National Stock number : 5310-01-076-4958
Double Extended Washer Plain Nut
| Available Quantity | 2 |
| Available Conditions | NS |
| Classification | Nuts and Washers - FSC 5310 |
| Schedule B | 7318160000 |
| Stock Check Date | 05/26/2026 |
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
Double Extended Washer Plain Nut
Thread Class
3b
Thread Direction
RIGHT-Hand
Washer Outside Diameter
0.433in. and 0.438in.
Counterbore Diameter
0.255in. nut and 0.275in. nut
Overall Height
0.319in. and 0.339in.
Nut Style
double hexagon
Washer Thickness
0.035in. and 0.055in.
Nut Counterbore Depth
0.052in. nut and 0.072in. nut
Width Across Flats
0.312in. ⁓5/16"
Thread Series
unjf
Thread Quantity Per Inch
28
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Nominal Thread Size
0.250in. ⁓1/4"
Bearing Surface Finish
125.0 microinches
Special Features
6 scallops equally spaced on washer in relation to double hexagon
Material
steel comp 8740
Material Document And Classification
ams 6322 assn std single material response
Surface Treatment
cadmium
Surface Treatment Document And Classification
ams 2400 assn std single treatment response
