screws › machine screws
MS27039-4-25
Military Standard Machine Screw
Description
Fastener Length: 1-5/8", Thread: 1/4-28, Thread Length: 37/64"
Specifications
| Fastener Length | 1.579 inches minimum and 1.626 inches maximum |
|---|---|
| Hardness Rating | 26.0 rockwell c minimum and 32.0 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 | 1 5/8 |
| 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 | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.531 inches minimum and 0.579 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS27039-4-25. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error