National Stock number : 5310-01-206-7289
Self-locking Extended Washer Nut
| Available Quantity | 13,843 |
| Available Conditions | NS NE SV OH AR |
| Classification | Nuts and Washers - FSC 5310 |
| Schedule B | 7318160000 |
| Stock Check Date | 04/09/2026 |
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
Self-locking Extended Washer Nut
Thread Class
3b
Thread Direction
RIGHT-Hand
Locking Feature
prevailing torque all metal design
Washer Outside Diameter
0.438in.
Lubrication
dry film lubricant
Overall Height
0.310in.
Nut Style
double hexagon
Washer Thickness
0.020in.
End Item Identification
w/s: aircraft, osprey V-22A, air force; aircraft, osprey V-22A, marine corps; aircraft, stratolifter C-135; engine, aircraft, F-108 (CFM-56, KC-135A)
Width Across Flats
0.305in. and 0.313in. ⁓21/64"
Temp Rating
900.0 deg fahrenheit
Thread Series
unjf
Thread Quantity Per Inch
28
Nominal Thread Size
0.250in. ⁓1/4"
Material
iron alloy 660
Material Document And Classification
AMS5737 assn std single material response
Surface Treatment
cadmium and chromate
Surface Treatment Document And Classification
QQ-P-416 type 2 class 2 fed spec single treatment response
Specification/standard Data
81205-BHCN10Hr manufacturers standard
