Factory-direct bulk supply of DIN, ISO, ASTM and ANSI fasteners, including bolts, nuts, screws, threaded rods, expansion anchors and custom fasteners for distributors, importers and industrial buyers worldwide.
Direct Fastener Factory in Yongnian, China
DIN / ISO / ASTM / ANSI Standard Fasteners
OEM & Custom Fastener Manufacturing
Full Optical Sorting Inspection | PPAP Level 3
50,000+STANDARD SPECIFICATIONS
< 15 PPMDEFECT RATE CONTROL
85+COUNTRIES & REGIONS SERVED
FastBULK ORDER FULFILLMENT
INDUSTRIAL FASTENERS
Bolts, Nuts, Screws & Fasteners for Bulk Supply
Explore our range of standard and custom fasteners, including bolts, nuts, screws, threaded rods, expansion anchors and stainless steel fasteners manufactured to DIN, ISO, ASTM and ANSI standards.
Yongnian Fastener Capital · JJ Fastener Industrial Base
Direct Source Mill
ABOUT JJ FASTENER FACTORY
Fastener Manufacturer in Yongnian, China
JJ Fastener Factory is a fastener manufacturer located in Yongnian, Hebei, one of China's major fastener manufacturing centers. We manufacture and supply bolts, nuts, screws, threaded rods, stud bolts, expansion anchors and custom fasteners for distributors, importers, OEM manufacturers and industrial buyers worldwide.
Our products are available in carbon steel, alloy steel and stainless steel, with standards including DIN, ISO, ASTM, ANSI and BS. We support bulk orders, OEM production, custom drawings, surface treatments and export packaging. With multi-station cold heading, thread rolling, heat treatment, optical sorting and testing equipment, we support stable volume production and quality control for international B2B orders.
From raw material inspection to cold heading, thread rolling, heat treatment, surface finishing, quality inspection and final packing, every order follows a controlled production process.
Full Traceability: ASTM / DIN / ISO Control Plans
01 Raw Material InspectionSpectral Analysis
01. Raw Material Inspection
Prime steel coil chemical spectroscopy, metallurgical inclusion testing, and wire rod draw-annealing to ensure defect-free grain flow.
Spark Emission Lab100% Heat Batch Trace
02 Manufacturing350 pcs/min Forming
02. Cold Heading & Thread Rolling
Multi-stage high-speed cold heading formers producing continuous internal grain flow, followed by high-precision circular die thread rolling.
M3–M48 Machine LinesUnbroken Grain Lines
03 Quality Inspection< 15 PPM Laser Checked
03. Quality Inspection & Optical Sorting
100% rotary glass plate camera screening for pitch, burrs, and head cracks, paired with salt spray corrosion and tensile proof load testing.
Dual-Laser OpticalZero-Defect Standard
04 Packaging & DispatchFCL Staging Ready
04. Heat Treatment & Packaging
Continuous atmosphere quenching furnace hardening (Class 8.8-12.9) followed by robotic carton counting and seaworthy pallet wrap dispatch.
Controlled Atmos15-Day Global Port Lead
KEY INDUSTRIAL APPLICATIONS
Fasteners for Industrial Applications
Supplying certified structural bolts, vibration-proof socket screws, and corrosion-resistant fasteners across global critical infrastructure.
Tested for Severe Shear, Vibration & Marine Environments
Certified for 1,500-hour salt spray resistance to endure punishing open-ocean marine salinity and offshore wind conditions.
JJ Fastener
Rail & Transportation
Infrastructure
Target Fasteners:
High-Tensile Track Plate Screws & Heavy Pre-Stressed Anchors
Engineered with extreme cyclic fatigue strength and anti-loosening thread geometries for high-speed rail sleepers.
Custom Fastener Manufacturing
Drawings & Samples Accepted
STEP, IGES, DXF, DWG, PDF or Physical Samples
CMM Inspection Available
CUSTOM & OEM FASTENERS
Custom Fastener Manufacturer – Made to Your Drawings
Need a non-standard bolt, nut, screw or special fastener? Send us your drawing, sample or specifications. We support custom sizes, threads, head types, materials, strength grades, surface finishes and packaging for bulk production.
