bolts › close tolerance bolts
NAS1204-14D
Close Tolerance Bolt
Description
Fastener Length: 1-13/64", Thread: 1/4-28, Thread Length: 21/64
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.050 inches first hole and 1.100 inches first hole |
| Fastener Length | Between 1.176 inches and 1.206 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 0.865 inches and 0.885 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.449 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| 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 |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Specification Data | 80205-nas1204 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Ty2 cl3 federal specification single treatment response qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| 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 | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1204-14D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error