ZhongKe Fastener — Complete Product Catalog 2026

ZhongKe Fastener Co., Ltd. is a specialized manufacturer of industrial fasteners based in Dongtai, Jiangsu — one of China's most concentrated manufacturing corridors. Since 2005, we have grown from a single-line workshop into a fully integrated operation that handles everything in-house: cold heading, CNC turning, thread rolling, heat treatment, surface finishing, and automated optical inspection.

What We Make

Hex bolts, flange bolts, carriage bolts, U-bolts
Hex nuts, lock nuts, flange nuts, cap nuts, weld nuts
Self-tapping screws, machine screws, wood screws
Flat washers, spring washers, lock washers, sealing
Blind rivets, solid rivets, drive rivets, lockbolts
Dowel pins, taper pins, cotter pins, spring pins
Custom fasteners — any drawing, any material

Standards & Certifications

ISO 9001:2015 Quality Management
DIN / ISO / GB / ANSI / BS / JIS compliance
CE Certified for EU market entry
RoHS & REACH compliant materials available
Full Material Test Certificates (MTC) with every order
PPAP Level 1-3 available on request
Third-party inspection: SGS, TUV, Bureau Veritas

Raw Material

Certified mill steel · Incoming spectro check · MTC verification

Cold Heading

Multi-station formers · High-speed thread rolling · Precision dies

Heat Treatment

Controlled-atmosphere furnaces · Quench & temper · Case hardening

Surface Finish

Zinc · HDG · Dacromet · BO · Nickel · Chrome · Passivation

QC & Sorting

Optical sorters · Manual inspection · Dimensional spot checks

Pack & Ship

Export-grade cartons · Palletizing · Full documentation

Test Type	Equipment	Standard
Tensile Strength	Universal Testing Machine (300 kN)	ISO 6892-1
Yield & Elongation	Extensometer System	ISO 6892-1
Hardness	Rockwell / Brinell / Vickers	ISO 6508
Chemical Analysis	Optical Emission Spectrometer	ASTM E415
Salt Spray (Corrosion)	Cyclic Salt Spray Chamber	ISO 9227
Coating Thickness	X-Ray Fluorescence (XRF)	ISO 2178
Torque / Preload	Digital Torque-Tension System	ISO 16047
Metallography	Inverted Metallurgical Microscope	ASTM E3
Dimensional	Optical Comparator / CMM	ISO 2768
Proof Load	Hydraulic Proof Load Tester	ISO 898-1

QC Sampling Plan

Incoming raw material: 100% spectro check
First-off approval at each production stage
In-process: hourly dimensional sampling
Post heat-treat: hardness on every batch
Final: AQL 1.0 (Normal) per ISO 2859-1
Optional: 100% sorting for critical parts

Documentation We Provide

Material Test Certificate (MTC / Mill Cert)
Certificate of Conformity (CoC)
Inspection Report (per batch)
PPAP documentation (Level 1-3)
Third-party test reports (SGS/TUV/BV)
RoHS / REACH compliance statements

Environmental Compliance

All our products can be supplied RoHS (2011/65/EU) and REACH (EC 1907/2006) compliant upon request. We maintain a database of compliant raw materials and surface treatments for EU and North American markets.

Product	Size Range	Grade	Material	Standard	Finish Options	MOQ
Hex Head Bolt	M6 – M64	8.8/10.9/12.9	Carbon/Alloy/SS	DIN 931, ISO 4014	Zinc / BO / Dacromet / HDG	1,000
Hex Head Bolt (Full Thread)	M6 – M36	8.8/10.9	Carbon/SS	DIN 933, ISO 4017	Zinc / BO / HDG	1,000
Flange Bolt	M5 – M20	8.8/10.9	Carbon/SS304	DIN 6921, GB/T 5789	Zinc / Dacromet / Chrome	1,000
Carriage Bolt	M5 – M24	4.8/8.8	Carbon/SS	DIN 603, GB/T 14	Zinc / HDG	500
Socket Head Cap Screw	M3 – M36	8.8–12.9/A2-70	Alloy/SS	DIN 912, ISO 4762	BO / Zinc / Passivated	1,000
U-Bolt	M6 – M30	4.8/8.8	Carbon/SS	DIN 3570, GB/T 2329	Zinc / HDG	200
Double-End Stud	M6 – M48	8.8/10.9/A2-70	Carbon/Alloy/SS	DIN 938-939, GB/T 897	BO / Zinc	500
Anchor Bolt	M12 – M48	35#/45#/Q235	Carbon Steel	GB/T 799	HDG / Dacromet	100
T-Bolt	M5 – M24	8.8/10.9	Carbon/SS	DIN 188, GB/T 37	BO / Zinc	1,000
Eye Bolt (Hinged)	M6 – M24	4.8/8.8	Carbon/SS	DIN 444, GB/T 798	Zinc / BO	500
Lifting Eye Bolt	M6 – M48	8.8/10.9	Alloy/SS	DIN 580, GB/T 825	Zinc / Passivated	200
Weld Bolt	M4 – M16	4.8/8.8	Carbon/SS	GB/T 902	Zinc / Copper	2,000
Square Head Bolt	M6 – M24	4.8/8.8	Carbon/SS	DIN 479	BO / Zinc	500

