Facom 1/2 in Drive Deep Bi Hexagon Socket - 3/4 in AF

The Facom S.3/4LA is a 1/2 inch drive deep bi-hexagon 12-point socket designed for professional us...

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Full details

The Facom S.3/4LA is a high-performance deep bi-hexagon socket engineered for professional mechanics and industrial technicians who require reliable fastening tools. It offers exceptional reach and torque handling for recessed nuts and long bolts, making it an essential addition to any heavy-duty tool kit. While its 12-point design is perfect for standard clearance, users should ensure they are using the correct size to avoid rounding hardware on high-torque applications.

All features

Model Part NumberS.3/4LA
BrandFacom

Extended Product Information

FAQs

Is this socket safe to use with an impact wrench?

This is a standard chrome socket designed for manual ratchets; it is not classified as an impact-rated socket and should not be used with high-torque impact guns.

What does 'AF' stand for?

AF stands for 'Across Flats', indicating that the measurement is taken across the flat sides of the fastener head, conforming to SAE/Imperial standards.

Can I use this on metric nuts?

No, this is a 3/4-inch socket. Using imperial sockets on metric nuts can result in slipping and damaged fasteners.

How do I maintain the chrome finish?

Regularly wipe it down with a cloth soaked in light oil or degreaser after use and avoid storing it in damp conditions.

What is the primary advantage of a 12-point socket?

The primary advantage is the ability to engage a nut or bolt in 30-degree increments, which is very helpful in tight, obstructed spaces where a 6-point socket might not fit easily.

Troubleshooting

Socket feels loose on the fastener

Verify that you are using a 3/4-inch AF size and not a similarly sized metric equivalent (such as 19mm).

Socket becomes stuck on the fastener

Ensure the debris is cleaned out of the internal bi-hexagon teeth; use a small pick or compressed air to clear obstructions.

Surface rust appearing on the exterior

Clean the surface with a fine steel wool pad or specialized chrome polish and ensure the tool is stored in a dry, humidity-controlled area.

Pros and Cons

Pros

  • Extended length is ideal for hard-to-reach fasteners
  • High-quality chrome finish resists rust and corrosion
  • 12-point configuration allows for faster engagement in tight spots
  • Durable steel composition handles high torque requirements

Cons

  • 12-point design can increase risk of rounding if fastener is seized
  • May be too long for extremely restricted overhead clearances
  • Dedicated SAE sizing is not suitable for metric applications

Setup, Compatibility & Care

To ensure the longevity of your socket, always pair it with a high-quality 1/2-inch drive ratchet or impact tool rated for the same size. While the socket is robust, avoid using chrome-plated sockets with high-impact power tools, as this can lead to premature chrome chipping or steel stress. After use, wipe the socket with a clean cloth to remove grease and debris. Store the tool in a dry environment or a modular foam tray to prevent surface oxidation over time.