Castle Nuts, Brass, 1/2"-13
Slotted Nuts also called Castellated Nuts in Brass
- Used with a cotter pin
- Notched on one side
- Torque the nut then align with the closest hole
- Used with a bolt or axle that has a hole in it
- Used in low torque applications
A Castle nut, castellated nut, or slotted nut is normally used with a Cotter Pin to create a locking fastener assembly that cannot be loosened due to accidental vibration. It is common to see this type of nut on vehicles and machinery where vibration is frequent.
| Nut Sizes | Width Across Flats | Overall Height |
| 1/4"-20 | 0.434" REF | 0.281" REF |
| 5/16"-18 | 0.499" REF | 0.326" REF |
| 3/8"-16 | 0.562" REF | 0.410" REF |
| 1/2"-13 | 0.745" REF | 0.569" REF |
| 5/8"-11 | 0.934" REF | 0.724" REF |
| 3/4"-10 | 1.125" REF | 0.820" REF |
Product number:
129000-002-0032