Different Types Of Washers For Screws & Screw Washers | Factory

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Different Types of Washers For Screws & Screw Washers — Factory-Direct Quality

Stop overpaying for substandard fasteners. We deliver ISO-certified washers engineered for automotive, construction & agriculture — with 37% lower TCO vs. traditional suppliers.

📥 Get Free Quote in 24h 📋 View Technical Specs

✅ 10,000+ SKUs ready to ship | ✅ ISO 9001:2015 | ✅ 30+ countries served

📸 Handan Boen Factory — 200,000+ washers produced daily

⚡ Why Your Current Washer Supplier Is Costing You More Than You Think

Every year, procurement teams lose 12–18% of fastener budget on hidden defects, delayed shipments, and compliance rework. Here are the 5 most common pain points we hear from buyers like you:

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Inconsistent Quality & Dimensional Drift

One batch fits, the next doesn’t. ±0.3mm tolerance drift causes assembly line stoppages and rework — costing $2,700+ per hour in downtime.

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Hidden Tariff & Logistics Costs

Ocean freight volatility + unexpected customs holds. 22% of our new clients came to us after paying 30–40% more on shipping than budgeted.

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Minimum Order Quantities That Kill Flexibility

“Buy 50,000 or nothing.” That forces inventory bloat and wastes 15–25% of storage space on slow-moving SKUs.

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Certification Gaps That Block Market Entry

Missing CE, RoHS, or UL documentation means customs rejection or product recall. One automotive parts supplier lost a $1.2M contract due to incomplete washer compliance.

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Long Lead Times & Poor Communication

“Your order is on the water” — but no tracking, no ETA, no accountability. 38% of procurement managers cite poor supplier communication as their top frustration.

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One-Size-Fits-All Doesn’t Fit Your Application

Standard types of screw washers may not handle your specific torque, temperature, or corrosive environment. Customization is treated as a “special request” with huge premiums.

👉 You don’t need just any washer — you need a partner who understands your fastening system.

🔧 Boen Fastener — The Full Spectrum of Washers for Every Screw Joint

We produce 16+ types of screw washers in carbon steel, stainless steel, brass, and specialty alloys. From flat washers to serrated lock washers, every SKU is engineered to meet ASTM, DIN, ISO, and JIS standards.

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Powerful Factory, Direct Pricing

30,000m² facility, 80+ molding lines, 200+ skilled workers. Factory-direct model eliminates middlemen — you save 24–35% compared to distributors.

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Quality Assurance, Batch After Batch

ISO 9001:2015 certified. Every shipment includes Certificates of Conformance + batch test reports. Dimensional inspection via CMM, hardness testing, and salt spray (ASTM B117).

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OEM/ODM & High-Speed Delivery

Custom dimensions, materials, coatings (zinc, Dacromet, Geomet, PTFE). Lead times from 10 days for standard items. 98.6% on-time delivery record in 2025.

📐 Technical Specifications — Different Types of Washers for Screws

Washer Type	Material Options	Size Range (ID x OD)	Standards	Typical Application
Flat Washer (Type A)	Carbon steel, 304SS, 316SS	M3 – M64 (1/8″ – 2.5″)	DIN 125, ISO 7089, ASTM F436	General load distribution, automotive
Spring / Lock Washer	Spring steel, 301SS, 17-7PH	M4 – M30 (5/32″ – 1.25″)	DIN 127, ASME B18.21.1	Vibration resistance, machinery
Serrated Lock Washer	Carbon steel, 410SS, 430SS	M5 – M36 (3/16″ – 1.5″)	DIN 6798, ISO 7098	High-vibration: engines, transmissions
Belleville / Disc Spring	51CrV4, 301SS, Inconel	M6 – M100 (1/4″ – 4″)	DIN 6796, ASME B18.21.2	Thermal expansion compensation, bolted joints
Fender Washer (Large OD)	Carbon steel, 304SS, brass	M4 – M24 (5/32″ – 1″)	SAE J238, DIN 9021	Sheet metal, roofing, plastic panels
Square / Toothed Washer	Carbon steel, 410SS	M6 – M30 (1/4″ – 1.25″)	DIN 6797, DIN 6799	Electrical grounding, anti-rotation
Custom / OEM Washer	Any material + coating	Any size (tooling from 3 days)	Per customer drawing	Specialized: aerospace, chemical, medical

Note: All types of screw washers can be supplied with zinc, hot-dip galvanized, Dacromet, Geomet, or PTFE coating. Request free samples for validation.

