Seastrom logo menu
close
Home Search Request a Quote Custom Capabilities Standard Hardware Military Hardware Standard Washers Engineering Resources About Us Contact Us Customer Service Login Register View Cart Checkout
Seastrom Manufacturing Co., Inc.
LOGIN | REGISTER
1-800-634-2356
shopping_cart
View Cart Checkout
  • 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
    • Solder Lugs
    • Solid State Insulators
    • Spacers
    • Spring Clips
    • Tags
  • Military Hardware
    • AN
    • M
    • MS
    • NAS
    • Aircraft/Aerospace Industry Approved
  • Precision Stamping
  • CNC Machining
  • Industries
    • Defense
    • Aerospace
    • Electronics
    • Communications
    • Energy
    • Medical
    • Agriculture
    • Machinery
    • Firearms
  • Resources
    • Certification and Compliance
    • Terms & Conditions
    • Environmental Statement
    • Credit Application
    • Seastrom FAQs
    • Engineering Data
    • Engineering Reference Handbook
    • Product Directory
    • How to Specify Special Parts
  • About Us
    • Contact Us
    • About Us
    • Testimonials
    • Careers
    • Survey
Round Flat Washers / 5712: Aluminum Flat Washers
Washer Print View engineering specs
Download Catalog for Round Flat Washers / 5712: Aluminum Round Flat Washer Don't see what you need? REQUEST A QUOTE
Aluminum Round Flat Washer, Aluminum Steel Flat Washer

  • An aluminum flat washer is a flat disc with a centrally located hole. Aluminum round flat washers are used to provide a bearing surface to minimize surface wear. They also evenly distribute a fastener’s load to minimize surface deformation from fastener tightening or can cover large clearance holes. Aluminum is 1/3 the weight of steel with good electrical and heat conductivity.

  • Use our Quick Search below to source aluminum round flat washers from our wide selection of options.

  • Material: Aluminum

  • Available Industry Standard Thicknesses for Aluminum: .016, .020, .025, .032, .040, .050, .063, .071, .080, .090, .100, .125

  • Customary Finishes: Anodized (A), Black oxide (BO), Cadmium Type I & II (C1 & C2), Chem Film (CF), Tin Dip (T2) (other finishes also available)

  • Adhesive Backing available

Not all thicknesses nor finishes are listed in our catalog for every part number. If you require a different thickness, finish or size, please submit a quote.

If you need additional information on your particular aluminum flat washer application click on one of the links below:
     View our material & finish specification sheets
     View non-metallic material characteristic information
     View finish characteristic information

Look to Seastrom for your CNC Turning and Milling needs
Send us your requirements today!


