bolts › close tolerance bolts
NAS1578A3R4L
Flat Bolt
Description
Fastener Length: 5/8", Thread: 10-32, Thread Length: 3/8"
Specifications
| Fastener Length | 0.598 inches minimum and 0.628 inches maximum |
|---|---|
| Grip Diameter | 0.1885 inches minimum and 0.1895 inches maximum |
| Grip Length | 0.240 inches minimum and 0.260 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum fastener and 40.0 rockwell c maximum fastener |
| Head Diameter | 0.360 inches minimum and 0.374 inches maximum |
| Head Height | 0.115 inches minimum and 0.125 inches maximum |
| Head Style | Pan no. 2 |
| Internal Drive Style | Torque-set ribbed |
| Length | 5/8 |
| Locking Feature | Patch threads |
| Material | Plastic |
| Material Specification | Mil-s-5626 mil spec 1st material response fastener or mil-s-5000 mil spec 2nd material response fastener or mil-s-6049 mil spec 3rd material response fastener |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1578 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,type 2 class 2 fed spec single treatment response fastener |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.338 inches minimum and 0.388 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNJF |
| Thread Size | 10 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- NAS1578A3R4 NAS #10-32 · 5/8 in · Pan no. 2 · Steel
- NAS1578C3R4P NAS #10-32 · 5/8 in · Pan no. 2 · Iron
- NAS1578V3T4 NAS #10-32 · 5/8 in · Pan no. 2 · Titanium
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Catalog data updated 2026-07-05. Report a data error