bolts › close tolerance bolts
NAS1204-3
Close Tolerance Bolt
Description
Close Tolerance Bolt
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Country of Origin | USA |
| Fastener Length | Between 0.489 inches and 0.519 inches |
| Grip | 0.188 in |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 0.178 inches and 0.198 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Angle | 100 º |
| Head Diameter | Between 0.449 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Head Type | Countersunk |
| Industry Standards/Certification | NAS1204 |
| Internal Drive Style | Cross recess type 1 |
| Length | 0.504 in |
| Material | Steel |
| Material Specification | Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 00-890-0097 |
| NSN | 5305-00-890-0097 |
| Specification Data | 80205-nas1204 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 3 federal specification all treatment responses type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.25 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.291 inches and 0.341 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 0.2500-28, 1/4 |
| Weight | 0.0005 lb |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1204-3. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error