Toro OEM 139 5871 Threaded Clip Pin Mower Deck PIN/STUD Is Fastened to The Mower Deck Back Weldment Bracket/Ears and is Contained with a Nut on the Opposite Side of The Mower Deck Weldment Bracket. Toro 139 5871 Mower Deck Stud/Pin Servers as a Fastner on the Weldment Bracket and Enables the Left & Right-Side Sway Bar/Arm to Insert over The Mower Deck Stud/Pin Allow the Mower Deck to Be Fastened to the Left & Right-Side Sway Bar/Arm with the Use of a Clip/Copper Pin. Toro 139-5871 Fit Toro Select 34" Timecutter Standard Models - Select 42" Timecutter ZS, MX, 4200, Standard, My-Ride, Battery Models - Select 50" Timecutter MX, 5000, Standard, My-Ride, Battery Models - Select 54" Timecutter My-Ride & Battery Models (All Late Models that Contain Cast Aluminum Axle's). Due to Variation Within Model Numbers/Series, please refer to the Images above; Product Specifications and to the Model Fit Chart below to ensure a correct fit and for an Accurate Break down of Specific Model Number Usage. ASSOCIATED PARTS REFERENCES FOR PART NUMBER 139-5871 ONLY CLICK ON THE ASSOCIATED PART NUMBER TO BE REDIRECTED 104-8301 - FLANGE NUT - (Retains the Mower Deck Clip Pin Stud/Pin to the Mower Deck Weldment Brackets/Ears) x1 Per Mower Deck Clip Pin Stud/Pin 139-5871 - MOWER DECK CLIP STUD/PIN - (Assembled on the Mower Deck Weldment Bracket/Ear the Mower Deck Clip Pin Stud/Pin Enables the Mower Deck Right & Left Sway Bar/Arms to be Fastened toe The Mower Deck) x2 Per Unit 3256-26 - FLAT WASHER - (Adds Extra Support for the Clip Pin that Retains the Mower Deck Left & Right Sway Bar/Arm to 139-5871 Mower Deck Clip Stud/Pin which Fasten to the Mower Deck - Used Between the Whole in the Mower Deck Sway Bar/Arm and the Clip Pin) x1 Per Mower Deck Clip Pin Stud/Pin 1-806005 - CLIP/COTTER PIN - (Retains the Mower Deck Left & Right Sway Bar/Arm to 139-5871 Mower Deck Clip Stud/Pin which Fasten to the Mower Deck - Installed into the Whole in the Clip Pin Stud/Pin) x1 Per Mower Deck Clip Pin Stud/Pin 137-9846 - MOWER DECK SWAY BAR/ARM (Right Side as You Sit on the Operator Seat) - (Attaches to the Mower Frame and Connects to the Mower Deck Lift Link and Mower Deck Stud/Pin) x1 Per Unit 137-9844 - MOWER DECK SWAY BAR/ARM (Left Side as You Sit on the Operator Seat) - (Attaches to the Mower Frame and Connects to the Mower Deck Lift Link and Mower Deck Stud/Pin) x1 Per Unit Specification Product Number: 1395871 Brand: Toro Length: 1.651 IN (4.194 CM) Width: 1.000 IN (2.540 CM) Height: 0.100 IN (0.254 CM) Weight: 0.088 LB (0.040 KG) Model Fit: TIMECUTTER TIMECUTTER 34” (STANDARD) Series – Model Numbers – 75734, 77301 TIMECUTTER 42” ZS Series – Model Numbers – 74677, 74683, 74685, 74687 TIMECUTTER 42” MX Series – Model Numbers – 74690, 74691 TIMECUTTER 42” 4200 & ZR 4200 Series – Model Numbers – 74679, 75740 TIMECUTTER 42” (STANDARD) Series – Model Numbers – 75741, 75742, 75744, 75746, 75748, 75749, 77401, 77404 TIMECUTTER 42” (My-Ride) Series – Model Numbers – 74692, 75743, 75745, 75747 TIMECUTTER 42” (Standard & My-Ride - Battery) Series – Model Numbers – 75841, 75642 TIMECUTTER 50” MX Series – Model Numbers – 74694, 74695 TIMECUTTER 50” 5000 Series – Model Numbers – 75751 TIMECUTTER 50” (STANDARD) Series – Model Numbers – 75750, 75753 TIMECUTTER 50” (My-Ride) Series – Model Numbers – 74696, 75755, 75759 TIMECUTTER 54” (My-Ride) Series – Model Numbers – 75754, 75756, 75757 TIMECUTTER 54” (My-Ride - Battery) Series – Model Numbers – 75851