National Stock number : 5305-00-639-4534
Cap Socket Head Screw
| Available Quantity | 33 |
| Available Conditions | NS |
| Classification | Screws - FSC 5305 |
| Schedule B | 7318152000 |
| Stock Check Date | 04/06/2026 |
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
Cap Socket Head Screw
Thread Class
3a
Thread Direction
RIGHT-Hand
Thread Length
0.382in. ⁓25/64"
Fastener Length
1.235in. and 1.297in. ⁓1-19/64"
Head Style
flat countersunk
Head Diameter
0.497in. and 0.507in.
Shank Unthreaded Hole Diameter
0.076in. first hole
Internal Drive Style
hexagon
Nominal Thread Diameter
0.250in. ⁓1/4"
Width Across Flats
0.156in. and 0.157in. ⁓11/64"
Thread Quantity Per Inch
28
Minimum Tensile Strength
160000 pounds per square inch
Countersink Angle
100.0 degrees
Distance From Head Largest Bearing Surface To Shank Hole Center
1.116in. first hole and 1.136in. first hole
Material
steel
Surface Treatment
cadmium head
Thread Series Designator
unf
