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Flat washers
Introduction to flat light gasket: Basic concept: Flat washer, also known as flat washer, is a common mechanical component, usually made of metal or non-metal materials, and shaped as a flat ring with a hole in the middle. Function and Function Disperse pressure: Increase the contact area be...
Description
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Introduction to flat light gasket:
Basic concept: Flat washer, also known as flat washer, is a common mechanical component, usually made of metal or non-metal materials, and shaped as a flat ring with a hole in the middle.
Function and Function
Disperse pressure: Increase the contact area between the screw and the connected part to evenly distribute pressure and prevent excessive local pressure from damaging the surface of the connected part.
Protect the surface: Avoid direct contact and scratching of the surface of the connected part by the nut or bolt head during the tightening process.
Auxiliary sealing: In some cases, it can fill small gaps in the connection area, enhance sealing, and prevent leakage of liquids, gases, etc.
Adjustment gap: used to adjust the gap between components to ensure assembly accuracy and normal operation of the components.
Material classification
Metal materials: such as steel, alloy steel, stainless steel, copper and copper alloys, aluminum and aluminum alloys, etc. Steel and alloy steel flat washers have high strength and are suitable for applications that can withstand large loads; Stainless steel gaskets have good corrosion resistance and can be used in harsh environments; Copper and copper alloy gaskets have good conductivity and thermal conductivity, and are commonly used in electrical equipment and other fields.
Non metallic materials: Common ones include rubber, nylon, polytetrafluoroethylene, etc. Rubber flat gasket has good elasticity and sealing performance, suitable for low-pressure and room temperature sealing occasions; Nylon gaskets have characteristics such as insulation and wear resistance; Polytetrafluoroethylene gaskets have excellent corrosion resistance and low friction coefficient, and can be used in corrosive media such as strong acids and alkalis.
Specification and size: The specification and size of flat gaskets are usually represented by inner diameter, outer diameter, and thickness. Its size specifications are diverse and can be selected according to different application needs. The national standard specifies multiple series of flat gasket specifications, including GB95, GB96, GB97, etc., covering various combinations of inner diameter, outer diameter, and thickness.