Product	Size Range	Grade	Material	Standard	Finish Options	MOQ
Hex Nut	M3 – M64	8/10/12	Carbon/SS/Brass	DIN 934, ISO 4032	Zinc / BO / Passivated	2,000
Nylon Insert Lock Nut	M3 – M36	8/10	Carbon/SS	DIN 985, GB/T 889	Zinc / Passivated	1,000
Flange Nut (Serrated)	M5 – M20	8/10	Carbon/SS	DIN 6923, GB/T 6177	Zinc / Dacromet	2,000
Cap Nut (Acorn)	M4 – M24	6/8	Carbon/SS	DIN 1587, GB/T 802	Zinc / Chrome / Passivated	1,000
Wing Nut	M4 – M20	4/5	Carbon/SS/Zn Alloy	DIN 315, GB/T 62	Zinc / Chrome	1,000
Self-Locking Nut (Metal)	M4 – M30	8/10	Carbon/SS	DIN 980, GB/T 6182	Zinc / Dacromet	1,000
Weld Nut	M4 – M16	8	Carbon Steel	DIN 929, GB/T 13680	Zinc	2,000
Square Nut	M3 – M12	6/8	Carbon/SS	DIN 557, GB/T 39	Plain / Zinc	3,000
T-Nut (Tee Nut)	M4 – M16	6/8	Carbon/SS	DIN 508	Zinc / BO	2,000
Round Nut	M10 – M80	8	Carbon/45#	DIN 1804, GB/T 810	BO / Zinc	500
Coupling Nut (Long Nut)	M4 – M36	6/8	Carbon/SS	DIN 6334, GB/T 109	Zinc / BO	1,000

Product	Size Range	Grade	Material	Standard	Finish Options	MOQ
Pan Head Self-Tapping	ST2.2 – ST6.3	—	Carbon/SS410	DIN 968, GB/T 845	Zinc / Passivated	5,000
CSK Self-Tapping	ST2.2 – ST6.3	—	Carbon/SS	DIN 969, GB/T 846	Zinc / BO	5,000
Pan Head Machine Screw	M2 – M12	4.8/8.8	Carbon/SS	DIN 7985, GB/T 818	Zinc / Passivated	5,000
Countersunk Machine Screw	M2 – M12	4.8/8.8	Carbon/SS	DIN 965, GB/T 819	Zinc / Passivated	5,000
Socket Set Screw	M2 – M24	12.9/A2-70	Alloy/SS	DIN 913, GB/T 77	BO / Passivated	2,000
Hex Lag Screw (Wood)	M4 – M16	—	Carbon Steel	DIN 571, GB/T 102	Zinc	3,000
Hex Flange Self-Tapping	ST3.5 – ST6.3	—	Carbon/SS	GB/T 16824	Zinc / Passivated	5,000
Shoulder Screw (Stripper Bolt)	M4 – M20	10.9/12.9	Alloy/SS	DIN 6379	BO / Passivated	500

