Castle Nut - AN310-4
Aeronautical Standard Part
Description: Castle Nut
Part Number: AN310-4
Product Overview
A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.
Features
| Thread Class: | | 3B |
| Thread Direction: | Right-hand | |
| Nut Style: | Castellated, Hexagon | |
| Nut Height: | 0.265'' Inches Minimum and 0.297'' Inches Maximum | |
| Width Across Flats: | 0.428'' Inches Minimum and 0.440'' Inches Maximum | |
| Thread Series: | UNF | |
| Thread Quantity per Inch: | 28 | |
| Nominal Thread Size: | 0.250'' Inches | |
| Bearing Surface Type: | Chamfered or Washer Faced | |
| Material: | Steel Overall | |
| Surface Treatment: | Cadmium Overall | |
| Surface Treatment Document and Classification: | QQ-P-416 ty 2 cl 3 fed spec single treatment response overall |
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