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NAS4705D21
Bolt
Description
Fastener Length: 1-3/4", Thread: 1/4-24, Thread Length: 3/8"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.573 inches minimum first hole and 1.593 inches maximum first hole |
| Fastener Length | 1.735 inches minimum and 1.765 inches maximum |
| Grip Diameter | 0.3735 inches minimum and 0.3745 inches maximum |
| Grip Length | 1.302 inches minimum and 1.322 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.510 inches minimum and 0.564 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Tri-wing recess |
| Length | 1 3/4 |
| 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 single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.070 inches maximum first hole and 0.080 inches maximum first hole |
| Specification Data | 80205-nas4705 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 | Qq-p-416,ty2,cl2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.437 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS4705D21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error