Quick Search

Material
Min ID
Max ID
Min OD
Max OD
search icon Click here to revise your search
information icon Click here to request a custom quote
Compare Qty Breaks
Click on the Column Name to re-sort data.
Dimensions in Inches
123456
Product NumberIDODTScrew SizeFinishMaterialStockLeadtimePrice @ 1000Get Pricing
5712-150-100.0370.0780.010000 Aluminum1550In Stock - Ready To Ship!0.3737Price
5712-151-160.0500.1090.01600 Aluminum03-4 Weeks0.3726Price
5712-151-320.0500.1090.03200 Aluminum03-4 Weeks0.3896Price
5712-1-160.0620.2180.0160 Aluminum03-4 Weeks0.3765Price
5712-1-320.0620.2180.0320 Aluminum03-4 Weeks0.4300Price
5712-1-630.0620.2180.0630 Aluminum03-4 Weeks Price
5712-152-100.0630.1560.0100 Aluminum48In Stock - Ready To Ship!0.3777Price
5712-152-160.0630.1560.0160 Aluminum728In Stock - Ready To Ship!0.3743Price
5712-152-200.0630.1560.0200 Aluminum03-4 Weeks0.4853Price
5712-288-100.0640.1100.0100 Aluminum5306In Stock - Ready To Ship!0.3754Price
5712-153-160.0640.1250.0160 Aluminum03-4 Weeks0.3732Price
5712-153-200.0640.1250.0200 Aluminum2280In Stock - Ready To Ship!0.3344Price
5712-153-400.0640.1250.0400 Aluminum03-4 Weeks0.3903Price
5712-246-320.0640.1870.0320 Aluminum354In Stock - Ready To Ship!0.3687Price
5712-489-100.0670.2190.010  Aluminum7038In Stock - Ready To Ship!0.3810Price
5712-2-200.0670.3750.0200 Aluminum03-4 Weeks0.4933Price
5712-3-160.0680.1040.0160 Aluminum03-4 Weeks Price
5712-3-200.0680.1040.0200 Aluminum6445In Stock - Ready To Ship!0.3654Price
5712-3-320.0680.1040.0320 Aluminum03-4 Weeks0.3895Price
5712-3-500.0680.1040.0500 Aluminum03-4 Weeks Price
5712-0N-250.0680.1250.0250 Aluminum03-4 Weeks Price
5712-4-200.0680.1300.0200 Aluminum712In Stock - Ready To Ship!0.3471Price
5712-4-250.0680.1300.0250 Aluminum960In Stock - Ready To Ship!0.3439Price
5712-4-320.0680.1300.0320 Aluminum498In Stock - Ready To Ship!0.3898Price
5712-289-160.0680.1560.0160 Aluminum03-4 Weeks0.3743Price
5712-289-200.0680.1560.0200 Aluminum03-4 Weeks0.4853Price
5712-0R-250.0680.1880.0250 Aluminum2564In Stock - Ready To Ship!0.3446Price
5712-0W-250.0680.2500.0250 Aluminum03-4 Weeks Price
5712-5-200.0750.1560.0200 Aluminum03-4 Weeks0.4853Price
5712-5-250.0750.1560.0250 Aluminum03-4 Weeks0.4832Price
5712-5-320.0750.1560.0320 Aluminum479In Stock - Ready To Ship!0.3964Price
5712-5-630.0750.1560.0630 Aluminum0Call for Delivery Price
5712-154-200.0780.1870.0200 Aluminum03-4 Weeks0.4860Price
5712-154-320.0780.1870.0320 Aluminum03-4 Weeks0.3679Price
5712-155-320.0780.3750.0320 Aluminum161In Stock - Ready To Ship!0.4328Price
5712-1.6M-600.0800.1910.025  Aluminum03-4 Weeks0.4836Price
5712-290-200.0830.2500.0201 Aluminum03-4 Weeks0.4874Price
5712-1N-250.0840.1560.0251 Aluminum03-4 Weeks Price
5712-1R-250.0840.2190.0251 Aluminum105In Stock - Ready To Ship! Price
5712-1W-320.0840.2810.0321 Aluminum03-4 Weeks Price
5712-156-320.0890.1870.0322 Aluminum1855In Stock - Ready To Ship!0.3687Price
5712-156-900.0890.1870.0902 Aluminum16In Stock - Ready To Ship!1.6554Price
5712-463-100.0900.2000.0102 Aluminum1785In Stock - Ready To Ship!0.3800Price
5712-6-160.0930.1580.0162 Aluminum03-4 Weeks0.3744Price
5712-6-200.0930.1580.0202 Aluminum6670In Stock - Ready To Ship!0.3463Price
5712-6-320.0930.1580.0322 Aluminum3425In Stock - Ready To Ship!0.3684Price
5712-6-400.0930.1580.0402 Aluminum03-4 Weeks Price
5712-6-450.0930.1580.0452 Aluminum011-12 Weeks1.6710Price
5712-291-100.0930.2500.0102 Aluminum38460In Stock - Ready To Ship!0.3826Price
5712-291-160.0930.2500.0162 Aluminum03-4 Weeks0.3777Price
