{"product_id":"genuine-simanco-singer-pressure-regulating-thumb-screw-part-51228-blackside","title":"Genuine SIMANCO Singer Pressure Regulating Thumb Screw Part # 51228 - Blackside","description":"\u003ch3\u003eGenuine Vintage Singer Pressure Regulating Thumb Screw - Part # 51228 - Blackside\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine original SIMANCO pressure regulating thumb screw\u003c\/strong\u003e (commonly called presser foot adjuster) is an essential component that controls the amount of pressure applied to the presser foot in your vintage Singer sewing machine. SIMANCO (Singer Manufacturing Company) stamped parts represent authentic Singer quality and precision engineering. In excellent pre-owned condition with the distinctive \u003cstrong\u003eBlackside finish\u003c\/strong\u003e, this authentic Singer part is a piece of WWII-era sewing machine history.\u003c\/p\u003e\u003ch4\u003eWhat is \"Blackside\"?\u003c\/h4\u003e\u003cp\u003eThe \"Blackside\" finish refers to vintage Singer parts produced during and shortly after World War II that feature a distinctive \u003cstrong\u003eblack oxide finish\u003c\/strong\u003e rather than the standard bright chrome or nickel plating. During WWII, metals like chromium and nickel were in high demand for the war effort and restricted for civilian use. Singer adapted by using a chemical black oxide treatment (similar to bluing or Parkerizing used on firearms) to create a durable, non-reflective black finish. These Blackside parts are highly collectible and tell a unique story of wartime adaptation.\u003c\/p\u003e\u003ch4\u003eWhat the Pressure Regulating Thumb Screw Does\u003c\/h4\u003e\u003cp\u003eThe pressure regulating thumb screw is a critical adjustment component in the presser foot pressure system:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls Pressure:\u003c\/strong\u003e Adjusts the amount of pressure the presser foot applies to fabric during sewing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFabric Customization:\u003c\/strong\u003e Allows you to increase pressure for heavy fabrics or decrease pressure for delicate materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with Spring:\u003c\/strong\u003e Regulates the tension of the presser bar spring (part #80011) to fine-tune pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnsures Proper Feeding:\u003c\/strong\u003e Correct pressure adjustment ensures even fabric feeding and professional stitch quality\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhen to Replace Your Pressure Regulating Thumb Screw\u003c\/h4\u003e\u003cp\u003eCommon issues requiring thumb screw replacement include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStripped Threads:\u003c\/strong\u003e Threads become worn or damaged, preventing proper adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamaged Knob:\u003c\/strong\u003e Thumb screw knob becomes damaged or difficult to turn\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMissing Part:\u003c\/strong\u003e Lost during machine disassembly or restoration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestoration Projects:\u003c\/strong\u003e Replacing worn or damaged components to restore vintage machines to working condition, especially for collectors seeking authentic Blackside parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Singer Models\u003c\/h4\u003e\u003cp\u003e15-86, 15-87, 15-88, 15-89, 15-90, 15-91, 15-96, 15-97, 201, 201-2, 201K\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 51228\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel with black oxide finish (Blackside)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Blackside (WWII-era black oxide finish - highly collectible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Pre-owned, excellent condition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthenticity:\u003c\/strong\u003e Genuine original SIMANCO (Singer Manufacturing Company) part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHistorical Significance:\u003c\/strong\u003e WWII-era Blackside finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eGenuine vintage SIMANCO pressure regulating thumb screw in excellent pre-owned condition with collectible Blackside finish. Essential replacement for stripped or damaged presser foot adjusters with authentic WWII-era styling.\u003c\/em\u003e\u003c\/p\u003e","brand":"CMSS","offers":[{"title":"Default Title","offer_id":8098338537570,"sku":"VO430","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/4681\/files\/IMG_0524-Photoroom.jpg?v=1762527053","url":"https:\/\/www.vintagesingerparts.com\/en-nz\/products\/genuine-simanco-singer-pressure-regulating-thumb-screw-part-51228-blackside","provider":"Central Michigan Sewing Supplies","version":"1.0","type":"link"}