Rotary 918 PK10 Shear Pins and Nuts Replaces: Ariens 532005, 53200500; John Deere AM123342 Price is for 10 Shear Pins and 10 nuts. 1-9/16" X 1/4" thread with lock nut. (1-7/16" to head) Fits: Ariens Compact Snowthrowers, ST524, ST624, ST724, ST824, and ST520