{"title":"NI Series Bearing Locknuts – Inch, 16 TPI","description":"\u003cp\u003eThe NI series is the bearing locknut for shafts cut to the 16 threads-per-inch National Fine series rather than the standard bearing thread. The finer pitch gives more turns per inch of travel and therefore finer preload resolution, and it is often what you will find on fractional-bore shafting. Each NI nut is matched to a WI series lockwasher.\u003c\/p\u003e\n\u003ch2\u003eNI Series Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart numbers:\u003c\/strong\u003e NI-01 through NI-18 (18 sizes stocked)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore \/ shaft size:\u003c\/strong\u003e 0.75 in to 3.75 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e 1.5 in to 5.25 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial \u0026amp; temperature:\u003c\/strong\u003e Carbon steel, black oxide finish; 300°F maximum operating temperature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e ANSI\/ABMA 8.2-1999; made in USA, RoHS compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eFractional-bore shafting in machine tools, spindles and rebuilt drives where the shaft carries a 16 TPI National Fine thread.\u003c\/p\u003e\n\u003ch2\u003eRelated Whittet-Higgins Series\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/wi-series-lockwasher-fractional-inch-series\"\u003eWI Series Bearing Lockwashers – 16 TPI\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/bhi-series-locknut-bearhug-16-tpi-threads\"\u003eBHI Series BEARHUG Locknuts – 16 TPI\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/basi-bast-series-bearing-assembly-sockets\"\u003eBASI \/ BAST Series Bearing Assembly Sockets – 16 TPI \u0026amp; Small Profile\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/n-series-locknut-sae\"\u003eN \/ AN Series Bearing Locknuts – Inch, SAE\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eApollo is an authorized Whittet-Higgins distributor. Every part on this page is genuine Whittet-Higgins, manufactured in the USA. Need a size that is not listed, or help matching a locknut to its lockwasher and assembly socket? \u003ca href=\"\/pages\/contact\"\u003eContact our team\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"whittet-higgins-ni-01","title":"Whittet Higgins NI-01 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-01 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-01 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089079958,"sku":null,"price":10.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-02","title":"Whittet Higgins NI-02 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-02 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-02 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089112726,"sku":null,"price":11.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-03","title":"Whittet Higgins NI-03 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-03 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-03 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089145494,"sku":null,"price":12.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-04","title":"Whittet Higgins NI-04 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-04 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-04 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089178262,"sku":null,"price":12.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-05","title":"Whittet Higgins NI-05 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-05 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-05 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089211030,"sku":null,"price":14.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-06","title":"Whittet Higgins NI-06 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-06 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-06 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089243798,"sku":null,"price":14.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-07","title":"Whittet Higgins NI-07 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-07 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-07 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089276566,"sku":null,"price":16.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-08","title":"Whittet Higgins NI-08 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-08 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-08 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089309334,"sku":null,"price":17.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-09","title":"Whittet Higgins NI-09 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-09 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-09 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089342102,"sku":null,"price":18.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-10","title":"Whittet Higgins NI-10 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-10 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-10 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089374870,"sku":null,"price":20.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-11","title":"Whittet Higgins NI-11 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-11 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-11 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089407638,"sku":null,"price":24.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-12","title":"Whittet Higgins NI-12 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-12 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-12 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089440406,"sku":null,"price":24.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-13","title":"Whittet Higgins NI-13 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-13 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-13 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089473174,"sku":null,"price":29.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-14","title":"Whittet Higgins NI-14 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-14 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-14 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089505942,"sku":null,"price":33.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-15","title":"Whittet Higgins NI-15 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-15 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-15 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089538710,"sku":null,"price":103.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-16","title":"Whittet Higgins NI-16 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-16 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-16 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089571478,"sku":null,"price":116.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-17","title":"Whittet Higgins NI-17 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-17 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-17 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089604246,"sku":null,"price":122.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"},{"product_id":"whittet-higgins-ni-18","title":"Whittet Higgins NI-18 Locknut","description":"\u003cp\u003eThe Whittet-Higgins NI-18 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from vibration, shock, and torque.\u003c\/p\u003e\u003cp\u003eEngineered for high axial loading applications, the NI-18 installs with no special tools and works effectively on both soft and hardened shafts. It is rated for operating temperatures up to 300°F, is manufactured in the USA, and is RoHS compliant.\u003c\/p\u003e","brand":"Whittet-Higgins","offers":[{"title":"Default Title","offer_id":46304089637014,"sku":null,"price":129.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/1241\/4779\/files\/UntitledProject_4__Camera_SOLIDWORKSViewport.png?v=1772592697"}],"url":"https:\/\/apollousa.com\/collections\/ni-series-bearing-locknuts-16-tpi.oembed","provider":"Apollo Industries ","version":"1.0","type":"link"}