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Automotive Assembly

Serrated lock washers for engine mounts, flat washers for chassis — PPAP Level 3 documentation available.

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Construction & Structural

Heavy-duty flat washers for steel beams, fender washers for roofing — ASTM F436 compliant.

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Agricultural Machinery

Zinc-plated spring washers for tractors, salt spray tested 240h+ for corrosive environments.

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Electrical & Solar

Toothed washers for grounding, Belleville for thermal cycling — UL 467 listed.

🏆 Trusted by 500+ Engineering Teams Worldwide

From German automotive suppliers to US construction firms — our different types of washers for screws pass the toughest audits.

+ 450 more industrial clients

✅ RoHS, REACH, & PFAS-free options available

💬 What Our Clients Say About Our Types of Screw Washers

Markus Weber Procurement Manager, Müller Automotive GmbH

“We switched to Boen for our M10 serrated lock washers. 17% cost reduction and zero dimensional rejects in 6 months. Their PPAP documentation is impeccable.”

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Sarah Chen Supply Chain Director, GreenBuild Construction (UK)

“The different types of washers for screws we needed for our solar farm project were delivered in 12 days — including custom 316SS Belleville washers. Unbeatable response time.”

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Jean-Pierre Lacroix Operations Manager, AgriParts France

“We tested 5 suppliers for salt spray performance. Boen’s zinc-plated spring washers lasted 268 hours — 40% longer than the next best. Now they’re our sole supplier.”

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Tommy Nguyen CEO, FastenerHub (US distributor)

“Their OEM capability is a game-changer. We launched a private label line of types of screw washers with Boen — tooling cost was 60% lower than our previous Chinese supplier.”

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✍️ About the Author

David Liang Senior Fastening Engineer & Technical Sales Director — Handan Boen Fastener

With 14 years in industrial fastener design and global supply chain, David has helped 200+ clients across 30 countries optimize their bolted joints. He holds a B.Eng. in Mechanical Engineering from Hebei University of Technology and is a certified ASME B18 committee contributor.

❓ Frequently Asked Questions About Types of Screw Washers

🔹 What are the different types of washers for screws and how do I choose?

The main categories include flat washers (load distribution), spring / lock washers (vibration resistance), serrated lock washers (high-grip), Belleville washers (spring preload), fender washers (large OD for soft materials), and toothed / square washers (anti-rotation & grounding). Selection depends on material, torque, temperature, and environmental exposure. Contact our engineers for a free recommendation.

🔹 Do you offer custom sizes for types of screw washers?

Yes. We provide full OEM/ODM service. Send us your drawing or sample, and we can produce any types of screw washers in custom dimensions, materials, and coatings. Tooling lead time is 3–7 days.

🔹 What is the typical lead time for standard different types of washers for screws?

Standard flat and lock washers ship in 10–15 working days. Customized items typically take 18–25 working days. We also offer express production for urgent orders (7-day turnaround).

🔹 How do you ensure quality for types of screw washers?

Every batch undergoes dimensional inspection (CMM), hardness testing (Rockwell), and salt spray test (ASTM B117). We provide Certificate of Conformance + full test report with each shipment. Our facility is ISO 9001:2015 certified.

🔹 What is the minimum order quantity (MOQ)?

For standard sizes, MOQ is 2,000 pcs per SKU. For custom items, MOQ is 5,000 pcs. We also offer sample orders (50–200 pcs) for qualification at nominal cost.

🔹 Do you ship to the USA and Europe? What about duties?

Absolutely. We ship to 30+ countries including USA, Germany, UK, France, Netherlands, and more. We provide DDP (Delivered Duty Paid) terms for hassle-free customs clearance. Our logistics team handles all paperwork.

🔹 Can I get free samples before placing a bulk order?

Yes. We offer free samples for standard washers (you pay shipping). For custom samples, a small tooling fee applies — refundable with bulk order. Request your sample kit today.

🔹 How do I place an order and what payment methods do you accept?

Simply request a quote via our form, email, or WhatsApp. We accept T/T (bank transfer), L/C (letter of credit), and PayPal (for samples). Proforma invoice + PI is issued within 4 hours.