| Finish | BLACK OXIDE |
| Measurement system | Metric |
| Application | Heavy Industry, Mining, Water Treatment, Retail Industry, General Industry, Automotive Industry |
| Place of Origin | China |
| Model Number | 981 |
| Standard | DIN |
| Material | carbon steel, stainless steel |
| Product name | Round Nut |
| Type | lock nut |
| Size | M10-M100 |
| Color | Natural Colour |
| Packing | Cartons+plastic Bags |
| MOQ | 1000 |
Round nuts are mainly used for axial fixation of rolling bearings.
A round nut is a mechanical component that is often paired with a stop washer for round nuts. By inserting the inner tongue of the washer into the groove on the shaft and the outer tongue of the washer into the groove of the round nut, the nut is locked. In addition, a double nut anti loosening method can also be used. The thread specification range of round nuts is wide, ranging from M10 × 1 to M200 × 3, commonly used for axial fixation of rolling bearings to ensure the stability and safety of mechanical components. In amusement facilities, round nuts also have special applications, such as fixing shaft components. By installing double nuts or round nuts with stop washers to prevent loosening, it effectively prevents loosening problems caused by impact and vibration, ensuring the safe operation of amusement facilities.
Thread specification D=M16 × 1.5, material is 45 steel, groove or fully heat-treated hardness HRC35-45, marking of surface oxidized round nuts: Nut GB/T 812-88 M16 × 1.5.
In addition, round nuts have multiple uses and characteristics. For example, it is often used in conjunction with rolling bearings, making it easy to use a hook wrench for assembly and disassembly. Due to its small outer diameter and thickness, the small round nut has a compact structure and is suitable for use in groups of two pieces. It can also be adjusted slightly in the axial direction. In areas prone to loosening due to vibration, variable loads, etc., round nuts are usually equipped with open-ended pins for anti loosening. These characteristics and uses make round nuts play an important role in various machinery and equipment.
Standard basis
Round nuts with thread specifications ranging from M10 × 1 to M200 × 3
| thread specification D×P | dk | d1 | m | n | t | C | C1 | ||
| max | min | max | min | ||||||
| M10×1 | 22 | 16 | 8 | 4.3 | 4 | 2.6 | 2 | 0.5 | 0.5 |
| M12×1.25 | 25 | 19 | 8 | 4.3 | 4 | 2.6 | 2 | 0.5 | 0.5 |
| M14×1.5 | 28 | 20 | 8 | 4.3 | 5 | 2.6 | 2 | 0.5 | 0.5 |
| M16×1.5 | 30 | 22 | 8 | 5.3 | 5 | 3.1 | 2.5 | 0.5 | 0.5 |
| M18×1.5 | 32 | 24 | 8 | 5.3 | 5 | 3.1 | 2.5 | 0.5 | 0.5 |
| M20×1.5 | 35 | 27 | 8 | 5.3 | 5 | 3.1 | 2.5 | 0.5 | 0.5 |
| M22×1.5 | 38 | 30 | 10 | 5.3 | 5 | 3.1 | 2.5 | 1 | 0.5 |
| M24×1.5 | 42 | 34 | 10 | 5.3 | 5 | 3.1 | 2.5 | 1 | 0.5 |
| M25×1.5 | 42 | 34 | 10 | 5.3 | 5 | 3.1 | 2.5 | 1 | 0.5 |
| M27×1.5 | 45 | 37 | 10 | 5.3 | 5 | 3.1 | 2.5 | 1 | 0.5 |
| M30×1.5 | 48 | 40 | 10 | 5.3 | 5 | 3.1 | 2.5 | 1 | 0.5 |
| M33×1.5 | 52 | 43 | 10 | 6.3 | 6 | 3.6 | 3 | 1 | 0.5 |
| M35×1.5 | 52 | 43 | 10 | 6.3 | 6 | 3.6 | 3 | 1 | 0.5 |
| M36×1.5 | 55 | 46 | 10 | 6.3 | 6 | 3.6 | 3 | 1 | 0.5 |
| M39×1.5 | 58 | 49 | 10 | 6.3 | 6 | 3.6 | 3 | 1.5 | 0.5 |
| M40×1.5 | 58 | 49 | 10 | 6.3 | 6 | 3.6 | 3 | 1.5 | 0.5 |
| M42×1.5 | 62 | 53 | 10 | 6.3 | 6 | 3.6 | 3 | 1.5 | 0.5 |
| M45×1.5 | 68 | 59 | 10 | 6.3 | 6 | 3.6 | 3 | 1.5 | 0.5 |
| M48×1.5 | 72 | 61 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 0.5 |
| M50×1.5 | 72 | 61 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 0.5 |
| M52×1.5 | 78 | 67 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 0.5 |
| M55×2 | 78 | 67 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 0.5 |
| M56×2 | 85 | 74 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 1 |
| M60×2 | 90 | 79 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 1 |
| M64×2 | 95 | 84 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 1 |
| M65×2 | 95 | 84 | 12 | 8.36 | 8 | 4.25 | 3.5 | 1.5 | 1 |
| M68×2 | 100 | 88 | 12 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M72×2 | 105 | 93 | 15 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M75×2 | 105 | 93 | 15 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M76×2 | 110 | 98 | 15 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M80×2 | 115 | 103 | 15 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M85×2 | 120 | 108 | 15 | 10.36 | 10 | 4.75 | 4 | 1.5 | 1 |
| M90×2 | 125 | 112 | 18 | 12.43 | 12 | 5.75 | 5 | 1.5 | 1 |
| M95×2 | 130 | 117 | 18 | 12.43 | 12 | 5.75 | 5 | 1.5 | 1 |
| M100×2 | 135 | 122 | 18 | 12.43 | 12 | 5.75 | 5 | 1.5 | 1 |
| M105×2 | 140 | 127 | 18 | 12.43 | 12 | 5.75 | 5 | 1.5 | 1 |
| M110×2 | 150 | 135 | 18 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M115×2 | 155 | 140 | 22 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M120×2 | 160 | 145 | 22 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M125×2 | 165 | 150 | 22 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M130×2 | 170 | 155 | 22 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M140×2 | 180 | 165 | 26 | 14.43 | 14 | 6.75 | 6 | 1.5 | 1 |
| M150×2 | 200 | 180 | 26 | 16.43 | 16 | 7.9 | 7 | 1.5 | 1 |
| M160×3 | 210 | 190 | 26 | 16.43 | 16 | 7.9 | 7 | 2 | 1.5 |
| M170×3 | 220 | 200 | 26 | 16.43 | 16 | 7.9 | 7 | 2 | 1.5 |
| M180×3 | 230 | 210 | 30 | 16.43 | 16 | 7.9 | 7 | 2 | 1.5 |
| M190×3 | 240 | 220 | 30 | 16.43 | 16 | 7.9 | 7 | 2 | 1.5 |
| M200×3 | 250 | 230 | 30 | 16.43 | 16 | 7.9 | 7 | 2 | 1.5 |
There are 4 slots for M100 and below, and 6 slots for M105 and above.
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