What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
Head type broadcast 1. Hexagon head (hexagon head) 2. Hexagon head with flange (hexagon head with flange) 3. Square head (square head) 4. T head T head (hammer head) 5. Mushroom head (truss head) 6. Cheese head 7. Round head 8. Pan head 9. Countersunk head (flat head) 10. Raised countersunk head (oval
The existing way to achieve radial locking of the shaft is generally to sleeve the positioning block on the shaft, and then use a cylindrical pin to pass through the positioning block to lock the shaft. The locking structure and method are as follows: A locking groove with an arc-shaped cross-section is set on the outer side of the shaft along the direction perpendicular to the axis of the shaft, an opening is set on the positioning block, and then a cylindrical pin is used to pass through the positioning block from the outside of the positioning block and screw the lock at one end of the cylindrical pin. When the lock nut is tightened, the opening on the positioning block will be deformed inwardly and locked on the shaft.
The traditional dismantling of automobile girder rivets is mostly carried out manually, which has many defects such as long disassembly time, low disassembly efficiency, labor-intensive, time-consuming, labor-intensive, low operation safety, difficult protection, and easy injury.
2. Wall panel nails 1. Hardness of the heart: Standard: HRC24-45. 2. Surface hardness: Standard: HV600-800. 3. Carburized layer: 4#-6# 0.05-0.18mm, 8#-12#0.10-0.23, 14# 0.13-0.28. 4. Bending degree: the requirement is 150-450 5. Salt spray test: generally MIN 48h. 6. Torque: Specification 6#7#8#10# Torque 21283558. 3. Drilling screw 1. Hardness of the heart: Standard: HRC32-40 The actual measurement of the company's products is HRC31.7-39.0. 2. Surface hardness: Standard: HV600-700 The actual measurement of the company's products is about HV620. 3. Hard penetration layer: 4#-6#: 0.05-0.18mm 8#-12#: 0.10-0.23mm 14#: 0.15-0.28mm 4. Torque: specification, drill tail, screw, TYPE BSDTYPE CSDINCH-LBKG- CMINCH-LBKG-CM4# (2.9) 141614166# (3.5) 242824288# (4.2) 4248485510# (4.8) 6170657512# (5.5) 9210610011514# (6.3) 150173156180.
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