The tire cross ratchet wrench blank has no cracks, inte […]
The tire cross ratchet wrench blank has no cracks, interlayers and incomplete shapes. There is no serious cutting or over-material phenomenon at the transition part between the blank head and the handle. The difference between the thickness of the two ends of the blank and the thickness of the two edges of the same head is less than 12x14, and the size is less than 0.2, and the size above 12x14 is less than 0.3. The rough handle of the cross wrench is straight and the writing is clear. There is no serious oxidation on the surface of the ratchet wrench blank. The cross has no cutting ribs, squeezing and obvious cutting marks caused by cutting edges. The error modulus of the blank is below, the specification is below 0.3, and the specification above 12x14 is below 0.5. The thickness of the blank head meets the requirements of relevant regulations. The residual burr of the blank is not more than 0.8.
The quality inspection standards for secondary products are as follows. The blank has cutting ribs and squeezing caused by slight trimming, but there is no obvious cut mark. Other ratchet wrenches meet the specified requirements. The surface of the ratchet wrench blank is slightly oxidized. The error modulus of the blank is below 12x14, and the specification is between 0.3 and 0.5. The specifications above 12x14 are between 0.5 and 0.8. The difference between the thickness of the two ends of the blank and the thickness of the two edges of the same head is less than 12x14, and the specification is between 0.2 and 0.4. The specifications above 12x14 should be between 0.3 and 0.5.Sensitive wrench, also called adjustable wrench, is a tool for tightening or loosening angular screws or nuts. There are three types commonly used by electricians: 200, 250, and 300mm, which should be selected according to the size of the nut.
When using, hold the handle with your right hand. The farther back the hand is, the more effortless it is to pull. When pulling the small nut, because it is necessary to inexhaustibly flick the worm gear to adjust the size of the wrench, the hand should be held close to the lip of the slack, and the worm gear should be adjusted with the thumb to conform to the size of the nut.The wrench is a special tool for tightening or loosening screws. There are three series of standard type, positive and negative threaded type, and reducing type. There are fifty-two varieties, which can meet the horizontal, vertical and oblique directions in the building structure. The requirements of connecting steel bars with the same diameter, different diameter, and adjustable length and direction of the parts require a socket wrench for many car owners and friends when disassembling and installing car tires or spark plugs.When the wrench of the sensitive wrench clamps the nut, the lip is on the upper side, and the lip of the flexible wrench is mine. Adjustable wrenches cannot be used in reverse.
When pulling a rusty nut, you can drop a few drops of kerosene or engine oil on the nut, so that it will be easy to twist. Hardware tool wrench manufacturers cannot use steel pipe sleeves on the handle of the sensitive wrench to add torque when they cannot be screwed, because it is very easy to damage the sensitive flip lip. Do not use the sensitive wrench as a hammer. Tunzi electricians also often use open-tooth wrenches also called dead wrenches. It has two types of single-head and double-head. The opening teeth are compatible with the size of the screw head and the nut, and a set is made according to the standard size.When using a socket wrench, be sure to choose a socket that fits the nut or bolt completely. If a socket larger than the nut or bolt is used, it is easy to round the head of the nut or bolt during the rotation. When disassembling the relatively tight wheel bolts, if you put a suitable extension rod on the sleeve handle, it can increase the rotating torque and it is easier to loosen the wheel bolts.