NOVA IUNS Chuck Insert 1-1/8″ x 12TPIThe NOVA IUNS Chuck Insert 1-1/8″ x 12TPI allows you to adapt your Insert Type NOVA chuck to a 1 1/8″ 12TPI RH UNF lathe. Allows you to keep the same chuck and accessories if you change your lathe. You only need to change the insert/adpater. The internal thread is 1 1/8″ 12TPI RH and the external thread matches the NOVA insert type chucks to simply and easily screw into the back of your NOVA Insert Type Chuck. Now your NOVA insert type chuck is ready to attach to your 1 1/8″ 12TPI RH threaded lathe spindle.NOVA has a range of chucks along with inserts in order to fit the majority of lathes that are currently available on the market.The insert/adaptor versions of NOVA chucks all use the same insert/adaptor system to ensure maximum adaptability and flexibility for the user.HOW DOES THE INSERT SYSTEM WORK?The insert fits into the back of the chuck and onto your lathe headstock spindle. The inserts are threaded both inside and out. The outside thread is made to fit into the NOVA Chucks. The inside thread comes in a variety of sizes. The size you need is determined by your lathe spindle thread size. See the insert thread chart below.If you have reliable information for your spindle thread size but there is no match on the chart, you may have an unusual lathe that NOVA doesn’t have an adaptor for. You will need to purchase a blank chuck or a blank insert/adaptor and get it threaded to your requirements.Some thread sizes we direct thread into the chuck body. Therefore, these don’t require insert adaptors. A directly threaded chuck body cannot be altered to an insert type body or another thread size once threaded. Be sure that your lathe thread size is not covered by the insert/adaptors first!Terms: BSF: British Standard Fine BSW: British Standard Whitworth RH: Right hand LH: Left hand TPI: Threads per inch UN: Unified National Standard UNC: Unified Coarse Standard UNF: Unified Fine Standard UNS: Unified SpecialChuck Insert/AdaptorsThe thread sizes listed are the size which the adaptor converts to (e.g. The thread size listed in the table should match the thread size on your lathe spindle.) Click here if you don’t know your lathe spindle thread size. Sizes listed below are subject to change. Always best to check with your lathe manual and manufacturer.SKUThread Diam.PitchThread DirectionStandardCompatible LathesSet ScrewI2NSM202 RH Tyme CubI3NSM201.5 RH Electra Beckum, Multico SumaroI4NSM331.5 RH OneWay, Multico SumaroI6NS3/4″Plain Bore M6I7NS1 1/8″8TPIUN(NOT UNC)I8NS7/8″12TPILHNSI9NS3/4″16TPIRH(with 6mm register)IANS3/4″14TPIRHBSP TL1000 (pre 1986)IBNS3/4″14TPILHBSP TL1000 (pre 1986)ICNS1″10TPIRHBSF TL1000, Woodfast/DurdenIDNS1″8TPIRHUNC Delta, Rockwell, Golding, General, NOVA Comet (North America) and Mercury lathesIENS1″12TPIRHUNF Myford ML8 TurnstylerIHNS3/4″10TPIRHBSW Rockwell HomecraftIINSM243RH B-Line Arundel K600/K450IJNS1 1/8″12TPIRH BSW Myford Mystro Masterlathe (New Zealand)IKNSM182.5RH Elu DB 180ILNS1 1/4″8TPIRHNOVA Galaxi, NOVA Saturn, NOVA DVR 3000, NOVA XP, NOVA 1624 and 1624 II (North America) M6IMNS1″10TPILHBSF TL1000 Woodfast/DurdenINNSBlank (Can be threaded up to 28mm)IONS1 1/8″7TPIRHBSWMortonIQNSM303.5RHNOVA TL1500/3000/Comet (European & S. Hemisphere) WoodfastIRNS1″8TPIRHJet 1221 LatheISNS5/8″Plain BoreDesigned Specifically for Shopsmith Pro V and Power Pro Machines M6ITNS1″8TPIDual Threaded LH & RHNOVA Mercury Mini LatheIUNS1 1/8″12TPIRHUNFTaiwanese lathesIVNS7/8″14TPIRHNFIYNS1 1/4″8TPIRHFor lathes don’t have reverse turning abilityIWNSM252RH Tyme Avon (’83 on) and Classic Tanner SD165, Selbix Springwood, Sorby, CotechIXNS1″8TPIRHDesigned specifically for the NOVA Comet II Midi Lathe, features lock for the reverse function. M6
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