resources, corrosion test comparisons, torque calculations, and DFM design tips curated by Jingjia's senior manufacturing team.
Engineering Whitepaper
Analyzing thread engagement depth, wafer head clearances, and anti-loosening nylon torque calculations in ultra-compact consumer electronics.
Corrosion Lab Report
Salt spray test data from Jingjia's laboratory comparing environmental hydrogen embrittlement risks, conductive grounding, and electrochemical galvanic corrosion.
Vibration Engineering
How integrated lock washers and pre-applied polyamide patches absorb high-frequency vibrational resonance on CoreXY stepper gantries.
Founded in 2002. A 24-year legacy dedicated to becoming a world-class precision fastening systems solution provider.
Dongguan Dongcheng Jingjia Hardware Factory established, starting specialized miniature screw manufacturing.
Established dedicated electroplating plant to ensure 100% controlled environmental surface treatment and salt-spray resistance.
Upgraded plant to 11,800㎡ modern industrial facility in Gaobu Town, Dongguan.
Added 60 Japanese STAR Swiss-type CNC lathes and 100+ automatic lathes for hybrid cold heading + turning components.
Recognized as Provincial "SRDI" Enterprise and National High-Tech Enterprise. Fully implemented Kingdee Cloud & Jiandaoyun digital ERP operations.
Led by senior professionals graduated from China's top tier universities (including Shanghai Jiao Tong University and Sun Yat-sen University).
Upload your 2D/3D drawing or specifications. Our engineering sales team will respond with a formal quotation and DFM analysis within 2 hours.