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The JET EQUIPMENT JT9-5640041 is a flat washer designed as a replacement component for JET disc and disc/belt sander units. Measuring 10mm, this washer provides the clamping and load-distribution function required to keep sanding assemblies properly secured during operation. It is a direct OEM-style replacement intended for technicians and shop maintenance personnel performing routine repairs or part swaps on JET stationary sanding equipment. The part ships individually and is suited for both professional shop environments and trade maintenance programs.
This washer is specified for use with JET sander models that require a 10mm flat washer at sanding disc or drive assembly mounting points. It is typically installed during scheduled maintenance, after component wear, or as part of a broader repair involving the sanding disc or spindle assembly. Shops running production grinding and sanding operations benefit from keeping OEM replacement hardware on hand to minimize downtime.
Specified for use with the JET 4002 (9078321) 8-inch Disc Sander and the J-4002 (577003) Disc/Belt Sander.
Installation should be performed by a qualified technician familiar with stationary power tool repair. Disconnect and lock out the sander from its power source before disassembling any spindle or disc mounting hardware. Use hand tools appropriate for the fastener size and do not overtighten fasteners beyond the equipment manufacturer's assembly specifications. Refer to the applicable JET service documentation for the correct assembly sequence.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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