National Stock number : 5310-01-505-3022
Recessed Washer
| Available Quantity | 4,273 |
| Available Conditions | NS NE |
| Classification | Nuts and Washers - FSC 5310 |
| Schedule B | 7318220000 |
| Stock Check Date | 03/09/2026 |
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
Recessed Washer
Hole Diameter
0.564in. and 0.568in. ⁓37/64"
Outside Diameter
1.059in. and 1.069in.
Recess Diameter
0.684in. and 0.694in.
Material Thickness
0.071in. and 0.085in.
Hardness Rating
39.0 rockwell c and 45.0 rockwell c
Recess Angle
90.0 degrees
Surface Finish
125.0 microinches all surfaces
Special Features
spec calls this: washer, countersunk, for use with bolts and nuts up to and including 260 ksi flu
Material
steel comp 4130
Material Document And Classification
MIL-S-6758&JDAMIL-S-18729 mil spec single material response
Surface Treatment
cadmium and chromate
Surface Treatment Document And Classification
QQ-P-416, type ii, class 2 fed spec all treatment responses
Style Designator
15 recessed
