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AN505-4-6
Aeronautical Standard Machine Screw
Description
Fastener Length: 3/8", Thread: 4-40, Thread Length: 3/8"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.375 |
| Head Diameter | 0.200 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 55000 pounds per square inch |
| Screw Material | Steel or steel comp 1010 |
| Screw Material Specification | Qq-s-630 fed spec 2nd material response or qq-s-631 fed spec 2nd material response or qq-s-634 fed spec 2nd material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.325 inches minimum and 0.375 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- AN505-4-6
- AN505-4-10
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.
- MS18211-31C MS #4-40 · 3/8 in · Flat countersunk
- MS24693-BB4 MS #4-40 · 3/8 in · Flat countersunk
- MS24693BB4 MS #4-40 · 3/8 in · Flat countersunk
- NAS514P440-6P NAS #4-40 · 3/8 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error