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MS27039-4-35
Military Standard Machine Screw
Description
Fastener Length: 2-1/4", Thread: 1/4-28, Thread Length: 37/64
Specifications
| Fastener Length | Between 2.204 inches and 2.251 inches |
|---|---|
| Hardness Rating | Between 26.0 rockwell c and 32.0 rockwell c |
| Head Diameter | Between 0.473 inches and 0.492 inches |
| Head Height | Between 0.162 inches and 0.175 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 2 1/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Screw Material | Steel comp 4037 or steel comp 8630 |
| Screw Material Specification | Ams 6300 assn standard 1st material response or mil-s-6050 military specification 2nd material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.501 inches and 0.578 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| 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.
- MS27039-4-32 MS 1/4-28 · 0.086 in · Pan Head · Steel
- MS27039-4-33 MS 1/4-28 · 0.086 in · Pan Head · Steel
- MS27039-4-34 MS 1/4-28 · 0.086 in · Pan Head · Steel
- MS27039-4-40 MS 1/4-28 · 0.086 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error