bolts › close tolerance bolts
NAS1580C5T27D
Bolt
Description
Fastener Length: 2-13/64", Thread: 1/4-24, Thread Length: 33/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 2.044 inches minimum first hole and 2.094 inches maximum first hole |
| Fastener Length | 2.174 inches minimum and 2.204 inches maximum |
| Grip Diameter | 0.3110 inches minimum and 0.3120 inches maximum |
| Grip Length | 1.678 inches minimum and 1.698 inches maximum |
| Head Diameter | 0.578 inches minimum and 0.633 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 2 13/64 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response or ams 5732 assn std single material response or ams 5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches minimum first hole and 0.086 inches maximum first hole |
| Specification Data | 80205-nas1580 professional/industrial association standard |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.476 inches minimum and 0.526 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1580C5T5
- NAS1580C5T8
- NAS1580C5T9Y
- NAS1580C5T27D
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1580C5T27D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error