Cat	Product	Size	Material / Grade	Standard	Finish	MOQ
Washer	Flat Washer	M2 – M64	Carbon/SS/Copper · 200/300HV	DIN 125A, ISO 7089	Zinc / Plain	5,000
Washer	Spring Lock Washer	M2 – M48	65Mn / SS304	DIN 127B, GB/T 93	BO / Zinc / Passivated	5,000
Washer	Serrated Lock Washer	M3 – M20	65Mn / Stainless	DIN 6797, GB/T 861	BO / Passivated	3,000
Washer	Belleville Spring Washer	M3 – M30	50CrVA / SS301	DIN 2093, GB/T 1972	Phosphate / Passivated	2,000
Washer	Heavy Flat Washer	M5 – M48	45# / Alloy · 300HV	DIN 6916, GB/T 97.2	Zinc / Dacromet	2,000
Washer	Sealing Washer (Bonded)	M3 – M24	Cu/Al/Rubber+Metal	JB/ZQ 4403	Plain	3,000
Rivet	Open-End Blind Rivet	2.4 – 6.4mm	Aluminum / Steel / SS	DIN 7337, GB/T 12615	Plain / Zinc	5,000
Rivet	Closed-End Blind Rivet	3.2 – 6.4mm	Aluminum / Steel / SS	GB/T 12616	Plain / Zinc	5,000
Rivet	Solid Rivet	2 – 20mm	Steel / Copper / Aluminum	DIN 660-662, GB/T 863	Plain / Zinc	2,000
Rivet	Drive Rivet	3.2 – 6.4mm	Aluminum / Steel	DIN 7338	Plain / Zinc	5,000
Rivet	Lockbolt (Huck Bolt)	4.0 – 12.0mm	Carbon / Alloy · 10.9/12.9	GB/T 26565	Zinc / Dacromet	1,000
Rivet	Peel-Type Blind Rivet	3.2 – 6.4mm	Aluminum / Stainless	GB/T 12618	Plain / Passivated	5,000

Product	Size Range	Material	Standard	Finish / Treatment	MOQ
Cylindrical Dowel Pin	1 – 50mm	Carbon / SS / Bearing Steel	DIN 7, ISO 2338	Hardened / Passivated	1,000
Taper Pin	2 – 40mm	Carbon / Stainless	DIN 1, GB/T 117	BO / Passivated	1,000
Cotter Pin (Split Pin)	0.8 – 20mm	Carbon / Stainless	DIN 94, GB/T 91	Zinc / Passivated	5,000
Spring Pin (Roll / Coiled)	1 – 20mm	65Mn / SS301	DIN 1481, GB/T 879	BO / Passivated	2,000
Clevis Pin with Hole	6 – 60mm	Carbon / Alloy / Stainless	Custom / DIN 1445	Zinc / Chrome / Hardened	200
Threaded Pin	M3 – M20	Carbon / Stainless	DIN 258, GB/T 881	BO / Passivated	1,000
Parallel Key	2×2 – 50×28mm	45# Steel / Stainless	GB/T 1096	BO / Plain	500
Locating / Fixture Pin	3 – 30mm	GCr15 / 40Cr	DIN 6325	Hardened / Ground / Zinc	500
Circlip (Internal/External)	5 – 100mm	65Mn / Stainless	DIN 471 / 472	BO / Passivated	3,000
U-Clevis Pin	3 – 25mm	Carbon / Stainless	DIN 1434	Zinc / Passivated	2,000
Shaft (Custom Machined)	6 – 200mm	Carbon / Alloy / SS	Per Drawing	Per Spec	100

Industry	Typical Products	Key Requirements
Automotive	Flange bolts, lock nuts, weld nuts	Grade 8.8–12.9, PPAP, zero PPM
Construction & Steel	Anchor bolts, heavy hex, washers	HDG, high tensile, bulk supply
Machinery & Equipment	SHCS, studs, dowel pins	Precision tolerances, alloy steel
Electrical & Electronics	Small screws, brass nuts, circlips	Conductivity, compact size
Furniture & Hardware	Wood screws, T-nuts, carriage bolts	Appearance finish, consistent color
Marine & Offshore	SS316 bolts, HDG U-bolts	Salt water corrosion resistance
Renewable Energy	Dacromet bolts, heavy washers	Long outdoor life, high strength
DIY & Aftermarket	Assortment kits, wing nuts	Retail packaging, clear labeling

Custom Fasteners

We manufacture fasteners to your exact specifications:

Non-standard dimensions & head styles
Special threads (UNF, BSW, BSF, trapezoidal)
Unusual materials (titanium, Inconel, monel)
Custom plating & coating requirements
Laser marking / branding on fastener heads
Custom packaging & labeling
Reverse engineering from samples

Send us your drawing (PDF/DWG/STEP) or sample — we review and quote within 24 hours. NDA available on request.

Custom part? Send drawing to tluo7909@gmail.com

We respond within 24 hours with DFM feedback and pricing.

