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MS27039-1-21
Machine Screw
Description
Machine Screw
Specifications
| Alternate Part Number | NAS221-21 |
|---|---|
| Country of Origin | USA |
| Fastener Length | Between 1.329 inches and 1.376 inches |
| Grip | 0.875 in |
| Hardness Rating | Between 26.0 rockwell c and 32.0 rockwell c |
| Head Angle | 100 ? |
| Head Diameter | Between 0.357 inches and 0.373 inches |
| Head Height | Between 0.122 inches and 0.133 inches |
| Head Style | Pan Head |
| Head Type | Recessed |
| Industry Standards/Certification | MS27039 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1.344 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-891-1778 |
| NSN | 5305-00-891-1778 |
| Pre-Packaged Bag Quantity | 100 |
| Screw Material | Steel comp 8630 or steel comp 4037 |
| Screw Material Specification | Mil-s-6050 military specification 1st material response or ams 6300 assn standard 2nd material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.19 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.377 inches and 0.516 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 10-32 |
| Weight | 0.01 lb |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS27039-1-21 — functionally equivalent.
- AN525-10R22 Same NSN #10-32 · 0.073 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error