A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects – usually rotary fasteners, such as nuts and bolts—or keep them from turning. The most common shapes are called open-ended spanner and ring spanner. Higher quality wrenches are typically made from chromium-vanadium alloy tool steels and are often drop-forged. They are frequently chrome-plated to resist corrosion and for ease of cleaning.
Description:
- GEDORE vanadium steel 31CrV3, heads finely polished, chrome-plated
- With same size each end, ring 10° offset from shaft
Technical Parameters:
| Head 1 nut size | 9 mm | Total length | 138 mm | |
| Offset ring | 12.5 mm | Weight | 0.035 kg |
Wrenches and applications using wrenches or devices that needed wrenches, such as pipe clamps and suits of armor, have been noted by historians as far back as the 15th century. Adjustable coach wrenches for the odd-sized nuts of wagon wheels were manufactured in England and exported to North America in the late eighteenth and early nineteenth centuries.
technical change and errors excepted
Manufacturer Code:
6000750
Standard 2:
ISO 3318:2016 Assembly tools for screws and nuts — Open-ended wrenches, box wrenches and combination wrenches — Maximum widths of heads
Standard 3:
ISO 7738:2015 Assembly tools for screws and nuts — Combination wrenches — Lengths of wrenches and maximum thickness of heads
