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AN3-6A
Aeronautical Standard Machine Bolt
Description
Airframe Bolt
Specifications
| Alternate Part Number | 400-440 |
|---|---|
| Country of Origin | USA |
| Drilling | Undrilled Head |
| Fastener Length | 0.781 |
| Features Provided | Finished head |
| Grip | 0.375 in |
| Grip Length | 0.375, 3/8 |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | Between 0.109 inches and 0.141 inches |
| Head Style | Hexagon Head |
| Industry Standards/Certification | AN3 |
| Length | 25/32 in, 3/4 |
| Material | Steel |
| Material Specification | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-656-0358 |
| NSN | 5306-00-656-0358 |
| Nominal Length | 25/32 |
| Pre-Packaged Bag Quantity | 100 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 class 3 federal specification all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.19 |
| Thread Direction | Right-hand |
| Thread Length | 0.406 |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 10-32 |
| Weight | 0.0094 lb |
| Width Between Flats | Between 0.365 inches and 0.377 inches |
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.
- AN3-6 AN #10-32 · 25/32 in · Hexagon Head · Steel
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Catalog data updated 2026-07-05. Report a data error