National Stock number : 5310-01-040-0428
Flat Washer
| Available Quantity | 1,305 |
| Available Conditions | NE NS |
| Classification | Nuts and Washers - FSC 5310 |
| Schedule B | 7318220000 |
| Stock Check Date | 08/20/2025 |
Part-Number.info Quality System
- ISO 9001:2015 + AS9120B Certifed
- Audited supply chain
- Counterfeit Parts Prevention
- 100% Product Inspections
- 7 Year Record Retention
- HAZMAT Certified
- ITAR and DDTC Registered
Product Properties
Description
Flat Washer
Cross-sectional Shape Style
rectangular
Hole Diameter
0.315in. and 0.321in. ⁓21/64"
Peripheral Shape Style
round
Center Hole Shape Style
1 round
Thickness
0.057in. and 0.067in. ⁓5/64"
Overall Diameter
0.472in. and 0.478in. ⁓31/64"
Hardness Rating
27.0 rockwell c and 35.0 rockwell c
Criticality Code Justification
zzzw
Material
steel comp 4130 or steel comp 4140h
Material Document And Classification
AISI4130 assn std 1st material response or AISI4140H assn std 2nd material response
Surface Treatment
cadmium
Surface Treatment Document And Classification
QQ-P-416, typ 2, class 2 fed spec single treatment response
Departure From Cited Document
as modified by special quality control testing for mk 48 torpedo
