USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 1
it does not slip or mar the nut. Flare nut wrenches are of 12 point design
and have either a single or double end. Openings range in size from 3/4 to
1 5/8 inches.
(2) Adjustable Wrenches.
(a) Single Open-End Wrench. The single open-end adjustable wrench
(figure 21) is similar in shape to the fixed-end nonadjustable open-end
wrench, but has one adjustable jaw and one stationary jaw. The adjustable
end wrenches issued by the Army Ordnance Supply System have 1 3/8 to 2 7/8
inch jaw openings and are 24 inches long. A knurled nut is rotated to bring
the movable jaw up to fit the nut or bolt head.
(b) Auto and Monkey Wrenches.
The auto and monkey wrenches
(figure 21) are similar in design. They are of sturdy construction and are
made to fit a wide range of nuts and bolts. They are designed principally
for turning odd sized nuts or bolts which the open-end, box or socket
wrenches will not fit, and when work requires a sturdy wrench.
supplied in several sizes, from 5 to 21 inches long.