#31 in a #233 monted on bottom. Mounting Specifications: Mounting
#31 in a #233 monted on top. Mounting Specifications: Mounting Height - 29/64", Centerline - 25/64", Trip Pin Height - 1/32", Center Hole - 2-56 Insulated Screws are the most commonly used. (Screw length will vary).
#233 Plastic Draft Gearboxes & Lids Features: Material - Insulated Plastic, Dimensions - 3/8"L x 5/16"W x 9/64"H, Works With - NO.5, #58, 20-Series Couplers.
#31 Plastic Coupler Features: Material - Metal Knuckle, Plastic Coupler Shank, Shank Length - Long (25/64") (center hole to back of coupler head), Coupler Offset - Underset, Knuckle Spring - #622, Centering System - Standard Shank, Centering Spring - #621 Torsion Centering Spring, Head - Standard Head, Works With - #233 draft gearboxes.
The #31 Kadee?« Magne-Matic?« Coupler features a very strong plastic insulated coupler, #621 Torsion Centering Spring & insulated #233 Draft Gear Box. 30-Series Kadee?« Magne-Matic?« Couplers are designed for body mounting either above or below the mounting platform, with or without Draft Gear Box Lid and with Draft Gear Box Lid either on top or bottom.
Note: The 30-Series Torsion Spring can be mounted either below or above the coupler shank, but must always be mounted between the Coupler Spring Lid and Draft Gear Box.