Application areas: Widely used in many fields such as mechanical manufacturing, automotive industry, aerospace, electronic appliances, construction, etc. In mechanical assembly, used to fix various components; Plays a role in sealing, fastening, and adjusting clearances in automotive engines, chassis, and other parts; In the aerospace field, ensuring the stable connection and reliable sealing of key components of aircraft; In electronic and electrical products, it is used for fixing and insulating circuit boards.
| Mon | φ1.6 | φ2 | φ2.5 | φ3 | φ4 | φ5 | φ6 | φ8 | φ10 | φ12 | φ14 |
| d max | 1.84 | 2.34 | 2.84 | 3.38 | 4.48 | 5.48 | 6.62 | 862 | 10.77 | 13.27 | 15.27 |
| d min | 1.7 | 2.2 | 2.7 | 3.2 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | 13 | 15 |
| dc max | 4 | 5 | 6 | 7 | 9 | 10 | 12 | 16 | 20 | 24 | 28 |
| dc min | 3.7 | 4.7 | 5.7 | 6.64 | 8.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 27.48 |
| h max | 0.35 | 0.35 | 0.55 | 0.55 | 0.9 | 1.1 | 1.8 | 1.8 | 2.2 | 2.7 | 2.7 |
| h min | 0.25 | 0.25 | 0.45 | 0.45 | 0.7 | 0.9 | 1.4 | 1.4 | 1.8 | 2.3 | 2.3 |
| Mon | φ16 | φ18 | φ20 | φ22 | Φ24 | φ27 | φ30 | φ33 | φ36 | φ39 | Φ42 | φ45 | φ48 | φ52 | φ56 | φ60 | φ64 |
| d max | 17.27 | 19.33 | 21.33 | 23.33 | 25.33 | 28.33 | 31.39 | 34.62 | 37.62 | 42.62 | 45.62 | 48.62 | 52.74 | 56.74 | 62.74 | 66.74 | 70.74 |
| d min | 17 | 19 | 21 | 23 | 25 | 28 | 31 | 34 | 37 | 42 | 45 | 48 | 52 | 56 | 62 | 66 | 70 |
| dc max | 30 | 34 | 37 | 39 | 44 | 50 | 56 | 60 | 66 | 72 | 78 | 85 | 92 | 98 | 105 | 110 | 115 |
| dc min | 29.48 | 33.38 | 36.38 | 38.38 | 43.38 | 49.38 | 55.26 | 58.8 | 64.8 | 70.8 | 76.8 | 83.6 | 90.6 | 96.6 | 103.6 | 108.6 | 113.6 |
| h max | 3.3 | 3.3 | 3.3 | 3.3 | 4.3 | 4.3 | 4.3 | 5.6 | 5.6 | 6.6 | 9 | 9 | 9 | 9 | 11 | 11 | 11 |
| h min | 2.7 | 2.7 | 2.7 | 2.7 | 3.7 | 3.7 | 3.7 | 4.4 | 4.4 | 5.4 | 7 | 7 | 7 | 7 | 9 | 9 | 9 |
| Mon | φ3 | φ3.5 | φ4 | φ5 | φ6 | φ8 | φ10 | φ12 | φ14 | φ16 | φ18 | φ20 | φ22 | φ24 | φ27 | φ30 | φ33 | φ36 |
| d min | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 30 | 33 | 36 | 39 |
| d max | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | 8.62 | 10.77 | 13.27 | 15.27 | 17.27 | 19.33 | 21.33 | 23.52 | 25.52 | 30.52 | 33.62 | 36.62 | 39.62 |
| dc max | 9 | 11 | 12 | 15 | 18 | 24 | 30 | 37 | 44 | 50 | 56 | 60 | 66 | 72 | 85 | 92 | 105 | 110 |
| dc min | 864 | 10.57 | 11.57 | 14.57 | 17.57 | 23.48 | 29.48 | 36.38 | 43.38 | 49.38 | 55.26 | 59.26 | 64.8 | 70.8 | 83.6 | 90.6 | 103.6 | 108.6 |
| h max | 0.9 | 0.9 | 1.1 | 1.1 | 1.8 | 2.2 | 2.7 | 3.3 | 3.3 | 3.3 | 4.3 | 4.3 | 5.6 | 5.6 | 6.6 | 6.6 | 6.6 | 9 |
| h min | 0.7 | 0.7 | 0.9 | 0.9 | 1.4 | 1.8 | 2.3 | 2.7 | 2.7 | 2.7 | 3.7 | 3.7 | 4.4 | 4.4 | 5.4 | 5.4 | 5.4 | 7 |
| Mon | φ2.5 | φ3 | φ3.5 | φ4 | φ5 | φ6 | φ7 | φ8 | φ10 | φ12 | φ14 | φ16 | φ18 | φ20 | φ24 | φ30 | φ36 |
