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NAS600-20
Screws
Description
Fastener Length: 1-1/4", Thread: 4-40, Thread Length: 1-1/4"
Specifications
| Fastener Length | 1.250 |
|---|---|
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.205 inches minimum and 0.219 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Screw, machine - aircraft, pan head, cruciform recess full threaded, alloy steel |
| Screw Material | Steel comp 8630 |
| Screw Material Specification | Mil-s-6050 mil spec single material response or an-s-9 mil std single material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-o-416,ty1,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 1.190 inches minimum and 1.250 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.
- NAS1100-04-20 NAS #4-40 · 0.073 in · Pan Head · Steel
- NAS600-20B NAS #4-40 · 0.073 in · Pan Head · Steel
- NAS600-20P NAS #4-40 · 0.073 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error