5712-292-100.0940.1350.0102 Aluminum03-4 Weeks0.3767Price
5712-7-160.0940.1540.0162 Aluminum197In Stock - Ready To Ship!0.3742Price
5712-7-320.0940.1540.0322 Aluminum9825In Stock - Ready To Ship!0.3900Price
5712-7-400.0940.1540.0402 Aluminum03-4 Weeks Price
5712-2N-250.0940.1880.0252 Aluminum03-4 Weeks Price
5712-293-100.0940.2500.0102 Aluminum03-4 Weeks0.3826Price
5712-293-200.0940.2500.0202 Aluminum5506In Stock - Ready To Ship!0.3484Price
5712-2R-320.0940.2500.0322 Aluminum38205In Stock - Ready To Ship! Price
5712-247-320.0940.2740.0322 Aluminum03-4 Weeks0.4308Price
5712-2W-320.0940.3440.0322 Aluminum03-4 Weeks Price
5712-157-120.0940.3750.0122 Aluminum03-4 Weeks0.3881Price
5712-157-320.0940.3750.0322 Aluminum1050In Stock - Ready To Ship!0.4328Price
5712-248-100.0950.3180.0102 Aluminum03-4 Weeks0.3862Price
5712-158-160.0960.1670.0162 Aluminum307In Stock - Ready To Ship!0.3747Price
5712-158-16-A3-BLK0.0960.1670.0162Anodized Type III BlackAluminum7In Stock - Ready To Ship!0.2834Price
5712-158-16-CF0.0960.1670.0162Chem FilmAluminum70In Stock - Ready To Ship! Price
5712-158-320.0960.1670.0322 Aluminum400In Stock - Ready To Ship!0.3685Price
5712-158-630.0960.1670.0632 Aluminum237In Stock - Ready To Ship!1.6346Price
5712-158-63-CF0.0960.1670.0632Chem FilmAluminum7In Stock - Ready To Ship! Price
5712-294-160.0980.1500.0162 Aluminum523In Stock - Ready To Ship!0.3741Price
5712-8-100.0990.2550.0102 Aluminum11246In Stock - Ready To Ship!0.3829Price
5712-8-160.0990.2550.0162 Aluminum16405In Stock - Ready To Ship!0.3779Price
5712-8-200.0990.2550.0202 Aluminum1513In Stock - Ready To Ship!0.4875Price
5712-8-320.0990.2550.0322 Aluminum525In Stock - Ready To Ship!0.4304Price
5712-8-900.0990.2550.0902 Aluminum03-4 Weeks Price
5712-9-250.1000.2470.0252 Aluminum03-4 Weeks0.4843Price
5712-9-320.1000.2470.0322 Aluminum2614In Stock - Ready To Ship!0.4304Price
5712-9-500.1000.2470.0502 Aluminum931In Stock - Ready To Ship!0.4319Price
5712-9-630.1000.2470.0632 Aluminum03-4 Weeks0.4329Price
5712-295-500.1000.3600.0502 Aluminum03-4 Weeks0.4358Price
5712-507-630.1000.6250.063  Aluminum8558In Stock - Ready To Ship!0.4532Price
5712-2M-750.1010.2300.032  Aluminum03-4 Weeks0.4301Price
5712-10-320.1010.5060.0322 Aluminum03-4 Weeks0.4362Price
5712-3.5M-1200.1020.3870.050  Aluminum03-4 Weeks0.4363Price
5712-11-160.1050.2550.0163 Aluminum03-4 Weeks0.3779Price
5712-11-320.1050.2550.0323 Aluminum03-4 Weeks0.4304Price
5712-11-630.1050.2550.0633 Aluminum03-4 Weeks Price
5712-296-200.1050.6750.0203 Aluminum03-4 Weeks0.5155Price
5712-297-250.1060.2160.0253 Aluminum03-4 Weeks0.4839Price
5712-12-70.1070.1850.0073 Aluminum03-4 Weeks Price
5712-12-100.1070.1850.0103 Aluminum03-4 Weeks0.3793Price
5712-12-160.1070.1850.0163 Aluminum03-4 Weeks0.3754Price
5712-12-200.1070.1850.0203 Aluminum03-4 Weeks0.4859Price
5712-12-320.1070.1850.0323 Aluminum10865In Stock - Ready To Ship!0.3686Price
5712-12-400.1070.1850.0403 Aluminum03-4 Weeks Price
5712-12-630.1070.1850.0633 Aluminum03-4 Weeks Price
5712-12-900.1070.1850.0903 Aluminum03-4 Weeks Price
5712-12-1500.1070.1850.1503 Aluminum485In Stock - Ready To Ship! Price
5712-3N-250.1090.2190.0253 Aluminum03-4 Weeks Price
5712-3R-320.1090.3120.0323 Aluminum03-4 Weeks Price
5712-3W-400.1090.4060.0403 Aluminum03-4 Weeks Price
5712-13-160.1130.2500.0163 Aluminum849In Stock - Ready To Ship!0.3777Price
5712-13-200.1130.2500.0203 Aluminum7575In Stock - Ready To Ship!0.3484Price
5712-13-320.1130.2500.0323 Aluminum03-4 Weeks0.4304Price
5712-13-630.1130.2500.0633 Aluminum112In Stock - Ready To Ship!0.4330Price