Material	Grade	Tensile (MPa)	Yield (MPa)	Best For
Carbon Steel	4.8	420	340	General indoor, furniture
Carbon Steel	8.8	800	640	Automotive, machinery
Alloy Steel	10.9	1,040	940	Structural, high-stress
Alloy Steel	12.9	1,220	1,100	Critical engine joints
SS304 (A2)	A2-70	700	450	Food, marine, outdoor
SS316 (A4)	A4-70	700	450	Chemical, offshore
Brass C3604	C3604	350	200	Electrical, decorative

Finish	Corrosion	Appearance	Application
Zinc (Clear)	Moderate	Silver, bright	Indoor general
Zinc (Yellow)	Good	Gold-yellow	Auto under-hood
Hot-Dip Galvanized	Excellent	Matte gray	Outdoor, marine
Dacromet / Geomet	Excellent	Silver-gray matte	Auto, wind turbines
Black Oxide	Low (+oil)	Black, smooth	Tools, indoor
Phosphate	Low–Mod.	Dark gray matte	Pre-paint base
Nickel / Chrome	Very Good	Bright, decorative	Furniture, visible
Passivation	Excellent	Natural SS	Stainless steel

Packaging Options

Pack Type	Qty Range	Weight
Small Carton	500–2,000 pcs	5–15 kg
Standard Carton	1,000–10,000	15–25 kg
EU Pallet (1200×800)	24–48 cartons	500–800 kg
US Pallet (48×40")	24–48 cartons	500–800 kg
Bulk Bag (Jumbo)	Custom	≤1,000 kg

All cartons use export-grade corrugated board. Inner bags are sealed with desiccant for ocean freight. Every package is labeled with SKU, quantity, batch number, and production date.

Shipping Methods

Method	Transit	Best For
Sea FCL	25–35 days	Orders > 15 CBM
Sea LCL	30–40 days	Medium orders
Air Freight	5–8 days	Urgent / small
Express (DHL/FedEx)	3–5 days	Samples & < 50 kg

Payment Terms

T/T: 30% deposit, 70% before shipment
L/C at sight: For orders above $50,000
PayPal / Western Union: For samples & small orders
Flexible terms for established relationships

Q: What is your minimum order quantity?

Standard parts start at 500–1,000 pcs per size. Custom parts typically 200–500 pcs. We're flexible on trial orders for new customers — contact us with your requirements.

Q: Do you provide free samples?

Yes — free samples of standard products (you cover shipping). For custom parts, a small tooling fee applies, refundable on your first production order.

Q: How long does shipping take?

Standard parts ship in 5–7 working days; custom parts in 15–25 days. Sea freight adds 25–40 days depending on destination. Air freight is 5–8 days. Express (DHL/UPS/FedEx) is 3–5 days.

Q: Can you match my existing supplier's price?

We're competitive on quality-for-price. Send us your current spec and target price — we'll tell you honestly what we can do. Often we can match or beat pricing while providing better documentation and service.

Q: What if parts arrive defective?

We ship with full inspection reports and MTCs. In the rare case of a quality issue, we replace or refund — no questions asked. Our OTIF (on-time, in-full) rate is 98.5%.

Q: Do you offer OEM / private labeling?

Yes — custom packaging, branded labels, laser marking on fastener heads, and custom carton printing are all available.

Q: What surface treatments are available?

Zinc (clear/blue/yellow/black), Hot-dip galvanized, Dacromet/Geomet, Black oxide, Phosphate, Nickel, Chrome, Passivation (stainless), and more. Tell us your operating environment and we'll recommend the right finish.

Q: Are you RoHS / REACH compliant?

Yes — all products can be supplied RoHS (2011/65/EU) and REACH compliant upon request. We maintain a database of compliant materials and can provide compliance statements with your order.

Q: How do I get a quote?

Email tluo7909@gmail.com with: (1) product name, (2) size/spec, (3) material & grade, (4) surface finish, (5) quantity. We'll reply with pricing, lead time, and shipping options within 24 hours.

Q: Can I visit your factory?

Absolutely. We're located in Dongtai, Jiangsu — about 3 hours from Shanghai. We welcome factory visits and audits. Please schedule in advance so we can arrange transportation and prepare for your visit.

Let's Build Something Together

From a single sample to a full container — we're ready when you are.

tluo7909@gmail.com

Contact Person

Tailuo — Sales Manager
+86 138-0722-1298
WeChat / WhatsApp available
English & Chinese

Factory

No.18 Kaizhuang, Qindong Town
Dongtai City, Jiangsu, China
3 hours from Shanghai
Visits welcome — please schedule

Quick Reference

Lead time: 5–25 working days
MOQ: 200–5,000 pcs (by type)
Payment: T/T · L/C · PayPal
Certificates: MTC · PPAP · SGS · CE

ISO 9001:2015 CE Certified RoHS Compliant REACH Compliant ANSI / ASTM DIN Standard BS Standard JIS Standard MTC Included PPAP Available SGS / TUV / BV FCL & LCL Worldwide

Contents