What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
Related Specifications of Automobile Welding Nuts (Square Nuts) Serial Number Standard Number Name (English) Name (Chinese) Remarks 1 MS440014 NUT,WELD Welding Square Nut M8 2 MS440013 NUT,WELD (6) Welding Square Nut M6 3 MF445605 NUT,WELD (10 ) welding square nut M10 4 MU442002 NUT,WELD welding square nut M6 parking brake handle 5 MB077464 NUT,WELD welding square nut for seat belt welding square nut 6 MB040348 BOLT WELD (10X22) welding bolt M10×22, bearing surface 7 MF198353 BOLT,WELD (6X14) Weld bolt M6×14, end face 8 MR236366 NUT (12) Nut M12 Suspended trailing arm mount 9 MS440015 NUT,WELD (10) Weld square nut M10 10 PW832525 BOLD WELD 7/16 UNF Weld bolt 7/16 For seat belt, bearing surface 11 MB528563 STUD,WELD Welding stud M6×20 12 MS440066 NUT,WELD (5/16=18UNC) Welding square nut 5/16 Child safety system 13 MS440018 NUT, WELD (6) Welding square nut M6 14 MF198375 BOLT,WELD (8X30) Welding stud M8×30 15 MF198038 BOLT, WELD (6X25) Welding bolt M6×25, bearing surface 16 MR236467 NUT (12) Welding square nut M12, for engine mount 17 MF140024 BOLT, FLANGE (8X18) Hexagon flange bolt without 3D 19 MF198036 BOLT,WELD (6X20) Weld stud M6×20 20 MF198034 BOLT,WELD (6X16) Weld bolt M6×16, bearing face 21 MS440012 NUT,WELD (5) Weld Square Nut M5 22 MB343340 BOLT,WELD (8X26) Welding Bolt M8×26, Bearing Surface 23 MB138471 STUD,WELD Welding Stud M8×46, Bearing Surface 24 MS190066 BOLT,WELD (8X16) Welding Bolt M8×16, Bearing Surface, NO 3D 25 MS240145 BOLT,WASHER ASSEMBLED (8X20) BOLT AND WASHER ASSEMBLY NO 3D 26 MB281149 NUT,WELD(6) WELD BOLTS M8, NO THREADS REQUIRED FOR BEARING 27 MF445603 NUT,WELD (6) Welded square nut M6 Reinforcing plate for rear door lock 28 MS190068 BOLT,WELD (8X20) Welded bolt M8×20, bearing surface 29 MU431507 NUT,WELD Welded square nut M8 for door hinge installation 30 MS240121 BOLT,WASHER ASSEMBLED (6X16) Bolt and washer assembly M8 for fuel filler cap 31 MS100221 BOLT,FLANGE (6X12) Flange face bolt M6 for fender mounting 32 MB344675 STUD,WELD Weld stud M6×10
The assembly of hollow rivets and flat head screws riveted on the cover plate is assembled in the product. Compared with the method of connecting with bolts, the loading and unloading speed can improve the efficiency by about 80% to 90%, and is widely used. The assembly needs to riveted hollow rivets and flat head screws on the cover plate, and ensure that the riveted flat head screws can rotate flexibly. When riveting, it is necessary to use special tools to riveted the hollow rivets, flat head screws and cover plates together for riveting. In the existing riveting process, the oval head screw is often damaged due to the action of external force. The positioning process is cumbersome and the work efficiency is low.
The utility model proposes an installation structure which adopts a T-shaped bolt to cooperate with a channel, which includes a bolt head, an installation channel, a nut and a washer. The upper end of the screw rod is provided with a screw head, the two side walls of the bolt head are respectively provided with an arc surface, the two ends of the bolt head are provided with protrusions, and the interior of the installation channel is provided with an inner cavity, There is an opening above the installation channel, the bolt head is installed in the inner cavity, the nut is installed on the screw, the nut is located above the installation channel, and the gasket is installed on the installation channel and the nut between.
Ordinary snap-type retaining rings have ears on their structure, which cause interference with the inner parts. If the ears are not provided, it is very troublesome to disassemble. For the very demanding aerospace field, ordinary snap rings cannot meet their requirements.
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