Original Bosch 2603320001 — Square nut (fits M4 thread) for power-tool assemblies.

This compact four-sided (square) nut is made to engage an M4 metric screw and sit in a square recess so the nut won’t rotate while you tighten the mating fastener — a simple part that restores secure clamping where small internal fasteners are used.

Fits a range of Bosch power tools; examples listed for this part include several jigsaw and sander models (for example the 1581 series / 0601581003 and 0601581033 jigsaws) and certain straight grinders and orbital sanders (for example 0601204003 and 0601288033). Other models include : GST 85 PB / GST 60 PBE / GST 2000 and POF 50

Sold individually and made to the same specifications Bosch uses in production, the original Bosch 2603320001 square nut is an easy, direct-fit replacement to get worn or missing fasteners back to factory fit and alignment—ideal when you need the correct part to finish a repair.

Note: Check your 10 digit version number from off the side of the machine before purchasing Bosch spare parts.

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