Bosch Ratchet 1600A03AC8, 1/2 inch, 265 mm

Bosch Ratchet 1600A03AC8, 1/2 inch

The Bosch 1600A03AC8 is a hand ratchet with a 1/2 inch square drive, 265 mm long and 41 mm across the head. The mechanism has 72 teeth and a 5 degree working angle, and the torque stated by the manufacturer is 768 Nm. The tool belongs to the Bosch Professional hand tool range.

Powder-metallurgy ring gear

The ring gear of the mechanism is made by powder metallurgy - steel sintered from powder, which gives a more even structure in the small teeth. The gear has 72 teeth, which means a 5 degree working angle: that is all the swing needed for the next tooth to engage. In a tight space, where the hand can only turn a few degrees, that is the difference between a tool that works and a tool that only clicks.

Chrome-vanadium steel and ergonomics

The body is chrome-vanadium steel - the same material Bosch uses for the screwdrivers and chisels in this range. The neck is curved and the handle is soft-gripped, so the force from the hand is transferred along the axis of rotation instead of being lost in slipping. The manufacturer states power transfer up to 50% above the requirement of the ISO 3315 standard. The direction switch is under the thumb and can be changed without taking the hand off the tool, and the socket lock button keeps the socket on the square when you are working upwards or overhead.

What this size is for

The 1/2 inch square is the size for heavy fasteners - anchors, structural bolts, running gear. The 265 mm length gives the leverage needed to break a tight bolt loose without reaching for a cheater bar.

Applications

Fitting and removing threaded fasteners with 1/2 inch sockets, workshop servicing, installation work, structures and machinery, and anywhere the space does not allow a full turn of a wrench. The ratchet takes any standard socket or extension with a 1/2 inch drive, whoever made it.

Technical specifications

Questions and Answers