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NAS6204-18D
Close Tolerance Bolt-Drilled Shank
Description
Close Tolerance Bolt-Drilled Shank
Specifications
| Alternate Part Number | NAS1104-18D |
|---|---|
| Country of Origin | USA |
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.300 inches first hole and 1.350 inches first hole |
| Drilling | Drilled Head |
| Fastener Length | Between 1.480 inches and 1.510 inches |
| Grip | 1.125 in |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 1.115 inches and 1.135 inches |
| Grip Tolerance | ±0.010 in |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Height | Between 0.125 inches and 0.140 inches |
| Head Style | Dished hexagon |
| Head Type | Hexagon |
| Industry Standards/Certification | NAS6204 |
| Length | 1 1/2, 1.495 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-063-1004 |
| NSN | 5306-01-063-1004 |
| Obsolete PN | NAS1104-18 |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Specification Data | 80205-nas6204 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.345 inches and 0.395 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.2500-28, 1/4 |
| Weight | .005 lb |
| Width Between Flats | Between 0.429 inches and 0.439 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS6204-18D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error