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NAS6204-48D
Close Tolerance Bolt-Drilled Shank
Description
Fastener Length: 3-3/8", Thread: 1/4-28, Thread Length: 25/64
Specifications
| Alternate Part Number | NAS1104-48D |
|---|---|
| Country of Origin | USA |
| Distance From Head Largest Bearing Surface To Shank Hole Center | 3.175 inches and 3.225 inches first hole |
| Drilling | Drilled Head |
| Fastener Length | Between 3.355 inches and 3.385 inches |
| Grip | 3.000 in |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 2.990 inches and 3.010 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 | 3.370 in |
| Material | Steel |
| Material Specification | Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams6322 military specification 2nd material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches 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 | Type 2 class 2 federal specification single treatment response 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 | 0.0045 lb |
| Width Between Flats | Between 0.429 inches and 0.439 inches |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for NAS6204-48D — functionally equivalent.
- NAS1104-48D Listed alternate 1/4-28 · 0.099 in · Dished hexagon · Steel
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Catalog data updated 2026-07-05. Report a data error