Genuine Bosch Clamp Screw — Part No. 2603400000. This original Bosch blade-clamping screw secures the jigsaw blade in the blade shaft so the saw cuts safely and reliably; it’s the exact replacement when the small clamp screw is lost or worn.

Details: pan-head, cross-recess (DIN 7985) machine screw, nominal size M4 × 18 mm — the same metric screw Bosch fits in the GST/PST jigsaw blade clamp.

Fits: designed for Bosch GST and PST series jigsaws — commonly used in models such as PST 50 / PST 50 A, PST 52, PST 53, PST 54, GST 12 V, GST 60/65 series and GST 80 variants (check your tool’s type number to confirm compatibility).

Easy to replace: one small slotted/Phillips screwdriver tightens the clamp into place; sold individually so you can replace the exact part and get your jigsaw back in service quickly.

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