Thread – Special
unified Thread – Special
V 60 ° “V” thread truncation crest and root. The “V” form of the theory is usually determined by the user’s specifications.
The British standard whit worth special line
Use style guide
These standard styles of faucet have standard or optional line slots. Manual faucet is suitable for general use, such as production tapping or manual tapping. Tapered, plug and bottom styles provide versatility in hard materials, blind holes and holes.
The screw point faucet has the same physical size as the standard manual faucet. However, the cutting surface of the spiral point faucet is in a predetermined Angle, relative to the shaft Angle of the head, to force the chip to evacuate before cutting.
A spiral groove is recommended when a gap is in the hole, such as a keyway or a cross hole. Can usually be in a slow spiral (18 to 30 ° spiral Angle) or fast spiral (45 to 52 ° spiral Angle). Here are some tips on how to screw up the various materials:
Spiral flute of 45 ° and higher – effective very ductile materials such as aluminum and copper. If used in other materials, they usually cause the chip to be nested because the spiral is too fast and the chip is too small to form properly.
The spiral flute 38 ° – 42 ° suggest long-term high carbon steel or free processing of stainless steel. They form a sufficiently tight chip that can be easily evacuated. On the larger faucet, it can ease the cutting.
Spiral flute 25 °, 35 ° – free recommended processing, low or leaded steel, bronze or brass free processing. The spiral grooves used in brass and hard bronze are usually not very good because small pieces don’t blow the spiral well.