Wholesale ASTM F 436:2024 Inch Series Hardened Steel Washer

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ASTM F 436:2024 Inch Series Hardened Steel Washer

ASTM F 436:2024 Inch Series Hardened Steel Washer is used with high-strength structural bolting and provides high hardness and bearing capacity. The hardened steel material helps the washer maintain shape stability under large preload and reduces embedment deformation.

It is suitable for steel structures, bridges, heavy equipment, wind-turbine towers, and engineering installations using inch-series high-strength connections. When paired with high-strength bolts and nuts, it improves bearing-surface conditions and helps maintain joint preload.

Plain, galvanized, or other protective versions can be selected according to project specifications, supporting structural safety and durability in outdoor, humid, or heavy-corrosion environments.

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Dimensions unit: inch

Used in 

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1-1/8

1-1/4

d

Min.

0.281

0.344

0.406

0.469

0.531

0.625

0.688

0.813

0.938

1.063

1.188

1.375

Max.

0.313

0.376

0.438

0.501

0.563

0.657

0.72

0.845

0.97

1.126

1.251

1.438

dc

Min.

0.593

0.656

0.781

0.89

1.031

1.156

1.281

1.436

1.718

1.937

2.187

2.437

Max.

0.657

0.72

0.845

0.954

1.095

1.22

1.345

1.5

1.782

2.063

2.313

2.563

h

Round and cut

Min.

0.051

0.051

0.051

0.051

0.097

0.11

0.122

0.122

0.136

0.136

0.136

0.136

Max.

0.08

0.08

0.08

0.08

0.177

0.177

0.177

0.177

0.177

0.177

0.177

0.177

Extra thick 

Min.

/

/

/

/

0.305

0.305

0.305

0.305

0.305

0.305

0.305

0.305

Max.

/

/

/

/

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

n

Min.

0.219

0.281

0.344

0.406

0.438

0.5

0.563

0.656

0.781

0.875

1

1.094

    

Used in 

1-3/8

1-1/2

1-3/4

2

2-1/4

2-1/2

2-3/4

3

3-1/4

3-1/2

3-3/4

4

d

Min.

1.5

1.625

1.875

2.125

2.375

2.625

2.875

3.125

3.375

3.625

3.875

4.125

Max.

1.563

1.688

1.938

2.188

2.438

2.688

2.938

3.188

3.5

3.75

4

4.25

dc

Min.

2.687

2.937

3.312

3.687

3.937

4.437

4.937

5.437

5.875

6.375

6.875

7.375

Max.

2.813

3.063

3.438

3.813

4.063

4.563

5.063

5.563

6.125

6.625

7.125

7.625

h

Round and cut

Min.

0.136

0.136

0.178 ②

0.178 ②

0.24 ③

0.24 ③

0.24 ③

0.24 ③

0.24 ③

0.24 ③

0.24 ③

0.24 ③

Max.

0.177

0.177

0.28 ②

0.28 ②

0.34 ③

0.34 ③

0.34 ③

0.34 ③

0.34 ③

0.34 ③

0.34 ③

0.34 ③

Extra thick 

Min.

0.305

0.305

0.305

0.305

0.305

0.313

0.313

0.313

0.313

0.313

0.313

0.313

Max.

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

n

Min.

1.219

1.313

1.531

1.75

2

2.188

2.406

2.625

2.875

3.063

3.313

3.5

FAQ

Frequently Asked Questions

  • 1. How soon can I expect a reply after sending an inquiry?

    A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.

  • 2. What products do you mainly offer?

    A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. ASTM F 436:2024 Inch Series Hardened Steel Washer Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.

  • 3. Do you support customized production?

    A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.

  • 4. Do you produce standard parts?

    A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. ASTM F 436:2024 Inch Series Hardened Steel Washer Wholesale.

  • 5. What is your production capacity?

    A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.

  • 6. What are your payment terms?

    A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.

  • 7. How is the shipment arranged?

    A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.

Better Fastener Industry Co., Ltd.

About Us

BETTER FASTENER INDUSTRY CO., LTD.

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. ASTM F 436:2024 Inch Series Hardened Steel Washer Suppliers in China.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

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