01
SEND DRAWING OR SAMPLE
Send us your 2D/3D drawing, PDF, sample or product specifications, including size, material, thread, strength grade, surface finish and required quantity.
02
REVIEW & CONFIRM SPECIFICATIONS
Our team reviews manufacturability, material, tolerances, tooling requirements and production method, then confirms the technical details and quotation with you.
03
SAMPLE PRODUCTION & APPROVAL
Pre-production samples can be made for dimensional, fit and performance checking before bulk production. Inspection reports can be provided when required.
04
BULK PRODUCTION & QUALITY INSPECTION
After sample approval, we proceed with bulk manufacturing, dimensional inspection, surface treatment, final quality checks and export packing according to the confirmed order requirements.
Fastener Solutions for Major Industrial Applications
We supply standard and custom fasteners for construction, automotive, machinery, energy, oil & gas and infrastructure applications, with materials, grades and finishes selected according to each project requirement.
CONSTRUCTION & STEEL STRUCTURESHIGH-STRENGTH FASTENERS
Structural Fasteners for Steel Construction
Heavy hex bolts, structural bolts, nuts, washers, threaded rods and anchor fasteners for steel structures, bridges, towers and construction projects. Available in high-strength grades with hot-dip galvanized and other corrosion-resistant finishes.
Our quality control covers raw materials, dimensions, threads, hardness, tensile strength, surface coating and final appearance. Inspection reports, material certificates and PPAP documents are available according to order requirements.
ISO 9001:2015IATF 16949:2016ISO 14001EN 10204 3.1 MTRPPAP Level 3
Require full PPAP Level 3 documentation or Mill Test Sample coupons?Complete chemical composition and dimensional CMM reports available for instant audit download.
Frequently Asked Questions About Bulk Fastener Supply
Answers to common questions from fastener distributors, importers, OEM manufacturers and industrial buyers about products, standards, MOQ, custom manufacturing, quality inspection and bulk orders.
Have specific engineering tolerance requirements, special thread pitch requests, or proprietary CAD prints? Contact our direct engineering and international export desks:
01What types of fasteners do you manufacture and supply?
We manufacture and supply a wide range of industrial fasteners, including hex bolts, flange bolts, carriage bolts, structural bolts, hex nuts, flange nuts, lock nuts, socket head cap screws, self-tapping screws, self-drilling screws, machine screws, threaded rods, stud bolts, expansion anchors, stainless steel fasteners and custom fasteners.
02What fastener standards do you supply?
We supply fasteners manufactured to common international standards including DIN, ISO, ASTM, ANSI/ASME and BS. Common products include DIN 933 hex bolts, DIN 912 socket head cap screws, DIN 985 lock nuts, DIN 975 threaded rods, ASTM A193 B7 stud bolts and ASTM A194 2H nuts. Custom and drawing-based parts are also available.
03What materials and strength grades are available?
Available materials include carbon steel, alloy steel and stainless steel. Common strength grades include 4.8, 8.8, 10.9 and 12.9, together with ASTM grades and stainless steel grades such as A2/304 and A4/316 depending on the product and application.
04What is your MOQ for bulk fastener orders?
MOQ depends on the product type, size, material, finish and whether the item is standard or custom-made. For many standard fasteners, bulk orders can start from several thousand pieces per size. Custom fasteners may require a higher MOQ because of tooling and setup costs. Send us your specification and quantity for an exact MOQ and quotation.
05Can you manufacture custom fasteners from drawings or samples?
Yes. We support custom bolts, nuts, screws, studs and special fasteners based on 2D/3D drawings, PDF files, technical specifications or physical samples. Custom options include dimensions, thread types, head styles, materials, strength grades, surface finishes and packaging.
06What surface finishes do you offer?
