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Viking AT5538 tap holder with clutch, 3/8 inch tap size, 3 inch length

Viking

Viking AT5538 Tap Holder w/Clutch 3/8" 3" L

SKU CH-RVR8-6D916

Holds a 3/8 inch tap with a built-in clutch to prevent breakage during threading operations

  • Clutch mechanism protects threads from over-torque damage
  • 3/8 inch tap capacity suits common thread sizes
  • 3 inch length provides extended reach access
  • Viking brand delivers professional workshop reliability
  • Pneumatic hydraulic design enables powered tapping operations

Tap holder with clutch for 3/8 inch taps

The Viking AT5538 is a pneumatic tap holder fitted with an integrated clutch. It accepts taps with a 3/8 inch shank and has an overall length of three inches. The tool is designed for use with portable air-driven or hydraulic power units in thread-cutting operations.

Integrated clutch prevents tap breakage on bottoming

The built-in clutch disengages automatically when the tap reaches the bottom of a blind hole or encounters excessive resistance. This mechanism stops the tap from continuing to rotate under load, which reduces the risk of snapping the tap and damaging the workpiece threads.

Direct fit into standard 3/8 inch tap chucks

Installation consists of inserting the holder into a compatible chuck or quick-change adapter that accepts a 3/8 inch tap shank. No additional hardware or calibration is required. The most common issue is using a chuck with worn jaws, which allows the tap to slip and prevents the clutch from engaging cleanly.

How it compares

Measured against everything we stock in Air & Hydraulic Power Tools, at today’s prices. Recalculated every night.

Price $110.99
Pricier than about 64% of the 243 comparable items (median $61.99).

Specifications

Product
Brand nameVIKING

Questions about this item

How often should I lubricate the clutch mechanism on the Viking AT5538?

Apply light machine oil to the clutch internals every few weeks of daily use to keep engagement smooth and prevent premature wear.

What stops me from tapping deeper holes with this 3-inch holder?

The 3-inch length limits reach, so holes deeper than that require an extension or a longer holder to avoid bottoming out the tap.

Does the Viking AT5538 get hot or vibrate during long production runs?

The steel body runs cool under normal speeds, but the clutch can warm up if you continuously stall taps; pause occasionally to let it dissipate heat.

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