bolts › shear bolts
NAS6604-20X
NAS Bolts
Description
Fastener Length: 1-11/16", Thread: 1/4-28, Thread Length: 7/16", NAS6604 series bolt
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | 1.660 inches minimum and 1.690 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Style | Dished hexagon |
| Length | 1 11/16 |
| Material | Steel |
| Material Specification | Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams6322 assn std 2nd material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shoulder Diameter | 0.2641 inches minimum first shoulder and 0.2651 inches maximum first shoulder |
| Shoulder Length | 1.240 inches minimum first shoulder and 1.260 inches maximum first shoulder |
| Shoulder Shape | Round first shoulder |
| Specification Data | 80205-nas6604 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty2 cl2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.400 inches minimum and 0.450 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Weight | .005 lb |
| Width Between Flats | 0.429 inches minimum and 0.439 inches maximum |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS6604-10X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-11Y NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-12X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-13X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-14X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-16X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-16Y NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-18X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-22Y NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6604-24X NAS 1/4-28 · 0.073 in · Dished hexagon · Steel
- NAS6804U18Y NAS 1/4-28 · 0.073 in · Dished hexagon · Titanium
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Catalog data updated 2026-07-05. Report a data error