Flat Washer For Socket Head Cap Screw & Fully Threaded | Maker

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Premium Flat Washer For Socket Head Cap Screw & Fully Threaded Fasteners — Direct from the Maker

Stop overpaying for inconsistent quality. Get factory-direct pricing, ISO-certified flat washers and fully threaded socket head cap screws that meet your exact specs — delivered in 15–25 days.

📩 Get Free Quote in 24h

✅ 10+ Years Export Expertise ✅ 30+ Countries Served ✅ Factory-Direct Value

📑 Contents: Pain Points Solution & Specs Proof & Certificates FAQ Reviews Contact

😤 Tired of Hidden Costs & Inconsistent Fastener Quality?

Every delayed shipment or failed washer adds cost. Here’s what procurement teams tell us:

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Price Volatility

“Prices change every quarter. We can’t budget accurately.” — Purchasing Manager, Germany

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Washed-Out Quality

Flat washers that crack under torque, or threads that gall. Rework costs up to 12% of order value.

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Shipping Uncertainty

Sea freight + customs delays = 3–5 weeks lost. Your production line stops.

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Certification Gaps

Suppliers without ISO/CE/FCC mean extra auditing. Non-compliance can cost $15k+ per incident.

👉 You need a partner who delivers consistent flat washers for socket head cap screws and fully threaded studs — at a fair price, with full traceability.

🔧 Engineered Flat Washers & Fully Threaded Fasteners — Built for Industrial Demands

At Handan Boen Fastener (est. 2010), we manufacture flat washer for socket head cap screw assemblies and fully threaded socket head cap screws that meet ASTM, DIN, and ISO standards. Every batch is tested, traced, and backed by a 10+ year export track record.

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Powerful Factory, Direct Control

8 production lines, 15,000 sqm facility. We control every step — from wire drawing to heat treatment and plating.

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Quality Assurance (ISO 9001:2015)

In-house lab with hardness testers, salt spray chambers, and optical comparators. 0.2% defect rate — consistently.

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High-Speed Delivery

15–25 days for standard orders. Express air freight available for urgent lines. 98% on-time delivery in 2025.

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OEM/ODM Design Support

Custom dimensions, surface treatments (zinc, black oxide, Dacromet), and special head markings. Send us your drawing.

📊 Technical Specifications — Flat Washer & Fully Threaded Cap Screws

Parameter	Flat Washer (DIN 125 / ISO 7089)	Fully Threaded Socket Head Cap Screw (DIN 912 / ISO 4762)
Material Grades	304/316 Stainless, Carbon Steel (8.8, 10.9), Brass, Copper	Alloy Steel 12.9, Stainless A2-70, A4-80, 316L
Size Range	M3 – M36 (inch sizes #4 – 1½”)	M3 – M30 (inch #6 – 1¼”)
Thread Pitch	N/A (through hole)	Coarse & Fine (0.5 – 2.0 mm)
Hardness (min.)	150–350 HV (depending on grade)	HRC 38–44 (Grade 12.9)
Surface Finish	Plain, Zinc Plated, Hot-Dip Galvanized, Black Oxide	Black Oxide, Phosphate, Zinc-Nickel, Dacromet
Certifications	ISO 9001, CE, RoHS, SVHC	ISO 9001, CE, FCC, IATF 16949 (upon request)

🏗️ Where Our Fasteners Are Used

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Agricultural Machinery

Harvesters, tractors, irrigation systems

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Automotive Assembly

Engine mounts, chassis, braking systems

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Construction & Structural

Steel frames, curtain walls, bolted joints

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Energy & Renewables

Solar trackers, wind turbine towers, substations

📐 Need a custom size or material? Submit your drawing for a free engineering review.

❓ Frequently Asked Questions

1. Do you manufacture flat washers for socket head cap screw in non-standard thicknesses?

Yes. We custom-produce flat washers for socket head cap screw in any thickness from 0.5 mm to 8 mm, in carbon steel, stainless 304/316, brass, and copper. Just provide your inner/outer diameter and tolerance requirements.

2. What are the lead times for fully threaded socket head cap screws?

Standard sizes (M3–M20) ship in 15–20 working days. Large diameters or special coatings may take 22–28 days. We offer air freight for urgent orders (3–5 days).

3. Do you provide free samples for evaluation?

Absolutely. We offer free samples (up to 5 pieces per size) for qualified buyers. You only pay shipping. Request yours via our contact form.

4. Which certificates do you hold for export to Europe and the USA?

We are ISO 9001:2015 certified, and our products carry CE, RoHS, FCC, UL, and CB compliance. We also meet ASTM F844, DIN 125, and ISO 7089 standards.

5. Can you handle OEM/ODM packaging and labeling?

Yes. We provide custom polybags, boxes, barcode labels, and even private-brand packaging. Tell us your requirements, and we’ll align with your ERP or retail compliance.

6. What is your minimum order quantity (MOQ)?

For standard flat washers and fully threaded screws, MOQ is 2,000 pcs per size. For custom designs, MOQ is 5,000 pcs. We also accept trial orders of 500 pcs for new customers.

7. How do you handle logistics and customs clearance?

We work with DHL, FedEx, Maersk, and local freight forwarders. We provide full documentation (COO, packing list, invoice, HS code 7318.22) and can manage DDP shipping for USA/EU buyers.

8. What payment terms do you offer?

We accept T/T bank transfer, L/C, PayPal (for samples), and Western Union. For established partners, we can offer 30% deposit + 70% against BL copy.

🚀 Ready to Secure Your Fastener Supply Chain?

Get a custom quote for flat washers and fully threaded socket head cap screws. Free samples for qualified buyers.

✅ No hidden fees ✅ 100% traceable batches ✅ 24h response time

📩 Get Free Quote in 24h

📞 Or call / WhatsApp: +86 15630072814 · ✉️ shuan@fastenboen.com

Hanguang Industrial Park, Yongnian District, Handan City, Hebei, China
Daily 09:00 – 17:00 (GMT+8)

✍️ Written by David Feng — Senior Application Engineer, Boen Fastener

With 14 years in fastener manufacturing and export, David has helped over 80 industrial clients in Europe and North America select the optimal flat washer and fully threaded screw specifications. He leads Boen’s technical review team and regularly contributes to fastener standards discussions.