Product Description
UNC Grade C Zinc Plated Stover All-Metal Lock Nuts
These UNC Stover-type lock nuts feature an all-metal locking section that creates resistance as the mating bolt passes through it. This prevailing-torque action helps resist loosening in correctly assembled joints.
Manufactured from Grade C steel with a zinc plated and waxed finish, they are available in four imperial UNC coarse thread sizes. The hexagon body allows installation with a suitable spanner or socket.
Specifications
| Product type | Stover-type all-metal prevailing-torque lock nut |
|---|---|
| Material | Steel |
| Strength grade | Grade C |
| Finish | Zinc plated with wax lubricant |
| Thread form | UNC – Unified National Coarse |
| Locking mechanism | Deformed metal locking section |
| Body style | Hexagon with cone-top locking section |
Available Thread Sizes
| Nominal Thread Diameter | Threads Per Inch | Thread Designation |
|---|---|---|
| 1/4" | 20 TPI | 1/4"-20 UNC |
| 5/16" | 18 TPI | 5/16"-18 UNC |
| 3/8" | 16 TPI | 3/8"-16 UNC |
| 1/2" | 13 TPI | 1/2"-13 UNC |
Key Features
- All-metal construction without a nylon insert.
- Grade C strength designation.
- Prevailing-torque locking action.
- Zinc plated finish with wax lubrication.
- Four UNC imperial coarse thread sizes.
Typical Applications
Suitable for machinery, automotive maintenance, equipment repairs and engineering assemblies specifying UNC Grade C all-metal prevailing-torque lock nuts.
Installation
Use a bolt or stud with matching UNC diameter and threads per inch. Start the nut from its free-running end, with the cone-top locking section facing away from the joint. Ensure the bolt engages fully through the locking section.
Tighten to the assembly specification, accounting for prevailing torque and the lubricated finish. Follow the equipment manufacturer's requirements for bolt grade, replacement and reuse.
Ordering
Select the required UNC thread size and pack quantity from the available options. Check nut dimensions where clearance is critical.
Standards
UNC thread form reference: ASME B1.1. No specific DIN, BS or ASME dimensional compliance has been verified for this listing.
