{"product_id":"bobbin-case-part-45751-singer-featherweight-301-series","title":"Bobbin Case – Part #45751 | Singer Featherweight \u0026 301 Series","description":"\u003cp data-start=\"189\" data-end=\"332\"\u003eRestore smooth, consistent stitching with this \u003cstrong data-start=\"236\" data-end=\"265\"\u003ebobbin case (Part #45751)\u003c\/strong\u003e, designed for Singer Featherweight and 301 series sewing machines.\u003c\/p\u003e\n\u003cp data-start=\"334\" data-end=\"624\"\u003eThis bobbin case is a \u003cstrong data-start=\"356\" data-end=\"395\"\u003estandard OEM-compatible replacement\u003c\/strong\u003e, built to provide reliable lower thread tension and consistent stitch formation. It’s ideal for replacing worn, damaged, or inconsistent bobbin cases to eliminate common sewing issues like looping, nesting, and skipped stitches.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1s1yvt8\" data-start=\"626\" data-end=\"647\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"630\" data-end=\"647\"\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"648\" data-end=\"867\"\u003e\n\u003cli data-section-id=\"ql0iuy\" data-start=\"648\" data-end=\"690\"\u003e✔️ OEM-compatible standard bobbin case\u003c\/li\u003e\n\u003cli data-section-id=\"1l0avp6\" data-start=\"691\" data-end=\"735\"\u003e✔️ Maintains proper lower thread tension\u003c\/li\u003e\n\u003cli data-section-id=\"10fmqbn\" data-start=\"736\" data-end=\"780\"\u003e✔️ Helps prevent thread jams and nesting\u003c\/li\u003e\n\u003cli data-section-id=\"14kvfl5\" data-start=\"781\" data-end=\"827\"\u003e✔️ Designed for Singer rotary hook systems\u003c\/li\u003e\n\u003cli data-section-id=\"91ep5y\" data-start=\"828\" data-end=\"867\"\u003e✔️ Ideal for maintenance and repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"869\" data-end=\"872\"\u003e\n\u003ch2 data-section-id=\"18fxkdn\" data-start=\"874\" data-end=\"894\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"877\" data-end=\"894\"\u003eCompatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-section-id=\"130b8ta\" data-start=\"896\" data-end=\"951\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"900\" data-end=\"951\"\u003eGuaranteed to Fit Singer Sewing Machine Models:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"952\" data-end=\"1015\"\u003e221 Featherweight\u003cbr data-start=\"969\" data-end=\"972\"\u003e221-1\u003cbr data-start=\"977\" data-end=\"980\"\u003e222\u003cbr data-start=\"983\" data-end=\"986\"\u003e301\u003cbr data-start=\"989\" data-end=\"992\"\u003e301-1\u003cbr data-start=\"997\" data-end=\"1000\"\u003e301A\u003cbr data-start=\"1004\" data-end=\"1007\"\u003e491UTT\u003c\/p\u003e\n\u003chr data-start=\"1017\" data-end=\"1020\"\u003e\n\u003ch3 data-section-id=\"18bno94\" data-start=\"1022\" data-end=\"1071\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1026\" data-end=\"1071\"\u003eAlso Fits Alphasew Sewing Machine Models:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1072\" data-end=\"1077\"\u003e221\u003c\/p\u003e\n\u003chr data-start=\"1079\" data-end=\"1082\"\u003e\n\u003ch2 data-section-id=\"1tuv18y\" data-start=\"1084\" data-end=\"1113\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1087\" data-end=\"1113\"\u003eAlternate Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1115\" data-end=\"1140\"\u003e45750 (generic version)\u003c\/p\u003e\n\u003chr data-start=\"1142\" data-end=\"1145\"\u003e\n\u003ch2 data-section-id=\"5f5awq\" data-start=\"1147\" data-end=\"1175\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1150\" data-end=\"1175\"\u003eWhy This Part Matters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1177\" data-end=\"1217\"\u003eA worn or damaged bobbin case can cause:\u003c\/p\u003e\n\u003cul data-start=\"1218\" data-end=\"1324\"\u003e\n\u003cli data-section-id=\"5z2h4v\" data-start=\"1218\" data-end=\"1249\"\u003eThread nesting under fabric\u003c\/li\u003e\n\u003cli data-section-id=\"838kx8\" data-start=\"1250\" data-end=\"1283\"\u003eInconsistent or loose tension\u003c\/li\u003e\n\u003cli data-section-id=\"1t4xbdr\" data-start=\"1284\" data-end=\"1304\"\u003eSkipped stitches\u003c\/li\u003e\n\u003cli data-section-id=\"12rrhtm\" data-start=\"1305\" data-end=\"1324\"\u003eThread breakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1326\" data-end=\"1429\"\u003eReplacing your bobbin case restores \u003cstrong data-start=\"1362\" data-end=\"1428\"\u003ebalanced tension, smoother stitching, and reliable performance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"1431\" data-end=\"1434\"\u003e\n\u003ch2 data-section-id=\"elc90z\" data-start=\"1436\" data-end=\"1446\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1439\" data-end=\"1446\"\u003eFAQ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1448\" data-end=\"1587\"\u003e\u003cstrong data-start=\"1448\" data-end=\"1482\"\u003eQ: Is this an OEM Singer part?\u003c\/strong\u003e\u003cbr data-start=\"1482\" data-end=\"1485\"\u003eA: This is a \u003cstrong data-start=\"1498\" data-end=\"1551\"\u003ehigh-quality OEM-compatible (generic) replacement\u003c\/strong\u003e, not a genuine Singer-branded part.\u003c\/p\u003e\n\u003cp data-start=\"1589\" data-end=\"1740\"\u003e\u003cstrong data-start=\"1589\" data-end=\"1633\"\u003eQ: Will this fit Featherweight machines?\u003c\/strong\u003e\u003cbr data-start=\"1633\" data-end=\"1636\"\u003eA: Yes — it is designed for \u003cstrong data-start=\"1664\" data-end=\"1707\"\u003eSinger 221 and 222 Featherweight models\u003c\/strong\u003e, along with 301 series machines.\u003c\/p\u003e\n\u003cp data-start=\"1742\" data-end=\"1889\"\u003e\u003cstrong data-start=\"1742\" data-end=\"1778\"\u003eQ: Will this fix tension issues?\u003c\/strong\u003e\u003cbr data-start=\"1778\" data-end=\"1781\"\u003eA: In many cases, yes. A worn bobbin case is one of the most common causes of lower thread tension problems.\u003c\/p\u003e\u003cdiv style=\"margin-top:32px; padding-top:18px; border-top:1px solid #e5e5e5; font-size:14px; line-height:1.7;\"\u003e\u003cp\u003eLooking for more replacement parts for your machine? Browse our \u003ca href=\"https:\/\/threadworks.com\/collections\/parts\"\u003efull sewing machine parts collection\u003c\/a\u003e or shop \u003ca href=\"https:\/\/threadworks.com\/collections\/singer-parts\"\u003eSinger parts\u003c\/a\u003e to find compatible components, accessories, and machine-specific repair parts.\u003c\/p\u003e\u003c\/div\u003e","brand":"Singer","offers":[{"title":"Default Title","offer_id":45499682521190,"sku":null,"price":49.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/7872\/8294\/files\/45751_jpg.webp?v=1776729605","url":"https:\/\/threadworks.com\/products\/bobbin-case-part-45751-singer-featherweight-301-series","provider":"Thread Works ","version":"1.0","type":"link"}