Vessel 910S4100 MEGADORA Thin Shank Slotted 4 mm Screwdriver (910S4100)

Key Features Precision 4mm Shank A 4mm shank diameter reaches slotted screws where a standard-width driver is too thick to seat cleanly or would mar the surrounding surface. Black-Point Precision Tip Vessel finishes the tip with a high-precision black-point grind stated to be unaffected by plating thickness, so it seats consistently in plated screw slots instead of riding up out of them. 100mm Shank for Reach A 100mm shank length gets into recessed slotted fasteners that a shorter precision driver can't reach. Overview This is a precision slotted screwdriver designed for electronics, instrument, and fine-mechanical work where a standard-width blade is too thick to do the job cleanly. The Vessel 910S4100 MEGADORA Thin Shank Screwdriver carries a slotted (SL4) tip on a narrow 4mm shank, built for screws in tight or delicate assemblies rather than general hand tool work. Vessel describes this as a "precision type" driver, purpose-built for 4mm or smaller blade diameters - a category apart from its Standard and Tang-Thru MEGADORA lines, which use thicker shanks meant for higher-torque driving. The tip carries a black-point finish that Vessel states holds up regardless of plating thickness on the screw itself, which matters on small plated fasteners where a driver can otherwise slip up out of the slot. Specs on this model: a 0.5mm tip thickness, 4mm shank diameter, 100mm shank length, 21mm grip diameter, and 178mm overall length. That's a longer reach than the shorter 75mm version in the same Thin Shank line, without stepping up to the 150mm or 200mm lengths meant for deeper recesses. This driver is a fit for electronics assembly and repair, instrument work, and any task involving small plated slotted screws where a general-purpose screwdriver's blade is simply too wide to seat in the slot without camming out or scarring the surrounding surface. Purpose-Built for Slotted 4mm Screws Vessel built the Thin Shank line specifically for blade diameters of 4mm or smaller - a size standard-width screwdrivers don't offer - so this driver seats into narrow slotted screws without the shank crowding the surrounding hardware. Slotted (SL4) tip, 0.5mm tip thickness 4mm shank diameter, 100mm shank length, 178mm overall Key Specifications Tip Type Slotted (SL4) Tip Thickness 0.5 mm Shank Diameter 4 mm Shank Length 100 mm Grip Diameter 21 mm Overall Length 178 mm Warranty 3-Year (Vessel brand screwdrivers) Built For Electronics AssemblyInstrument & Precision RepairSmall Appliance ServiceHobby & Model Building Pro Tip This is a precision driver, not a pry bar - the thin 4mm shank is sized for delicate, plated slotted screws, not for prying or high-torque general fastening. For everyday slotted work, reach for a standard-width MEGADORA driver instead and save this one for the small stuff. Warranty & Support Vessel covers this screwdriver under its standard 3-Year warranty for Vessel-brand screwdrivers, requiring proof of purchase through an authorized dealer. Tool Nut's Take Tool Nut's Take The Right Size for the Job a Standard Driver Can't Do The Vessel 910S4100 exists for the exact moment a normal slotted screwdriver is too fat for the screw in front of you. Who it's for: Electronics techs, instrument repair, and anyone working plated slotted screws too small for a general-purpose driver. Why it stands out: A dedicated 4mm shank and black-point tip built specifically for precision work, not a scaled-down general driver. Worth knowing: Data on this exact SKU is limited outside Vessel's own spec sheet - weight and country of origin aren't published, and it's a single driver, not a set, so plan tip coverage accordingly if you need multiple sizes. Common Questions What does "SL4" mean on this screwdriver? Slotted tip, 4mm shank diameter - Vessel's designation for this size in the Thin Shank line. How is the Thin Shank line different from Vessel's Standard MEGADORA screwdrivers? The Thin Shank series uses a narrower 4mm-or-smaller shank diameter for precision work, versus the thicker shanks on Vessel's Standard and Tang-Thru lines meant for general and higher-torque driving. Is this screwdriver covered under warranty? Yes - it falls under Vessel's standard 3-Year warranty for Vessel-brand screwdrivers. At a Glance 4mm Shank Diameter 100mm Shank Length 178mm Overall Length