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NAS514P428-14P
Machine Screw
Description
Machine Screw
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Country of Origin | USA |
| Fastener Length | 0.844 inches minimum and 0.875 inches maximum |
| Head Diameter | 0.447 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 7/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-006-0633 |
| NSN | 5305-00-006-0633 |
| Screw Material | Steel comp 4037 or steel comp 8630 |
| Screw Material Specification | Ams 6300 assn std 1st material response or mil-s-6050 mil spec 2nd material response |
| Screw Surface Treatment Specification | Qq-p-416,type 2,class 3 fed spec single treatment response |
| Sold In | EA |
| Specification Data | 80205-nas514 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.667 inches minimum and 0.769 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Weight | 0.001 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1102E4-14 NAS 1/4-28 · 7/8 in · Flat countersunk · Iron
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Catalog data updated 2026-07-05. Report a data error