screws › machine screws
NAS514P440-20P
Machine Screw
Description
Fastener Length: 1-1/4", Thread: 4-40, Thread Length: 1-1/4
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | 1.250 |
| Hardness Rating | Between 26.0 rockwell c and 32.0 rockwell c |
| Head Diameter | Between 0.183 inches and 0.225 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Screw Material | Steel |
| Screw Material Specification | Mil-s-7839 military specification single material response |
| Screw Surface Treatment Specification | Clb federal specification all treatment responses type 2 qq-p-416 |
| Specification Data | 80205-nas514 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 1.250 |
| 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.
- MS24693-C12 MS #4-40 · 0.073 in · Flat countersunk · Steel
- MS24693-S12 MS #4-40 · 0.073 in · Flat countersunk · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error