Mounting Holes: The distance from the center of the hole to the ground is 39mm, all slotted and holes openings are made of high-precision punch press once stamping, ensureing that absolutely the dimensions are absolutely accurate and precise, and with the motor fit tightly. 57 Stepper Motor Bracket Nema 23 Fixed Seat Connecting Support. 5 ౹ 45 sold. US $6.00. Tax excluded, add at checkout if applicable. Service commitment * 90 Degrees L shape mounting bracket. Nema 23 JK57HS56-2804 Hybrid Stepper Motor Manufacturer L-shaped Steel Motor Mount CNCMANS HM12-57 Nema 23 With Steel Stepper Motor Mounting Bracket Durable with alloy steel material, strong mounting and easy to install. 4Pcs 57 Stepper Motor Nema 23 Fixed Seat, Nema 23 ... – Grandado * Color: Black * Thickness: 3mm * Max Collar Diameter: 38mm * Mounting Holes: The distance from the center of the hole to the ground is 39mm. * Materials: Alloy steel material, powder coated finish.