JIS Cross vs. Slotted
Comparing 2 standards across 11 specifications. 11 key differences identified.
JIS B 1012 is a Japanese Industrial Standard cruciform screw drive commonly found on Japanese motorcycles (Honda, Yamaha, Kawasaki, Suzuki), cameras, and consumer electronics. Visually similar to Phillips, it features a shallower center pit and parallel 90-degree cross-wings engineered not to cam out, which easily strip when turned with standard Phillips screwdrivers.
The Slotted drive (Flat Head / Flat Blade) is the original single-slot fastener drive geometry standardized under ISO 2380 and DIN 963. Operated with a flat screwdriver blade, it features no inherent centering or cam-out retention, making it susceptible to tool slippage and strictly limited to manual assembly and decorative restoration.
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Cam-Out Tendency
|
Zero (Engineered to stay fully seated under high torque) | Extremely High (Tends to climb up and out of slot under torque) |
|
Standard Specification
|
JIS B 1012 (Cruciform cross-recessed screws) | — |
|
Visual Identification
|
A single small raised circular dimple or dot stamped into the head face | — |
|
Flank Geometry
|
Parallel cross walls with a flat, shallow bottom recess (no cam-out slope) | — |
|
Common Sizing Tiers
|
JIS #000, JIS #00, JIS #0, JIS #1, JIS #2, JIS #3 | — |
|
Primary Applications
|
Japanese motorcycles (engine cases, carburetors), Shimano bicycle components, Nikon/Canon cameras | — |
|
Standard Specifications
|
— | ISO 2380 (Screwdrivers) / DIN 963 / ASME B18.6.3 |
|
Drive Geometry
|
— | Single linear rectangular slot through head center |
|
Self-Centering Capability
|
— | None (Driver freely slides laterally out of slot) |
|
Power Tool Suitability
|
— | Unsuitable (High risk of workpiece scratching / bit slippage) |
|
Primary Modern Applications
|
— | Antique furniture restoration, electrical switch wallplates, plumbing fixtures |