Product Description
Finish：Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating,Nickel plating,Zinc impregnation,ETC.
Material：Spring steel、Stainless steel
Standard ：GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC.
Non-standards：OEM is available, according to drawing or samples.
Samples：Samples are free.
Package：Wooden boxes, pallet, cartons, plastic bags, nylon bags.
Description
The ASME B18.21.3 (R2013) Double Coil Helical Spring Lock Washers are specifically designed for wood structure applications where enhanced locking capability is essential. Their double coil design provides superior load distribution and resistance to loosening caused by vibration or wood shrinkage. These washers are commonly used in timber framing, decking, and wooden structural assemblies.
Manufactured using spring steel or stainless steel, these washers are durable and corrosion-resistant, especially when finished with options such as plain, black oxide, zinc electroplating, hot dip galvanizing, copper plating, nickel plating, or zinc impregnation.
They are compliant with global standards including GB, DIN, ISO, ANSI/ASTM, BS, JIS, and OEM versions can be tailored to your specific drawings or samples. Free samples are available for evaluation and testing.
Specifications:
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Standard: ASME B18.21.3 (R2013), GB, DIN, ISO, ANSI/ASTM, BS, JIS
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Material: Spring Steel, Stainless Steel
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Finish Options: Plain, Black Oxide, Zinc Electroplating, Hot Dip Galvanizing, Copper Plating, Nickel Plating, Zinc Impregnation
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Non-standards: OEM Available (Based on Drawings or Samples)
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Samples: Free
Packaging Options:
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Wooden Boxes
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Pallets
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Cartons
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Plastic Bags
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Nylon Bags
Applications:
✔ Wood Structures & Timber Framing
✔ Deck Construction
✔ Vibration-Prone Wood Assemblies
✔ General Construction Fastening
✔ OEM Wood Hardware Solutions
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Returns and Exchanges
There are a few important things to keep in mind when returning a product you purchased.You can return unwanted items by post within 7 working days of receipt of your goods.- You have 14 calendar days to return an item from the date you received it.
- Only items that have been purchased directly from Us.
- Please ensure that the item you are returning is repackaged with all elements.
Ship your item back to Us
Firstly Print and return this Returns Form to: 30 South Park Avenue, San Francisco, CA 94108, USA Please remember to ensure that the item you are returning is repackaged with all elements. For more information, view our full Returns and Exchanges information.Related Products
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Non-standards：OEM is available, according to drawing or samples.
Samples：Samples are free.
Package：Wooden boxes, pallet, cartons, plastic bags, nylon bags.
Finish：Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating,Nickel plating,Zinc impregnation,ETC.
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Standard ：GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC.
Non-standards：OEM is available, according to drawing or samples.
Samples：Samples are free.
Package：Wooden boxes, pallet, cartons, plastic bags, nylon bags.
Finish：Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating,Nickel plating,Zinc impregnation,ETC.
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Standard ：GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC.
Non-standards：OEM is available, according to drawing or samples.
Samples：Samples are free.
Package：Wooden boxes, pallet, cartons, plastic bags, nylon bags.
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