National Stock number : 5305-00-638-6400
Machine Screw
| Available Quantity | 22,964 |
| Available Conditions | NE NS SV OH |
| Classification | Screws - FSC 5305 |
| Schedule B | 7318152000 |
| Stock Check Date | 01/23/2026 |
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
Machine Screw
Thread Class
3a
Thread Direction
RIGHT-Hand
Thread Length
0.402in. and 0.473in. ⁓31/64"
Fastener Length
0.579in. and 0.624in. ⁓5/8"
Head Style
flat countersunk
Head Diameter
0.452in. and 0.510in.
Internal Drive Style
cross recess type ii
Nominal Thread Diameter
0.250in. ⁓1/4"
Thread Quantity Per Inch
28
Minimum Tensile Strength
160000 pounds per square inch
Countersink Angle
99.0 degrees and 101.0 degrees
Screw Material
steel comp 4130 or steel comp 4340 or steel comp 8740
Screw Material Document And Classification
MIL-S-6758 mil spec 1st material response or MIL-S-5000 mil spec 2nd material response or MIL-S-6049 mil spec 3rd material response
Screw Surface Treatment
cadmium and chromate
Screw Surface Treatment Document And Classification
QQ-P-416 ty 2 cl 3 fed spec single treatment response
Thread Series Designator
unf
Specification/standard Data
80205-NAS517 professional/industrial association standard
