{"product_id":"premium-replacement-check-spring-9100681405-for-pfaff-463-sewing-machine","title":"Premium Replacement Check Spring 9100681405 for Pfaff 463 Sewing Machine","description":"\u003cp\u003ePremium Replacement The 91-006814-05 Check Spring (also known as a take-up spring or controller spring) is a vital tension component for the Pfaff 463 industrial lockstitch series. This precision-coiled spring is responsible for maintaining slight tension on the needle thread as the take-up lever descends, ensuring the thread does not go slack and cause tangles, skipped stitches, or \"bird-nesting\" at the start of a seam.\u003c\/p\u003e\n\n\u003cp\u003eKey Features \u0026amp; Performance\u003cbr\u003e\nConsistent Loop Control: Provides the exact amount of \"flick\" needed to pull up excess thread as the needle enters the fabric, leading to perfectly balanced stitches.\u003c\/p\u003e\n\n\u003cp\u003ePrecision Tempered Steel: Manufactured from high-tensile spring steel to ensure it retains its shape and \"memory\" over millions of high-speed cycles.\u003c\/p\u003e\n\n\u003cp\u003eDirect Pfaff 463 Fitment: Engineered to fit the standard tension post assembly of the Pfaff 463 series, ensuring the correct rotational travel and stop position.\u003c\/p\u003e\n\n\u003cp\u003eFriction-Reducing Finish: Features a smooth surface to prevent thread snagging or fraying, even when using delicate or high-twist industrial threads.\u003c\/p\u003e","brand":"Universal\/Generic","offers":[{"title":"Default Title","offer_id":48268030836985,"sku":"6814","price":4.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/6733\/3113\/files\/Pfaff_Premium_Replacement_Parts.jpg?v=1775106965","url":"https:\/\/empenzoamericas.com\/products\/premium-replacement-check-spring-9100681405-for-pfaff-463-sewing-machine","provider":"Empenzo Americas Corp.","version":"1.0","type":"link"}