| d min | 2.7 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 7.4 | 8.4 | 10.5 | 13 | 15 | 17 | 20 | 22 | 26 | 33 | 39 |
| d max | 2.84 | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | 7.62 | 8.62 | 10.77 | 13.27 | 15.27 | 17.27 | 20.52 | 22.52 | 26.84 | 34 | 40 |
| dc max | 8 | 9 | 11 | 12 | 15 | 18 | 22 | 24 | 30 | 37 | 44 | 50 | 56 | 60 | 72 | 92 | 110 |
| dc min | 7.64 | 8.64 | 10.57 | 11.57 | 14.57 | 17.57 | 21.48 | 23.48 | 29.48 | 36.38 | 43.38 | 49.38 | 54.1 | 58.1 | 70.1 | 89.8 | 107.8 |
| h max | 0.9 | 0.9 | 0.9 | 1.1 | 1.4 | 1.8 | 2.2 | 2.2 | 2.7 | 3.3 | 3.3 | 3.3 | 4.6 | 4.6 | 6 | 7 | 9.2 |
| h min | 0.7 | 0.7 | 0.7 | 0.9 | 1 | 1.4 | 1.8 | 1.8 | 2.3 | 2.7 | 2.7 | 2.7 | 3.4 | 3.4 | 4 | 5 | 6.8 |
| Mon | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | ||
| d max | 0.5623 | 0.7193 | 0.8443 | 0.9693 | 1.1563 | 1.2813 | 1.4063 | 1.5313 | 1.6563 | ||
| d min | 0.531 | 0.688 | 0.813 | 0.938 | 1.125 | 1.25 | 1.375 | 1.5 | 1.625 | ||
| dc max | 1.0943 | 1.3443 | 1.5003 | 1.7813 | 2.0313 | 2.2813 | 2.5313 | 2.7813 | 3.0313 | ||
| dc min | 1.0317 | 1.2817 | 1.4377 | 1.7187 | 1.9687 | 2.2187 | 2.4687 | 2.7187 | 2.9687 | ||
| h max | 0.177 | 0.177 | 0.177 | 0.177 | 0.177 | 0.177 | 0.177 | 0.177 | 0.177 | ||
| h min | 0.097 | 0.122 | 0.122 | 0.136 | 0.136 | 0.136 | 0.136 | 0.136 | 0.136 | ||
| Mon | φ1.6 | φ2 | φ2.5 | φ3 | φ3.5 | φ4 | φ5 | φ6 | φ8 | φ10 | φ12 |
| d min | 1.7 | 2.2 | 2.7 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | 13 |
| d max | 1.84 | 2.34 | 2.84 | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | 8.62 | 10.77 | 13.27 |
| dc max | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 16 | 20 | 24 |
| dc min | 3.7 | 4.7 | 5.7 | 664 | 7.64 | 864 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 |
| h max | 0.35 | 0.35 | 0.55 | 0.55 | 0.55 | 0.9 | 1.1 | 1.8 | 1.8 | 2.2 | 2.7 |
| h min | 0.25 | 0.25 | 0.45 | 0.45 | 0.45 | 0.7 | 0.9 | 1.4 | 1.4 | 1.8 | 2.3 |
| Mon | φ14 | φ16 | φ18 | φ20 | φ22 | φ24 | φ27 | φ30 | φ33 | φ36 | φ39 | φ42 | φ45 | φ48 | φ52 | φ56 | φ60 | φ64 |
| d min | 15 | 17 | 19 | 21 | 23 | 25 | 28 | 31 | 34 | 37 | 42 | 45 | 48 | 52 | 56 | 62 | 66 | 70 |
| d max | 15.27 | 17.27 | 19.33 | 21.33 | 23.33 | 25.33 | 28.33 | 31.39 | 34.62 | 37.62 | 42.62 | 45.62 | 48.62 | 52.74 | 56.74 | 62.74 | 66.74 | 70.74 |
| dc max | 28 | 30 | 34 | 37 | 39 | 44 | 50 | 56 | 60 | 66 | 72 | 78 | 85 | 92 | 98 | 105 | 110 | 115 |
| dc min | 27.48 | 29.48 | 33.38 | 36.38 | 38.38 | 43.38 | 49.38 | 55.26 | 58.8 | 64.8 | 70.8 | 76.8 | 83.6 | 90.6 | 96.6 | 103.6 | 108.6 | 113.6 |
| h max | 2.7 | 3.3 | 3.3 | 3.3 | 3.3 | 4.3 | 4.3 | 4.3 | 5.6 | 5.6 | 6.6 | 9 | 9 | 9 | 9 | 11 | 11 | 11 |
| h min | 2.3 | 2.7 | 2.7 | 2.7 | 2.7 | 3.7 | 3.7 | 3.7 | 4.4 | 4.4 | 5.4 | 7 | 7 | 7 | 7 | 9 | 9 | 9 |
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