screws › machine screws
NAS600-20P
Machine Screw
Description
Fastener Length: 1-1/4", Thread: 4-40, Thread Length: 1-1/4", pan head, NAS600 series screw
Specifications
| Fastener Length | 1.25 |
|---|---|
| Hardness Rating | Between 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.205 inches and 0.219 inches |
| Head Height | Between 0.07 inches and 0.08 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | Steel |
| Material Specification | Mil-s-6050 military specification single material response or an-s-9 military standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Steel comp 8630 |
| Screw Surface Treatment Specification | Type 2 cl 3 federal specification all treatment responses qq-p-416 |
| Surface Treatment | Cadmium and chromate |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.200 inches and 1.250 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| 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
- NAS600-20 NAS #4-40 · 0.073 in · Pan Head · Steel
- NAS600-20B NAS #4-40 · 0.073 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error