This model of the  Sangtai 6168 motor is used for a dial or case up to 1/8 inch thick.  

Threaded portion of shaft is 5/16"  in diameter

Brass threaded portion of the shaft is 3/16" in length (see diagram)

Overall shaft length is 1/2"

 Add approx. 1/8" to total shaft length with cap pin on shaft (important if your clock has a lens)

NOTE:  The hex nut will need at least 1/16" to screw on the shaft, so your case or dial cannot be thicker than 1/8".

Dimensions of movement: 2-3/16" x 2-3/16" x 5/8" 

Requires one AA battery (not included) - may be purchased separately at accessories link

Comes with: rubber washer (if needed), brass washer, hex nut, pin cap,  2-11/16" minute hand and 2" hour hand

NOTE:  Our other hands will NOT fit this movement, only the ones that come with this movement. Also there are many different models of the Sangtai 6168 brand with different shaft sizes, so check the specifications.