5712-13-960.1130.2500.0963 Aluminum03-4 Weeks Price
5712-298-250.1140.5000.0253 Aluminum287In Stock - Ready To Ship!0.3534Price
5712-298-630.1140.5000.0633 Aluminum03-4 Weeks0.4453Price
5712-443-160.1160.2230.0163 Aluminum03-4 Weeks0.3767Price
5712-299-250.1190.2810.0253 Aluminum03-4 Weeks0.4851Price
5712-299-500.1190.2810.0503 Aluminum604In Stock - Ready To Ship!0.4327Price
5712-300-400.1190.7030.0403 Aluminum2398In Stock - Ready To Ship!0.4502Price
5712-14-160.1200.2140.0164 Aluminum98973In Stock - Ready To Ship!0.3764Price
5712-14-200.1200.2140.0204 Aluminum1077In Stock - Ready To Ship!0.3476Price
5712-14-320.1200.2140.0324 Aluminum14298In Stock - Ready To Ship!0.4299Price
5712-14-400.1200.2140.0404 Aluminum387In Stock - Ready To Ship!0.4305Price
5712-301-630.1200.2500.0634 Aluminum03-4 Weeks Price
5712-301-900.1200.2500.0904 Aluminum1415In Stock - Ready To Ship!2.0051Price
5712-15-320.1210.2770.0324 Aluminum03-4 Weeks0.4308Price
5712-15-630.1210.2770.0634 Aluminum03-4 Weeks0.4338Price
5712-15-1000.1210.2770.1004 Aluminum1569In Stock - Ready To Ship!1.5979Price
5712-2.5M-750.1210.3080.032  Aluminum03-4 Weeks0.4313Price
5712-16-160.1220.2280.0164 Aluminum761In Stock - Ready To Ship!0.3769Price
5712-16-16-CF0.1220.2280.0164Chem FilmAluminum15In Stock - Ready To Ship! Price
5712-16-320.1220.2280.0324 Aluminum540In Stock - Ready To Ship!0.4301Price
5712-16-32-CF0.1220.2280.0324Chem FilmAluminum648In Stock - Ready To Ship! Price
5712-16-500.1220.2280.0504 Aluminum526In Stock - Ready To Ship!0.4314Price
5712-159-160.1240.2060.0164 Aluminum1114In Stock - Ready To Ship!0.3761Price
5712-4N-320.1250.2500.0324 Aluminum03-4 Weeks Price
5712-160-200.1250.2550.0204 Aluminum954In Stock - Ready To Ship!0.3485Price
5712-160-320.1250.2550.0324 Aluminum1037In Stock - Ready To Ship!0.4304Price
5712-160-500.1250.2550.0504 Aluminum2006In Stock - Ready To Ship!0.4320Price
5712-160-630.1250.2550.0634 Aluminum308In Stock - Ready To Ship!0.4330Price
5712-18-160.1250.3170.0164 Aluminum03-4 Weeks0.3801Price
5712-18-320.1250.3170.0324 Aluminum9169In Stock - Ready To Ship!0.3814Price
5712-18-630.1250.3170.0634 Aluminum03-4 Weeks0.4359Price
5712-18-900.1250.3170.0904 Aluminum03-4 Weeks Price
5712-18-1000.1250.3170.1004 Aluminum4826In Stock - Ready To Ship!0.4697Price
5712-17-100.1250.3750.0104 Aluminum03-4 Weeks0.3891Price
5712-17-320.1250.3750.0324 Aluminum7588In Stock - Ready To Ship!0.4328Price
5712-17-400.1250.3750.0404 Aluminum310In Stock - Ready To Ship!0.4345Price
5712-4R-400.1250.3750.0404 Aluminum13757In Stock - Ready To Ship! Price
5712-17-500.1250.3750.0504 Aluminum1114In Stock - Ready To Ship!0.4361Price
5712-17-630.1250.3750.0634 Aluminum03-4 Weeks0.4382Price
5712-17-710.1250.3750.0714 Aluminum2993In Stock - Ready To Ship!0.4396Price
5712-17-900.1250.3750.0904 Aluminum20055In Stock - Ready To Ship!0.4440Price
5712-17-1250.1250.3750.1254 Aluminum1804In Stock - Ready To Ship!0.3951Price
5712-4W-400.1250.4380.0404 Aluminum03-4 Weeks Price
5712-19-100.1270.3090.0104 Aluminum50In Stock - Ready To Ship!0.3857Price
5712-19-160.1270.3090.0164 Aluminum390In Stock - Ready To Ship!0.3798Price
5712-19-200.1270.3090.0204 Aluminum5305In Stock - Ready To Ship!0.4899Price
5712-19-250.1270.3090.0254 Aluminum03-4 Weeks0.3469Price
5712-19-320.1270.3090.0324 Aluminum03-4 Weeks0.4313Price
5712-249-100.1270.3200.0104 Aluminum03-4 Weeks0.3863Price
5712-161-160.1280.3130.0164 Aluminum03-4 Weeks0.3800Price
5712-161-320.1280.3130.0324 Aluminum03-4 Weeks0.4314Price
