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AN505-2-6
Aeronautical Standard Screw
Description
Fastener Length: 3/8", Thread: 2-56, Thread Length: 3/8"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.375 |
| Head Diameter | 0.147 inches minimum and 0.172 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 60000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 2c style |
| Screw Material | Steel |
| Screw Material Specification | 66 fed std single material response or astma108 assn std single material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416,type2 class 3 fed spec single treatment response or mil-c-81562,type 2 class 3 mil spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.339 inches minimum and 0.375 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.
- NAS662C2R6 NAS #2-56 · 3/8 in · Flat countersunk · Steel
- AN505B2R6 AN #2-56 · 3/8 in · Flat countersunk
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Catalog data updated 2026-07-05. Report a data error