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NAS514P440-14P
Machine Screw
Description
Fastener Length: 7/8", Thread: 4-40, Thread Length: 53/64", NAS514 series screw
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.844 inches minimum and 0.875 inches maximum |
| Head Diameter | 0.183 inches minimum and 0.225 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 |
| Screw Material | Steel comp 8630 or steel comp 4037 |
| Screw Material Specification | Mil-s-6050 mil spec 1st material response or ams 6300 assn std 2nd material response |
| Screw Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec single treatment response |
| Specification Data | 80205-nas514 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.749 inches minimum and 0.830 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNJC |
| Thread Size | 4 |
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.
- NAS1102E04-14 NAS #4-40 · 7/8 in · Flat countersunk · Iron
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Catalog data updated 2026-07-05. Report a data error