5712-161-630.1280.3130.0634 Aluminum03-4 Weeks Price
5712-162-200.1280.5000.0204 Aluminum03-4 Weeks0.5013Price
5712-162-320.1280.5000.0324 Aluminum4924In Stock - Ready To Ship!0.4361Price
5712-162-630.1280.5000.0634 Aluminum03-4 Weeks0.4453Price
5712-20-200.1280.7480.0204 Aluminum03-4 Weeks0.5226Price
5712-21-160.1330.2430.0164 Aluminum2431In Stock - Ready To Ship!0.3775Price
5712-21-200.1330.2430.0204 Aluminum03-4 Weeks0.4872Price
5712-21-320.1330.2430.0324 Aluminum03-4 Weeks0.4304Price
5712-21-400.1330.2430.0404 Aluminum824In Stock - Ready To Ship!0.4311Price
5712-21-630.1330.2430.0634 Aluminum1137In Stock - Ready To Ship!0.4583Price
5712-22-320.1330.2550.0324 Aluminum1190In Stock - Ready To Ship!0.4304Price
5712-22-630.1330.2550.0634 Aluminum519In Stock - Ready To Ship!0.4585Price
5712-250-160.1360.3200.0165 Aluminum03-4 Weeks0.3802Price
5712-250-320.1360.3200.0325 Aluminum03-4 Weeks0.4318Price
5712-23-320.1370.7070.0325 Aluminum6740In Stock - Ready To Ship!0.3950Price
5712-488-1000.1410.2500.100  Aluminum03-4 Weeks Price
5712-302-320.1410.2810.0325 Aluminum491In Stock - Ready To Ship!0.4308Price
5712-5N-320.1410.2810.0325 Aluminum5195In Stock - Ready To Ship!0.4308Price
5712-3M-1000.1410.3870.040  Aluminum03-4 Weeks0.4347Price
5712-5R-400.1410.4060.0405 Aluminum60In Stock - Ready To Ship!0.4349Price
5712-24-200.1410.4320.0205 Aluminum03-4 Weeks0.4967Price
5712-24-320.1410.4320.0325 Aluminum03-4 Weeks0.4342Price
5712-24-400.1410.4320.0405 Aluminum03-4 Weeks0.4363Price
5712-5W-320.1410.5000.0405 Aluminum03-4 Weeks Price
5712-25-160.1420.3140.0165 Aluminum1490In Stock - Ready To Ship!0.3800Price
5712-25-320.1420.3140.0325 Aluminum34In Stock - Ready To Ship!0.4314Price
5712-25-710.1420.3140.0715 Aluminum1192In Stock - Ready To Ship!0.4370Price
5712-25-1000.1420.3140.1005 Aluminum258In Stock - Ready To Ship!0.4678Price
5712-163-160.1440.3750.0165 Aluminum1075In Stock - Ready To Ship!0.3822Price
5712-163-250.1440.3750.0255 Aluminum03-4 Weeks0.4878Price
5712-163-320.1440.3750.0325 Aluminum03-4 Weeks0.4328Price
5712-163-630.1440.3750.0635 Aluminum03-4 Weeks0.4382Price
5712-163-900.1440.3750.0905 Aluminum03-4 Weeks Price
5712-26-160.1450.6240.0165 Aluminum03-4 Weeks0.3912Price
5712-26-250.1450.6240.0255 Aluminum03-4 Weeks0.4979Price
5712-26-630.1450.6240.0635 Aluminum1946In Stock - Ready To Ship!0.4532Price
5712-26-900.1450.6240.0905 Aluminum03-4 Weeks0.4669Price
5712-27-160.1460.2700.0165 Aluminum179In Stock - Ready To Ship!0.3784Price
5712-27-250.1460.2700.0255 Aluminum4688In Stock - Ready To Ship!0.3429Price
5712-27-320.1460.2700.0325 Aluminum41836In Stock - Ready To Ship!0.4308Price
5712-27-630.1460.2700.0635 Aluminum2821In Stock - Ready To Ship!0.4592Price
5712-27-900.1460.2700.0905 Aluminum6207In Stock - Ready To Ship!0.4637Price
5712-164-160.1480.2440.0165 Aluminum3447In Stock - Ready To Ship!0.3775Price
5712-164-16-A20.1480.2440.0165Anodized Type II ClearAluminum98In Stock - Ready To Ship! Price
123456
Export only current results page?

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
icon-payment-visa icon-payment-mastercard icon-payment-discover icon-payment-amex

Use of this site acknowledges agreement of our Terms and Conditions. All website design, text, graphics, and the selection and arrangement thereof, are the property of Seastrom Manufacturing Co., Inc. and are Copyright ©2025 Seastrom Manufacturing Co., Inc. All Rights Reserved. SEASTROM, SEASTROM MANUFACTURING and the Seastrom logo are trademarks owned by Seastrom Manufacturing Co., Inc.