Silverline Socket - 1/2" Drive - 12pt Metric - 21mm
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Product Information
Full details
This guide is for mechanics, DIY enthusiasts, and anyone needing a reliable socket for automotive or general repair tasks. The 21mm Silverline 12-point bi-hex socket offers fast and accurate fastener engagement, ensuring efficient work. A potential caveat is its specific 21mm size, making it suitable for tasks requiring that exact metric dimension.
All features
| Model Part Number | 501751 |
|---|---|
| Brand | Silverline |
Extended Product Information
FAQs
What does '12-point bi-hex' mean?
It means the socket has 12 internal points, which allows it to grip a hexagonal fastener on more sides and at finer angles (every 30 degrees) compared to a standard 6-point socket (every 60 degrees). This can make it easier to engage fasteners in tight spaces.
What is the benefit of the knurled ring?
The knurled ring around the socket provides a textured surface that improves grip, making it easier to start nuts by hand or to hold onto the socket when it's greasy or oily.
Can this socket be used with a pneumatic impact wrench?
While this is a durable socket made of chrome vanadium steel, it is not specifically rated for heavy-duty impact use. For impact wrenches, it is recommended to use sockets specifically designed for impact applications, usually made from darker, hardened steel.
How do I clean and maintain the socket?
Wipe the socket clean with a dry cloth after each use. For tougher grime, use a mild degreaser and a cloth, then dry thoroughly. Store in a dry place to prevent rust.
What is the material of the socket?
The socket is precision cold-forged from hardened and tempered chrome vanadium steel.
What does the 'bearing hole' refer to?
The bearing hole is the square recess designed to accept the drive tang of a ratchet or extension bar. It ensures a secure and positive connection, preventing the socket from slipping off the tool.
Troubleshooting
Socket feels loose on the ratchet drive.
Ensure the drive square on the ratchet and the bearing hole on the socket are clean and free of debris. Try a different 1/2" drive tool to confirm if the issue is with the socket or the tool.
Difficulty engaging the fastener.
Verify you are using the correct 21mm socket size for the fastener. Ensure the fastener head is clean and undamaged. Try aligning the socket from a slightly different angle, leveraging the 12-point design.
Socket shows signs of rust or corrosion.
Clean the affected area with a soft brush or cloth. Apply a light coat of protective oil or WD-40 to the surface and wipe clean. Ensure the socket is stored in a dry location.
Pros and Cons
Pros
- Durable construction with hardened chrome vanadium steel.
- Corrosion-resistant plating for extended lifespan.
- 12-point design allows for quicker engagement than 6-point sockets.
- Chamfered edges and thin walls improve accessibility.
- Knurled ring offers better grip.
- Secure connection to tools via bearing hole.
Cons
- Specific 21mm size limits its use to fasteners of that dimension.
- 12-point sockets can be more prone to rounding fasteners if not used carefully compared to 6-point.
- May require a specific torque wrench for precision applications.
Setup, Compatibility & Care
Setup:
This socket is designed for use with any standard 1/2" drive ratchet, torque wrench, or extension bar. Simply push the socket onto the drive square of your tool until it clicks or feels securely seated.
Compatibility:
- Drive Size: Compatible with all 1/2" (12.7mm) drive tools.
- Fastener Type: Primarily designed for metric fasteners with a 21mm hexagonal head or nut.
Care:
- After use, wipe the socket clean with a dry cloth to remove dirt, grease, and debris.
- For stubborn grime, use a cloth lightly dampened with water or a mild degreaser, then dry thoroughly.
- Store in a dry environment to prevent corrosion, preferably in a socket organizer or toolbox.
- Avoid exposing the socket to harsh chemicals or abrasive materials that could damage the plating.