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AN505-2-8
Aeronautical Standard Screw
Description
Fastener Length: 1/2", Thread: 2-56, Thread Length: 1/2"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.469 inches minimum and 0.500 inches maximum |
| Head Diameter | 0.156 inches minimum and 0.172 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Slot |
| Length | 1/2 |
| Material | Steel |
| Min. Tensile Strength (psi) | 55000 pounds per square inch |
| Screw Material | Steel comp 1010 |
| Screw Material Specification | Qq-s-671 fed spec single material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416 ty1 cl3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.433 inches minimum and 0.500 inches maximum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNC |
| Thread Size | 2 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- AN505-2-6
- AN505-2-8
- AN505-2-10
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.
- NAS1102-02-8 NAS #2-56 · 1/2 in · Flat countersunk · Steel
- NAS662C2R8 NAS #2-56 · 1/2 in · Flat countersunk · CRES
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Catalog data updated 2026-07-05. Report a data error