DESCRIPTION Self Tapping Screw. Fits AYP, Models PP 18HP, 44" 9540052-61 Quill Assembly. Mounting Bolt for Rotary's # 8479 Quill Assembly. REPLACES OEM AYP/ROPER/SEARS 138776, 157722, 173984, 532173984, 584953901 SPECS THREAD LENGTH 1-1/4"THREAD SIZE 5/16"-18.
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