Looking for a reliable threaded screw supplier that delivers consistent quality, competitive pricing, and on-time delivery? At Shijiazhuang TJJ (founded over 20 years ago), we have been manufacturing high-strength threaded screws for ornamental iron fencing, construction, and industrial applications. Our direct-from-foundry model eliminates middlemen, giving import managers, brand owners, and wholesalers in the USA a trusted source for custom fasteners.

Industry Pain Points – Why Finding the Right Threaded Screw Supplier Matters

Import managers and sourcing agents often face these challenges when procuring threaded screws from overseas:

• Inconsistent thread quality – Undersized or out-of-tolerance threads cause assembly failures and returns.
• Long lead times – Many suppliers lack stocking programs or flexible production scheduling.
• High MOQ requirements – Small to medium orders are often rejected or priced prohibitively.
• Poor surface finishes – Flash, burrs, and uneven coatings reduce product appeal and function.
• Lack of traceability – No mill certificates or material test reports for compliance.

A 2025 survey by Fastener World indicated that 73% of US importers rated “consistent thread geometry” as their top supplier priority. Our process directly addresses these pain points.

Our Solution – Engineered Threaded Screws from China’s Leading Foundry

Shijiazhuang TJJ combines two decades of casting expertise with modern CNC threading lines. We produce threaded screws in carbon steel, stainless steel (304/316), and ductile iron, with finishes such as hot-dip galvanized, zinc-plated, or black oxide. Our quality management system is ISO 9001:2015 certified, and we comply with ASTM A307, A193, and SAE J429 standards relevant to the US market.

Technical Parameters & Compliance Standards

Every threaded screw we export to the USA follows strict dimensional and mechanical requirements. Below is a comparison of common grades we supply:

Note: Values are typical minimums. Actual product specifications should be confirmed on order.

Available Thread Types & Coatings

• Unified Coarse (UNC) and Unified Fine (UNF) – most common for US projects
• Metric coarse and fine – upon request for mixed applications
• Lag and self-drilling variants for wood-to-metal fastening
• Surface finishes: zinc plating (clear or yellow), hot-dip galvanizing, black oxide, Dacromet, or plain

OEM/ODM Design – Custom Screws for Your Unique Application

We understand that off-the-shelf threaded screws don’t always fit. Our engineering team works with brand owners and sourcing agents to develop custom lengths, head styles (hex, square, round, countersunk), and drive types (Phillips, hex socket, Torx). With a low MOQ of just 2,000 pieces for new designs, we help you test the market before scaling.

• Lead time: 15–30 days from sample approval (depending on quantity and finish)
• Sample fee: $100–$300 (deducted from first production order)
• Packaging: Bulk in pallets, kraft paper bag + carton, or private-label polybags with your brand
• Logistics: FOB Tianjin / Shanghai, CIF major US ports (Los Angeles, New York)

Trust Endorsement – What Our Customers Say

Over the last two decades, we have supplied threaded fasteners to more than 40 countries. Here are real comments from import managers and wholesalers who rely on TJJ for their threaded screw needs:

Mike T.
Owner, Midwest Fence Supply (US)

"We source over 500,000 threaded screws annually from TJJ. Their thread consistency is excellent—no more customer complaints about stripped bolts. Lead times have been reliable even during peak seasons."

Sarah L.
Import Manager, Home Decor Inc. (Canada)

"The OEM process was smooth—TJJ matched our custom head design perfectly. Their zinc plating passes salt spray tests for outdoor use. Highly recommended for importers demanding quality."

David R.
Wholesaler, Construction Fasteners Ltd. (UK)

"We switched to TJJ for our grade 5 screws and saw a 15% cost reduction without sacrificing quality. Their ISO 9001 certification gave us confidence. The after-sales team is responsive."

Juan P.
Sourcing Agent, Hardware Group (Mexico)

"TJJ helped me consolidate several fastener SKUs into one supplier. Their inventory programs reduce my warehousing costs. Excellent communication throughout the order process."

Lisa K.
Brand Owner, Deck & Rail Co. (Australia)

"The ductile iron threaded screws we ordered for balustrades arrived perfectly machined. The hot-dip galvanizing is even and thick. I appreciate that TJJ provides mill certificates with every shipment."

About the Author

James Chen
Senior Manufacturing Engineer, Shijiazhuang TJJ TRADE CO., LTD.
James has 15 years of experience in metal casting and threaded fastener production. He oversees our CNC threading department and has helped 30+ importers optimize their screw designs for cost and performance.

Clear CTA – Start Your Threaded Screw Sourcing Today

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Whether you need a standard threaded screw in bulk or a custom design for a new product line, Shijiazhuang TJJ is ready to deliver. Our team provides free quotations, sample support, and detailed technical datasheets.

Disclaimer: All product specifications, capacities, and lead times are for reference only and may vary based on order requirements. Please confirm details with our sales team before placing an order. Individual results from customer reviews may vary; we do not claim that every order will produce identical results.