WhatsApp

Custom Fasteners & OEM/ODM Engineering

Drawing-to-Part Precision Fastener Manufacturing: Rapid Prototyping, Custom Tooling, and Flexible Multi-Station Cold Heading. Engineered directly at China's premier Yongnian manufacturing plant.

Submit Drawing for 2H QuoteView 6-Step Engineering Protocol
END-TO-END OEM/ODM DRAWING-TO-PART WORKFLOW

6-Step Precision Fastener Engineering Protocol

From 2D/3D blueprint analysis to bulk container delivery. Direct in-house tool fabrication, high-speed multi-blow heading, controlled metallurgy, and automated dual-laser sorting guarantee zero-defect industrial supply.

IATF 16949 & ISO 9001 DIRECT MILL
Client Specification and 2D/3D CAD DFM Review
DFM TECHNICAL DESK
Response Window≤ 2 Hours
Supported FilesSTEP / DWG / PDF
NDA Protection100% Confidential
STEP 01SPECIFICATION & DFM REVIEW

Client Specification & 2D/3D CAD DFM Engineering Review

Within 2 hours of receiving CAD/PDF prints, our senior tooling engineers review cold heading feasibility, draft angles, thread runouts, and grain structure orientation to lower manufacturing costs while eliminating stress concentration.

Rapid DFM Turnaround

Comprehensive tooling feasibility, metallurgical grade analysis & raw material cost-out reports in ≤ 2h.

Mutual NDA Protection

Proprietary drawing encryption protocols ensuring full IP and commercial confidentiality.

Request DFM Feasibility Assessment
STEP 02TOOLING & DIE FABRICATION

In-House Precision Carbide Tooling & Wire EDM Die Sinking

Self-reliant tooling workshops equipped with slow-feeding CNC wire EDM and optical profile grinding machines. Fabricating sub-micron tungsten carbide punches, segmented dies, and transfer fingers on-site eliminates outside vendor delays.

DIE ACCURACY±0.005 mm
DIE MATERIALTungsten G55
TOOL FABRICATION100% In-House
Inspect Tooling Capabilities
In-House Precision Carbide Tooling and Wire EDM Die Sinking
SLOW WIRE EDM WORKSHOP
Machining Tolerance±0.005 mm
Core ToolingMulti-Segment Dies
In-Plant Lead3-5 Days Setup
Rapid Physical Prototyping and First-Article CMM Inspection
CMM METROLOGY LAB
FAI Delivery3–5 Business Days
Verification Spec100% CMM Inspected
DocumentationFull FAI / PPAP L3
STEP 03PROTOTYPING & FAI VALIDATION

Rapid Physical Prototyping & First-Article CMM Inspection

Fast-track pre-series pilot production turned around in 3–5 days. Fully verified via Zeiss 3D coordinate measuring machines (CMM), profile projectors, and metallurgical grain flow cross-sections prior to client release and bulk cold heading signoff.

Express Air Delivery

Physical initial article test coupons dispatched via DHL/FedEx with comprehensive inspection datasheets.

PPAP Level 3 Dossier

Complete control plan, process capability studies (Cpk ≥ 1.67), and dimensional layout.

Request Rapid Physical Samples
STEP 04MASS PRODUCTION & CNC MILLING

Multi-Station High-Speed Cold Heading & 5-Axis CNC Machining

Equipped with 4, 5, and 6-station multi-blow formers to mass-produce complex stepped fasteners with unbroken grain lines, complemented by 5-axis CNC machining centers for secondary cross-hole drilling, groove milling, and ultra-tight chamfers.

FORMING RANGEM2 – M36 (Max 350mm)
MACHINING TOLERANCE±0.01 mm
DAILY CAPACITY3.5M Pcs / Day
Explore Heading Capacity & Machinery
Multi-Station Cold Heading and 5-Axis Precision CNC Machining Bay
6-STATION HEADING LINES
Continuous FormingMulti-Blow Cold Heading
Secondary Milling5-Axis Precision CNC
Tensile Yield+25% Grain Strength
Continuous Atmosphere Heat Treatment and Surface Finishing Furnace
HEAT TREATMENT | 880°C MESH FURNACE
Core Hardness32–39 HRC (Gr 10.9)
Protective AtmosphereMethanol + Nitrogen Gas
Salt Spray LifeUp to 3,000h NSS
STEP 05METALLURGY & BARRIER FINISHING

Continuous Atmosphere Heat Treatment & Advanced Metallurgy Finishing

Computer-controlled carbon potential continuous mesh belt furnace lines ensure uniform 32–39 HRC core hardness with 0% decarburization. Multi-layer anti-corrosion barrier coatings include Dacromet, Geomet 500B, Hot-Dip Galvanizing, and Cr3+ Zinc-Nickel.

CORE HARDNESS32-39 HRC
SALT SPRAY1,500h - 3,000h NSS
COATING TYPEEco Cr3+ / Geomet
Check Plating & Hardness Specs
STEP 06OPTICAL SORTING & CONTAINER SHIPPING

100% Dual-Laser Optical Sorting & Certified Container Dispatch

High-speed 360° rotary glass disk laser sorting inspects 100% of fastener pitch, head eccentricity, and thread integrity to achieve <15 PPM zero-jamming automotive reliability. Packed with heavy VCI moisture barrier in seaworthy fumigated crates with EN 10204 3.1 MTR mill certificates.

DEFECT RATE< 15 PPM Zero-Defect
COMPLIANCEEN 10204 3.1 & PPAP L3
PACKAGINGVCI Anti-Corrosion Pallet
Request Container Quote & Delivery SLA
100% Dual-Laser Optical Sorting and Container Shipping
METROLOGY & 360° OPTICAL GLASS
Defect Target< 15 PPM
Sorting Speed800 pcs/min Rotary
CertificationEN 10204 3.1 & PPAP
DIRECT FACTORY INQUIRY & AUDIT

Partner with a Certified Source Mill for Your Fastener Supply

Our technical sales engineering desk directly calculates tiered container FOB/CIF pricing, reviews CAD prints, and prepares free test sample coupons within 2 business hours.

Loading form...