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Silver metal keyless drill chuck with knurled grip sleeve

SPEEDAIRE

SPEEDAIRE PN21AA328G Keyless Chuck

SKU CH-AW8E-KTV33

A keyless chuck compatible with Speedaire parts 21AA74, 21AA75 and 21AA76

  • Keyless design speeds bit changes
  • Compatible with Speedaire parts 21AA74, 21AA75, 21AA76
  • New condition ready for immediate use
  • California Prop 65 warning for cancer risk
  • California Prop 65 warning for reproductive harm

SPEEDAIRE Keyless Chuck PN21AA328G

The SPEEDAIRE PN21AA328G is a keyless chuck designed for use with compatible Speedaire air compressor accessories. It allows operators to change bits quickly without a separate key, streamlining workflow on automotive and shop tasks. The unit is sold new and carries California Proposition 65 warnings for chemicals linked to cancer and reproductive harm. Buyers needing a keyed chuck or a different brand fitment should look elsewhere.

Compatible Grainger Part Numbers 21AA74 21AA75

This chuck is confirmed compatible with Grainger part numbers 21AA74, 21AA75 and 21AA76 within the Speedaire range. It fits the applicable series for those references, providing a direct replacement or upgrade path. Compatibility with other manufacturers' equipment or unlisted Speedaire models is not verified. Users with non-matching part numbers will need a different chuck.

Keyless Operation Changes Bit Swaps

The keyless design removes the need to locate and use a chuck key during bit changes, reducing downtime on repetitive jobs. It tightens and releases by hand, which is faster but may not suit applications requiring maximum mechanical clamping force. No additional software or accessories are bundled with this item. Workflows dependent on keyed retention should consider alternative products.

Highlights

  • Keyless design speeds bit changes
  • Compatible with Speedaire parts 21AA74, 21AA75, 21AA76
  • New condition ready for immediate use
  • California Prop 65 warning for cancer risk
  • California Prop 65 warning for reproductive harm

Specifications

BrandSPEEDAIRE

Questions about this item

Will the PN21AA328G keyless chuck fit the Speedaire compressor I already own that uses Grainger part 21AA74?

Yes, the chuck is listed as compatible with Grainger part numbers 21AA74, 21AA75 and 21AA76 for Speedaire equipment.

How can I confirm the chuck is gripping the drill bit securely once installed?

Insert a bit, hand-tighten the sleeve until it locks, then give the bit a firm tug — it should not pull out or wobble.

Does the box include any adapters or mounting hardware, or must I buy them separately?

The package contains only the keyless chuck itself; no adapters or mounting hardware are included.

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