Tool Drives & Bit Shanks

Circular saw blade arbors (center mounting bore holes) are standardized into 5/8-inch (15.88 mm with diamond knockout for worm-drive saws), 1-inch (25.4 mm for table/miter saws), 20 mm, and 30 mm (European standard), paired with Alternate Top Bevel (ATB) or Triple Chip Grind (TCG) tooth geometries.

Drill bit shanks are standardized under ISO 296, DIN 338, and proprietary power tool systems into Straight Round Shanks, 1/4" Quick-Change Hex Shanks (ISO 1173), SDS-Plus (10 mm / 2-groove), SDS-Max (18 mm / 3-groove), and Morse Taper (MT1–MT5) industrial spindle shanks.

Woodworking router collets and CNC machining spindles use precision slotted spring chucks standardized into fractional inch (1/4", 1/2") and metric (6 mm, 8 mm, 12 mm) wood router standards, alongside industrial ER Collets (ER11 to ER40, DIN 6499) with radial runout tolerances under 0.005 mm.

Square socket drives are standardized under ISO 1174-1 and ASME B107 into five standardized fractional inch drive square tiers: 1/4-inch, 3/8-inch, 1/2-inch, 3/4-inch, and 1-inch, each defining maximum safe working torque limits, retaining ball detent locations, and pin-hole locks.

Welding filler metals are standardized under American Welding Society (AWS) and ISO specifications into MIG solid wires (.023", .030", .035", .045" / 0.6–1.2 mm), Stick SMAW electrodes (AWS E6010, E6013, E7018 from 3/32" to 5/32"), and TIG tungsten color-coded alloy classifications.