Common surface finishes include zinc plating, hot-dip galvanizing, black oxide, phosphate, Dacromet, Geomet and zinc-nickel coating. The recommended finish depends on the material, corrosion resistance requirement and application environment. Salt spray requirements can be discussed for specific projects.
07Do you provide samples before bulk production?
Yes. Samples can be provided for product checking, testing and approval before bulk production. For custom fasteners, sample timing depends on whether new tooling or secondary machining is required.
08What quality inspection documents can you provide?
Depending on the product and order requirements, we can provide dimensional inspection reports, material certificates, mechanical test reports, EN 10204 3.1 certificates and PPAP documentation where applicable. Please confirm the required documents before ordering.
09What is your production lead time for bulk orders?
Production lead time depends on the product, quantity, material, surface finish and packaging requirements. Standard or stocked products can usually be prepared faster, while custom fasteners and special finishes require additional production time. We confirm the expected production and dispatch date before order confirmation.
10Do you supply fasteners to distributors and importers?
Yes. We mainly serve overseas fastener distributors, importers, wholesalers, OEM manufacturers, industrial companies and project buyers. We support bulk orders, mixed fastener orders, custom packaging, OEM requirements and regular supply programs.
TECHNICAL INSIGHTS & INDUSTRY NEWS
Fastener Engineering Guides & Global Industry Updates
Authoritative metallurgical research, export standards, and smart fastener manufacturing insights directly from our engineering team.
From Inquiry to Repeat Orders: Building a Sustainable Fastener Procurement Process
Fastener procurement should involve more than comparing unit prices. It also requires standardizing specifications and quotation requirements, verifying supplier capabilities and samples, and including quality, lead-time, and traceability requirements in purchase orders. With receiving inspections, performance reviews, and rolling replenishment, businesses can reduce supply risks and gradually establish a stable, sustainable repeat-order process.
How to Calculate TCO and ROI in Fastener Procurement: Moving from Unit Price Comparison to Total Cost Decision-Making
A low unit price for fasteners does not mean low procurement cost; quality fluctuations, inventory carrying costs, delivery delays, and downtime losses can all erode the price difference. This article outlines the TCO cost items, ROI, and payback period calculation methods for fastener procurement, and uses examples to show how to compare a low-price option with a low-total-cost option.
How to Calculate Total Cost of Ownership in Fastener Procurement: From Unit Price Comparison to Full Lifecycle Management
The true cost of fastener procurement goes beyond the quoted price and also includes quality inspection, inventory and delivery, assembly rework, and subsequent maintenance. This article provides a TCO calculation framework based on the company's own data and outlines practical steps for specification standardization, supplier evaluation, category risk identification, and inquiry communication.
Standardizing the Fastener Procurement Process: From Requirements Definition to Mass-Production Review
This article outlines the complete fastener procurement process, from requirements definition, quotation inquiries and price comparisons, supplier qualification and sample confirmation, to order follow-up, incoming material acceptance, and mass-production review. By unifying technical documents, quotation bases, acceptance standards, and change records, companies can improve collaboration efficiency, reduce procurement risks, and turn experience into a mechanism for continuous improvement.
2025 Fastener Procurement Guide: Lead Times, Compliance, and Total Cost Evaluation
This article focuses on delivery stability, compliance and quality traceability, and landed total cost, outlining the key metrics and practical processes for B2B buyers evaluating fastener suppliers. By standardizing data definitions, managing standard and custom parts by category, and establishing an auditable procurement baseline, companies can reduce supply risk and shift decisions from simple price comparison to comprehensive evaluation.
Don't Compare Unit Prices Alone When Sourcing Fasteners: Identify Three Types of Hidden Costs
A low fastener quote does not necessarily mean a low total procurement cost; quality fluctuations, delivery and inventory problems, and joint failures can all lead to inspection, rework, downtime, and maintenance expenses. This article outlines three common types of hidden costs and provides a total cost evaluation checklist to help procurement teams make more cost-effective choices based on specifications, quality, delivery, and usage risks.
Send us the product name, standard, size, material, finish and required quantity. Our export sales team will provide a quotation for standard or custom fasteners.
