Wrench with open and ring pharynxes.
- Nomenclature of keys: Sizes of a pharynx from 8х8 to 27х27 mm
- Are made of the alloyed constructional chromic steel 40X, GOST 4543-71.
- A way of production - hot volume stamping,
- zinc, white, thickness is 15 μR., hromatirovany;
- copper, 30-50 μR., hromatirovany, additional impregnation by a polymeric emulsion.
- Durability of keys corresponds to group of durability With for heads with an open pharynx and on group B - for heads in with a ring pharynx
in accordance with GOST 2838-80;
- Packing, marking, transportation and storage of keys in accordance with GOST 18088-83.
- Production is certified.
It is applied to service of the fixture with a "turnkey" size corresponding to the key pharynx size. For prevention of failure of a key in use, working surfaces of a pharynx have to be cleared of pollution.
The manufacturer guarantees compliance of keys to requirements of specifications at observance of conditions of transportation and operation.