5310-01-554-9975
Flat Washer
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Official Item Classification
- Name
- Flat Washer
- (NSN) National Stock Number
- 5310-01-554-9975
- (FSG) Federal Supply Group
- 53 Hardware and Abrasives
- (FSC) Federal Supply Classification
- 5310 Nuts and Washers
- (INC) Item Name Code
- 13393
- (FIIG) Federal Item Identification Guide
- A022B0
- Date
- 08/27/2007 (19 years ago)
0.648 inches nominal hole diameter, round center hole shape style, rectangular cross-sectional shape style, 0.045 inches nominal thickness, round peripheral shape style
Specs & Compatibility
rectangular
0.648 inches nominal
round
round
0.045 inches nominal
1.047 inches nominal
mmmcds ssn688-718
30.0 rockwell c minimum
silver overall
nickel alloy overall
astm b168, condition a. spring temper assn std all material responses overall
nickel overall
qq-n-290, class 1. grade f national std/spec all treatment responses overall
Regulatory Compliance
Item does not contain precious metal.
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
0013393
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