Check the listing for details. 5" 2-1/4"-8 Threaded Back Plate for ER40 Zero Set Adjustment Collet Chuck NEW #. Condition: New. Listed at 62.95 USD. Shars 5" 2-1/4"-8 Threaded Back Plate for ER40 Zero Set Adjustment Collet Chuck NEW Product Code 202-7045 Product description SKU 202-7045 MFG SKU # 202-7045 LATHE CHUCK CATEGORY Back Plates Threaded Mounting BRAND Shars Tool BACK PLATE DIAMETER 5.00 SPINDLE NOSE TYPE Threaded COMPATIBLE CHUCK DIAMETER 5 MOUNTING 2-1/4 - 8 Product features Bolt circle diameter: 4.25" Adapter boss diameter: 2.26" Adapter boss height: 0.53" 3 Mounting holes is already drill and tapped on the back plate to match the 5" ER40 zero set adjustment collet chuck. A light skim cut is required on the adapter boss OD and the face of the adapter's contact area. The clearance between adapter boss OD and the chuck counterbore ID should be from 0.0078" to 0.0129". The adapter boss nose should not be in contact with the bottom of the chuck counterbore. The gap between the adapter boss and the bottom of the counterbore should be around 0.0787". Related Product SKU#: 202-1209 5" ER40 Zero Set Fine Adjustment Collet Chuck We have more LATHE CHUCKS available: All Available to Ship NOW! at Fixed Prices SHIPPING: UPS Ground Buyer pays ACTUAL UPS shipping & insurance, and a $3.00 handling fee for this item to be shipped to all states within the continental United States. Hawaii, Alaska & and other United States Territories will ship via UPS BLUE. Canada will pay actual shipping costs plus duty fees via UPS. We can combine other auctions or store items to save on shipping. You may ask for freight cost before buying tools. Shipment will be made the same day as your payment is received and an UPS tracking number will be email to you. If your order is being shipped to an address outside of the United States, local consumer tax and/or customs duty , brokerage charges may apply and the package's recipient may need to pay these to clear customs. If you need to speak to a sales person feel free to call. We are open Monday through friday 8:30 to 5:00 est. Phone:1-630-443-3244 Email: discountmachineshop@gmail.com click here to visit my Ebay store now PAYMENT: We accept VISA, MasterCard and E-Check on PayPal.com Illinois resident adds 8% sales tax. RETURNS: If the item stated as brand new is found defective on arrival or incorrect item was shipped, buyer understands that the product will be repaired or replaced at seller's discretion, and be given a reasonable amount of time. Buyer is responsible for return shipping costs and insurance. Warranties are offered by the manufacturer and will be honored by the manufacturer. All shipping and handling fees will not be returned in any case. Any questions regarding our tools, feel free to email us at discountmachineshop@gmail.com