screws › close tolerance screws
NAS4403-9
Close Tolerance Bolt
Description
Close Tolerance Bolt
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Country of Origin | USA |
| Fastener Length | 0.870 inches minimum and 0.900 inches maximum |
| Grip | 0.562 in |
| Grip Diameter | 0.1885 inches minimum and 0.1895 inches maximum |
| Grip Length | 0.552 inches minimum and 0.572 inches maximum |
| Head Angle | 100 º |
| Head Diameter | 0.338 inches minimum and 0.381 inches maximum |
| Head Style | Flat countersunk |
| Head Type | Countersunk |
| Industry Standards/Certification | NAS4403 |
| Internal Drive Style | Tri-wing recess |
| Length | 0.885 in, 57/64 |
| Material | Steel |
| Material Specification | Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams 6322 assn std 2nd material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-160-6831 |
| NSN | 5305-01-160-6831 |
| Specification Data | 80205-nas4403 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.298 inches minimum and 0.348 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNJF |
| Thread Size | 0.1900-32, 10 |
| Weight | .005 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error