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NAS604-16
Screw
Description
Fastener Length: 0-63/64", Thread: 1/4-28, Thread Length: 0-63/64"
Specifications
| Departure From Cited Designator | As modified by special features |
|---|---|
| Fastener Length | 0.970 inches minimum and 1.000 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.473 inches minimum and 0.492 inches maximum |
| Head Height | 0.162 inches minimum and 0.175 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 0 63/64 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160 pounds per square inch |
| Screw Material | Steel comp 4140 or steel comp e4340 or steel comp 8740 |
| Screw Material Specification | Mil-s-562 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 |
| Screw Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Special Features | Fleet ballistic missile quality as identified by quality control no.posp913093 |
| Specification Data | 80205-nas604 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.899 inches minimum and 1.000 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
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.
- NAS1100E4-16 NAS 1/4-28 · 1/16 in · Pan Head · Iron
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Catalog data updated 2026-07-05. Report a data error