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NAS1102-4-16
Flat Head Machine Screw
Description
Flat Head Machine Screw
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Country of Origin | USA |
| Drive Style | Offset Cruciform |
| Fastener Length | 1.000 |
| Hardness Rating | Between 36.0 rockwell c and 40.0 rockwell c |
| Head Angle | 100 º |
| Head Diameter | Between 0.442 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Head Type | Flat |
| Industry Standards/Certification | NAS1102 |
| Internal Drive Style | Torque set |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 00-915-2545 |
| NSN | 5305-00-915-2545 |
| Screw Material | Steel comp e4340 or steel comp 8740 or steel comp 8735 or steel comp 6150 or steel comp 4140 or steel comp 4037 |
| Screw Material Specification | Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-8503 military specification 4th material response or mil-s-5626 military specification 5th material response or ams 6300 assn standard 6th material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Class 3 federal specification all treatment responses type 2 qq-p-416 |
| Sold In | EA |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.917 inches and 1.000 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Thread Type | Full Thread |
| Weight | .005 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS24693C298 MS 1/4-28 · 0.073 in · Flat countersunk · CRES
- MS24693S298 MS 1/4-28 · 0.073 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error