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Department · 6 products

Screwdrivers & Precision Drivers

JIS, Phillips, slotted and precision

What to know

The distinction that matters here is JIS versus Phillips. Japanese fasteners are cut to JIS B 4633, which has a slightly different flank angle and no cam-out ramp. A Phillips driver in a JIS screw will cam out and round the head; a JIS driver seats fully and drives it. Most electronics, motorcycles and Japanese machinery use JIS. If you have ever destroyed a screw head on a camera body or a carburettor, this is why.

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