The inspection certificate for Thread Bearing Slotted Lock Nuts lets you know the product meets specific international or national standards—like ISO 9140 (it’s for aerospace test methods) or the Chinese national standard GB/T 817-1988. These documents prove the nuts have passed strict tests on key things, such as what materials they’re made of, their mechanical properties, and how accurate their dimensions are. The certificate usually mentions the main procurement specification (like BS A 342) and the product standard that applies. This way, it confirms the nuts meet all the stated features and quality assurance rules.
Thread Bearing Slotted Lock Nuts are mainly made to create a secure, vibration-resistant fastening that you can reuse—they’re meant for critical applications. Here’s how they work: they have slots (usually two) that are made with precision. When you install the nut, these slots deform and grip the thread flanks of a screw. This creates a reliable locking torque that can hold up against vibrations. That’s why they’re a must-have in industries where safety and reliability matter most, like aerospace (they’re used for putting together pulleys and airframe bearings), railways, mining, nuclear energy, and petrochemicals. They’re also used in regular civilian machinery and car parts too. The design lets you take them out and put them back in at least five times without their performance dropping off much.
Q:What is your standard packaging for Thread Bearing Slotted Lock Nuts?
A: We pack our Nuts in tough carton boxes so they don’t get damaged while being shipped. Normally, each box has 100 or 500 nuts, but we can change the number of nuts per box to match your specific order and how you need to handle them.
| unit:mm | |||||||||||||||
| d*P | dk | m | n | t | Quality per 1000 steel products≈kz | d*P | dk | m | n | t | Quality per 1000 steel products≈kg | ||||
| max | min | max | min | max | min | max | min | ||||||||
| M10*1 | 22 | 8 | 4.3 | 4 | 2.6 | 2 | 16.82 | M64*2 | 95 | 12 | 8.36 | 8 | 4.25 | 3.5 | 351.9 |
| M12*1.25 | 25 | 21.58 | M65*2 | 95 | 342.4 | ||||||||||
| M14*1.5 | 28 | 26.82 | M68*2 | 100 | 10.36 | 10 | 4.75 | 4 | 380.2 | ||||||
| M16*1.5 | 30 | 5.3 | 5 | 3.1 | 2.5 | 28.44 | M72*2 | 105 | 15 | 518 | |||||
| M18*1.5 | 32 | 31.19 | M75*2 | 105 | 477.5 | ||||||||||
| M20*1.5 | 35 | 37.31 | M76*2 | 110 | 562.4 | ||||||||||
| M22*1.5 | 38 | 10 | 54.91 | M80*2 | 115 | 608.4 | |||||||||
| M24*1.5 | 42 | 68.88 | M85*2 | 120 | 640.6 | ||||||||||
| M25*1.5 | 42 | 68.88 | M90*2 | 125 | 18 | 12.43 | 12 | 5.75 | 5 | 796.1 | |||||
| M27*1.5 | 45 | 75.49 | M95*2 | 130 | 834.7 | ||||||||||
| M30*1.5 | 48 | 82.11 | M100*2 | 135 | 873.3 | ||||||||||
| M33*1.5 | 52 | 6.3 | 6 | 3.6 | 3 | 93.32 | M105*2 | 140 | 895 | ||||||
| M35*1.5 | 52 | 84.99 | M110*2 | 150 | 14.43 | 14 | 6.75 | 6 | 1076 | ||||||
| M36*1.5 | 55 | 100.3 | M115*2 | 155 | 22 | 1369 | |||||||||
| M39*1.5 | 58 | 107.3 | M120*2 | 160 | 1423 | ||||||||||
| M40*1.5 | 58 | 109.5 | M125*2 | 165 | 1477 | ||||||||||
| M42*1.5 | 62 | 121.8 | M130*2 | 170 | 1531 | ||||||||||
| M45*1.5 | 68 | 153.6 | M140*2 | 180 | 26 | 1937 | |||||||||
| M48*1.5 | 72 | 12 | 8.36 | 8 | 4.25 | 3.5 | 201.2 | M150*2 | 200 | 16.43 | 16 | 7.9 | 7 | 2651 | |
| M50*1.5 | 72 | 186.8 | M160*3 | 210 | 2810 | ||||||||||
| M52*1.5 | 78 | 238 | M170*3 | 220 | 2970 | ||||||||||
| M55*2 | 78 | 214.4 | M180*3 | 230 | 30 | 3610 | |||||||||
| M56*2 | 85 | 290.1 | M190*3 | 240 | 3794 | ||||||||||
| M60*2 | 90 | 320.3 | M200*3 | 250 | 3978 | ||||||||||