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Hardt 99-17090 is a genuine OEM square key measuring 3/16 inch by 1 inch. The small metal machine key functions as a mechanical drive/keying component for securing rotating parts such as shafts, gears, and pulleys. It is sold individually and is compatible with Blaze models.
OEM Hardt square key (3/16 x 1 in) used for securing shafts, gears, and pulleys; sold each; compatible with Blaze.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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