Harbor Freight (Pittsburgh) 20 ton bottle jack knob

When I looked for other bottle jack knobs, I didn't see any with this dimension and shape for the release screw. Most used a cross pin.

• The dimensions for the release screw head are in one of the attached images.
• Harbor Freight Item/part number is 69478
• OD of the printed knob is 1.75"
• I drew it 4 thou over actual dimensions, so it's a tight fit, but in my case did not require a hammer, etc.
• I included an STL for a star-head version, a 4 point version, and a hex-head version.