{"product_id":"regulating-screw-662-shuttle-hook-tension-adjustment-singer-29k-29u","title":"Regulating Screw #662 - Shuttle Hook Tension Adjustment | Singer 29K, 29U","description":"\u003cp\u003eReplacement regulating screw — Part #662. A precision metal tension adjustment screw for the shuttle hook assembly on Singer 29K and 29U industrial shoe patcher (cobbler) machines. Sold individually.\u003c\/p\u003e\u003cp\u003eWorks in tandem with Tension Spring #8611 to control bobbin thread pressure as it exits the shuttle hook. Adjusting this screw increases or decreases spring pressure for balanced upper and lower thread tension on leather and heavy materials.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This screw is small and frequently lost during cleaning or maintenance — keeping a spare on hand prevents downtime.\u003c\/p\u003e\u003ch2\u003eRelated Parts\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTension Spring — Part #8611\u003c\/li\u003e\n\u003cli\u003eShuttle Hook — Part #8603 (small bobbin)\u003c\/li\u003e\n\u003cli\u003eFor 15 Class race cap springs, see variant 662S\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSinger 29-1\u003c\/li\u003e\n\u003cli\u003eSinger 29K71, 29K73\u003c\/li\u003e\n\u003cli\u003eSinger 29K171, 29K171A\u003c\/li\u003e\n\u003cli\u003eSinger 29U171A, 29U173A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DMN","offers":[{"title":"Default Title","offer_id":42561617559650,"sku":"662","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/4681\/files\/enhanced-small-screw-product-photo.png?v=1771007057","url":"https:\/\/www.vintagesingerparts.com\/products\/regulating-screw-662-shuttle-hook-tension-adjustment-singer-29k-29u","provider":"Central Michigan Sewing Supplies","version":"1.0","type":"link"}