{"product_id":"12-9-us-cylindrical-end-fine-tooth-fastening-imperial-headless-spherical-machine-rice-screw-1-4-28-unf","title":"12.9 Grade 1\/4-28 UNF Screw US Imperial Fine Thread Headless Spherical Cylindrical End Machine Screw","description":"\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eEngineered for precision US imperial fastening, our \u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: start; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e12.9 Grade 1\/4-28 UNF Headless Spherical Cylindrical End Machine Screw\u003c\/strong\u003e integrates industrial-grade strength, fine-thread stability, and a low-profile design to excel in rigorous mechanical and assembly scenarios. As a compliant US imperial fastener with 1\/4-28 UNF fine threading, it features a headless structure paired with a spherical cylindrical end—delivering concealed installation, enhanced workpiece contact, and reliable clamping force for space-constrained or aesthetically demanding projects.\u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003ch4 style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eCore Features \u0026amp; Benefits\u003c\/h4\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cul style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\t\u003cli style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: list-item; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: left; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e12.9 Grade High-Strength Alloy Steel\u003c\/strong\u003e: Crafted from premium 12.9 grade alloy steel, this screw boasts exceptional tensile and shear strength, ranking among the top industrial fastener grades. It resists deformation and fatigue even under heavy loads and high stress, ensuring long-term durability in critical applications.\u003c\/li\u003e\n\t\u003cli style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: list-item; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: left; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e1\/4-28 UNF US Imperial Fine Thread\u003c\/strong\u003e: Adheres strictly to US imperial 1\/4-28 UNF fine thread standards, offering superior vibration resistance and precise locking compared to coarse threads. It seamlessly fits US imperial nuts, taps, and fixtures, making it ideal for precision assemblies that require stable, non-loosening fastening.\u003c\/li\u003e\n\t\u003cli style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: list-item; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: left; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eHeadless Spherical Cylindrical End Design\u003c\/strong\u003e: The headless construction enables flush, concealed installation without protrusions, preserving surface flatness and aesthetics. The spherical cylindrical end enhances contact with workpieces, distributing pressure evenly to reduce wear and improve clamping stability.\u003c\/li\u003e\n\t\u003cli style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: list-item; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: left; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003ePrecision-Machined for Smooth Installation\u003c\/strong\u003e: Each screw undergoes precision machining to ensure consistent thread accuracy and a smooth spherical end. This allows for effortless insertion and secure tightening, even in confined spaces, while minimizing damage to workpieces during assembly.\u003c\/li\u003e\n\t\u003cli style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: list-item; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e\n\u003cstrong style='color: rgb(31, 35, 41); font: 700 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 700; line-height: 24px; text-align: left; white-space: normal; display: inline; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eVersatile Industrial Applications\u003c\/strong\u003e: Perfect for automotive engineering, heavy machinery, CNC equipment, precision instruments, and industrial maintenance. It caters to professionals seeking US imperial fasteners that balance high strength, space-saving design, and reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003ch4 style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eSpecifications\u003c\/h4\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: start; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eGrade: 12.9 High-Strength Alloy Steel\u003cbr\u003e\nThread Standard: US Imperial 1\/4-28 UNF (Fine Thread)\u003cbr\u003e\nDesign: Headless with Spherical Cylindrical End\u003cbr\u003e\nType: Machine Screw\u003cbr\u003e\nApplication: Industrial Fastening, Precision Assemblies, US Imperial Compatibility.\u003c\/div\u003e\n","brand":"Vichok Hardware","offers":[{"title":"1\/4-28 * 1-1\/2 (10pcs) spherical surface","offer_id":46599118291121,"sku":"SCR00045-1\/4-28x1-1\/2","price":2.74,"currency_code":"USD","in_stock":true},{"title":"3\/8-16 * 5\/8 (350 pieces)","offer_id":46599118323889,"sku":"SCR00045-3\/8-16x5\/8","price":39.68,"currency_code":"USD","in_stock":true},{"title":"7\/16-14 * 7\/8 (300 pieces)","offer_id":46599118356657,"sku":"SCR00045-7\/16-14x7\/8","price":185.3,"currency_code":"USD","in_stock":true},{"title":"5\/8-11 * 1-1\/4 (600 pieces)","offer_id":46599118389425,"sku":"SCR00045-5\/8-11x1-1\/4","price":339.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/7466\/1297\/files\/02b88dd9a8a556fe799c3fb252f71a08.jpg?v=1769152038","url":"https:\/\/vichokhardware.com\/products\/12-9-us-cylindrical-end-fine-tooth-fastening-imperial-headless-spherical-machine-rice-screw-1-4-28-unf","provider":"Vichok Hardware","version":"1.0","type":"link"}