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Seastrom Manufacturing Co., Inc.
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  • Catalog & Military Washers
    • Standard Flat Washers
    • Military Washers
    • ANSI Standard Washers
    • Pre-Packaged Washers
    • Centering Washers
    • Clipped Washers
    • Countersunk Washers
    • C-Shaped Washers
    • D-Shaped Washers
    • D-Shaped Hole Washers
    • Flattened Shaft Washers
    • Key Washers
    • Laminated Washers
    • Lock Washers
    • Notch Washers
    • Rectangular Washers
    • Retaining Washers
    • Retention Washers
    • Shoulder Washers
    • Split Washers
    • Spherical Washers
    • Spring Washers
    • Square Washers
    • Square Hole Washers
    • Tab Washers
    • Terminal Cup Washers
  • Assembly Hardware
    • Bus Bars
    • Clamps & Brackets
    • Expansion Plugs
    • Formed Nuts
    • Ground Straps
    • Hiram Jones Terminals
    • Jumpers
    • Push-On Nuts
    • Retaining Rings
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    • Solid State Insulators
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    • Tags
  • Military Hardware
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  • Resources
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    • How to Specify Special Parts
  • About Us
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Round Flat Washers
5600, 5602: Fibre Round Flat Washer
5606, 5610: Nylon Round Flat Washer
5611: Kapton Round Flat Washer
5612: PTFE Round Flat Washer
5613: Neoprene Round Flat Washer
5614: Acetal Round Flat Washer
5615: Nylatron Round Flat Washer
5617: Polyethylene Round Flat Washer
5619: PVC Round Flat Washer
5620: Phenolic Round Flat Washer
5621: Fiberglass Round Flat Washer
5622: Mylar Round Flat Washer
5700, 5702: Steel Round Flat Washer
5624: Mica Round Flat Washer
5706: Titanium Round Flat Washer
5710: Stainless Steel Round Flat Washer
5711: Stainless Steel 316 Round Flat Washer
5712: Aluminum Round Flat Washer
5714: Brass Round Flat Washer
5716: Copper Round Flat Washer
5718: Beryllium Copper Round Flat Washer
5720: Phosphor Bronze Round Flat Washer

Contact Us

  • Request a Quote
  • call1-800-634-2356
  • emailinfo@seastrom-mfg.com
  • location_on456 Seastrom St, Twin Falls, ID 83301

Company Info

  • About Us
  • Industries Served
  • Credit Application
  • Certification and Compliance
  • Terms and Conditions

Product Directory

  • Round Washers & Shims, ANSI Washers
  • Specialty Washers
  • Military Washers
  • Pre-packaged Washers
  • Assembly Hardware
  • Military Hardware

Purely Custom

  • Bike Fitting
  • Bike Accessories

Subsidiaries

  • Seastrom Stamping
  • Acacia Machining
  • Precision Metalforming Association
  • Precision Machined Products Association
  • ISO 100 Compliant
  • AS 9100 Compliant
  • Environmental Statement
  • Made in USA
  • ROHS Compliant
  • DFARS Compliant
  • Federal Firearms License
  • ITAR Compliant
  • Cage Code
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