B68227

View detailed technical data, stock status, and sourcing information for: B68227

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B68227
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-057-0573
Item Name Code
13393
Assigment Date
01/01/1961 (65 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

round center hole shape style, round peripheral shape style, 0.032 inches nominal thickness, rectangular cross-sectional shape style, 0.115 inches minimum and 0.125 inches maximum hole diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style
rectangular
Hole Diameter
0.115 inches minimum and 0.125 inches maximum
Peripheral Shape Style
round
Center Hole Shape Style
round
Thickness
0.032 inches nominal
Overall Diameter
0.204 inches minimum and 0.224 inches maximum
End Item Identification
mrap rg-33 and rg-33 auv; a4 bradley fighting vehicle; a3 bradley fighting vehicle
Material
steel corrosion resisting overall
Material Document And Classification
qq-s-766 fed spec single material response overall
Surface Treatment
passivate overall
Specification/Standard Data
80205-nas620 professional/industrial association standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5310-00-079-1569 No Name Available 07/16/1996
5310-00-402-7845 No Name Available 02/18/1972
5310-00-559-1157 No Name Available 07/09/2001
5310-00-847-2663 No Name Available 06/01/2002
5310-00-866-6253 No Name Available 07/01/2007
5310-00-902-6678 No Name Available 08/21/2015
5310-00-942-8501 No Name Available 05/01/2012
5310-01-363-4889 No Name Available 07/01/1995

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
004-002894-054 Flat Washer
100-782P1 Flat Washer
10056083 Flat Washer
1200884-1 Flat Washer
143600004 Flat Washer
146-200509-17 Flat Washer
153-0103-020 Flat Washer
153-0183-006 Flat Washer
24-00162-039 Flat Washer
310-0740-240 Flat Washer
4129-0006 Flat Washer
418154-54 Flat Washer
5310000570573 Flat Washer
5310PL0712485 Flat Washer
5310PL1389526 Flat Washer
763721-7 Flat Washer
7903354-02 Flat Washer
90945A111 Flat Washer
91921002 Flat Washer
933-018 Flat Washer
947620-4042 Flat Washer
B68227 Flat Washer
NAS620-C4 Flat Washer
NAS620C4 Flat Washer
NAS620C4-ALTN Flat Washer
PW026-4 Flat Washer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-057-0573?
The FSCG of the NSN 5310-00-057-0573 is 5310
Does the NSN 5310-00-057-0573 have a Schedule B code assigned?
Yes, the Schedule B code is 7318220000
Does NSN 5310-00-057-0573 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-00-057-0573 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-00-057-0573 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-00-057-0573 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

  • ITAR Registered
  • DDTC Registered
  • HAZMAT Certified
  • AS9120 Quality Standards
  • 100% Quality Inspections

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Pricing

Submit your request below and our team will respond quickly with up-to-date pricing, delivery estimates, and stock information:

ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Material 307,511
New Surplus 36,343
Serviceable 13
As Removed 1
Overhauled 1
Total 343,869
Availability of this item was last updated on: 05/22/2026 11:05 AM EDT. Stock levels and pricing are subject to change.

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