Briggs & Stratton OEM Screws part# 596718. Compatible with: 21R707-0133-B1, 21R707-0134-B1, 21R707-0136-F1, 21R707-0137-F1, 21R707-0138-F1, 21R777-0135-B1, 21R806-0079-F1, 21R807-0072-G1, 21R807-0074-B1, 21R807-0075-H1, 21R807-0076-B1, 21R807-0080-F1, 21R876-0081-F1, 21R877-0073-B1, 21R877-0077-B1, 21R877-0078-B1, 31R577-0038-B1, 31R707-0048-G1, 31R707-0049-B1, 31R707-0050-B1, 31R777-0043-B5, 31R777-0045-B1, 31R777-0046-B1, 31R777-0047-G1, 31R877-0033-B1, 31R877-0034-B1, 31R907-0059-G1, 31R977-0054-G1, 31R977-0056-G1, 31R977-0057-G1, 31R977-0058-B1, 31R977-0060-G1, 33R877-0029-G1, 33R877-0030-B1, 33R877-0031-G1, 33R877-0032-G1, 592054, 592055, 592056, 592057, 592058, 592059, 592060