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3/8 inch drive 9 mm universal impact socket with transparent finish

Capri Tools

Capri Tools 3/8 in Drive 9 mm Universal Impact Socket 5-3309

SKU CH-331Q-V8999

A 3/8 in drive 9 mm universal impact socket rotates 360 degrees for fastener access and uses Chrome Molybdenum steel with manganese phosphate coating to resist corrosion while meeting ASME B 107.110

  • Product colorTransparent
  • 360-degree rotation reaches tight fasteners
  • Chrome Molybdenum steel withstands high torque from power tools
  • Manganese phosphate coating resists corrosion better than black oxide
  • 6-point WaveDrive design prevents fastener rounding
  • Meets ASME B 107.110 standards

3/8 in Drive 9 mm Universal Impact Socket

The Capri Tools 5-3309 is a 3/8 inch drive universal impact socket sized at 9 mm. It is designed for mechanics and technicians who need reliable fastener engagement with power tools. The socket rotates a full 360 degrees to reach fasteners at difficult angles. It suits professional automotive and industrial maintenance work.

Manganese phosphate coating and WaveDrive grip

Premium Chrome Molybdenum steel receives a proprietary heat treatment for high-torque durability. The manganese phosphate coating resists corrosion better than standard black oxide finishes. A 6-point WaveDrive design grips fastener flats tightly to prevent rounding under sustained load. The construction meets ASME B 107.110 standards for impact use.

360-degree rotation for obstructed access

The universal joint allows the socket to pivot freely around the drive axis. This single feature determines whether the tool fits your workspace when fasteners sit at angles a straight socket cannot reach. If your bolts are all straight-on, a standard impact socket will serve you better.

How it compares

Measured against everything we stock in Ratchets, Sockets & Drive Tools, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 85% of the 418 comparable items (median $20.99).

Specifications

Product
Brand nameCAPRI TOOLS
Product colorTransparent

Questions about this item

Does the manganese-phosphate coating on this 5-3309 socket handle heat and friction from all-day impact use?

The manganese-phosphate coating is preferred in military and aerospace applications for superior corrosion resistance and protection compared to black oxide, holding up under high torque from power tools.

What drive size must my impact wrench have to run this 9 mm universal socket?

Your impact wrench needs a 3/8 in. drive anvil to match the 3/8 in. drive of this Capri Tools universal impact socket.

Will the 360-degree swivel on this socket clear the same bolts my older 3/8 in. drive extensions reach?

Yes, the 3/8 in. drive fits your existing extensions and ratchets, while the universal joint rotates 360 degrees for access in tight spots.

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