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AN508-6-4
Aeronautical Standard Machine Screw
Description
AN 508-6-4 Round Head Machine Screw
Specifications
| Fastener Length | 0.250 |
|---|---|
| Finish | Silver Plate |
| Head Diameter | 0.240 inches minimum and 0.260 inches maximum |
| Head Height | 0.091 inches minimum and 0.103 inches maximum |
| Head Style | Round Head |
| Internal Drive Style | Slot |
| Length | 1/4 |
| Material | Brass |
| Screw Material | Copper alloy |
| Screw Material Specification | Qq-b-611-canc fed spec single material response |
| Screw Surface Treatment | Tin or silver |
| Size | 6-32 |
| Thread Class | 2a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | 0.250 |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 6 |
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.
- AN515-6R4 AN #6-32 · 1/4 in · Round Head · Steel
- AN515C6R4 AN #6-32 · 1/4 in · Round Head · CRES
- AN515UB6R4 AN #6-32 · 1/4 in · Round Head
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Catalog data updated 2026-07-05. Report a data error