Washer Sizes and Types

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Washer Sizes and Types

Table Of Content

 

High Quality Washers in Form of A,B,C,D Available in Range of Sizes

Washer Outside Diameter and Thickness for Forms A, B, C, and D

SIZE Washer Dimensions Chart
FORM A FORM B FORM C FORM D
THICKNESS OD THICKNESS OD THICKNESS OD THICKNESS OD
M2 0.3 5.0 – – – – – –
M3 0.5 7.0 – – – – – –
M4 0.8 9.0 – – 0.8 10.0 – –
M5 1.0 10.0 0.8 12.5 1.0 12.5 – –
M8 1.6 17 1.0 17 1.6 21 1.0 21
M10 2.0 21 1.25 21 2.0 24 1.25 24
M12 2.5 24 1.6 24 2.5 28 1.6 28
M16 3.0 30 2.0 30 3.0 34 2.0 34
M18 3.0 34 2.0 34 3.0 37 2.0 37
M22 3.0 39 2.0 39 – – – –
M24 4.0 44 2.5 44 4.0 50 2.5 50
M27 4.0 50 2.5 50 – – – –
M33 5.0 60 3.0 60 – – – –
M36 5.0 66 3.0 66 – – – –

Refer Flat Washer Sizes in mm

Metric Flat Washer Sizes

Metric Flat Washer Sizes

Flat washer dimensions
Size OD ID Thickness Size OD ID Thickness
M3 8MM 3.6MM 0.8MM M14 30MM 14.5MM 1.5MM 2.0MM 3.0MM
M4 10MM 4.3MM 1.0MM M16 32MM 16.5MM 2.0MM 3.0MM
M5 12MM 5.4MM 1.0MM M20 40MM 20.5MM 2.0MM 3.0MM
M6 13MM 6.5MM 1.0MM M22 44MM 23.5MM 2.0MM 3.0MM
M6 17MM 6.5MM 1.5MM 2.0MM M24 48MM 26MM 2.0MM 3.0MM
M8 18MM 8.2MM 1.0MM 1.2MM 2.0MM 2.5MM M27 50MM 30.5MM 2.5MM
M10 22MM 10.5MM 1.2MM 1.5MM 2.0MM 3.0MM M27 55MM 30.5MM 3.0MM
M10 30MM 10.5MM 2.5MM 3.0MM M30 60MM 33.5MM 3.0MM
M10 50MM 11MM 3.0MM M33 66MM 36.5MM 3.0MM
M12 26MM 13MM 1.5MM 2.0MM 3.0MM M36 72MM 39.5MM 3.0MM

 

USS and SAE Washer With a Smaller Inside Diameter View Dimensions

USS and SAE Washer Dimensions

USS and SAE Washer Dimensions

Size USS SAE
OD
(B)		 ID
(A)		 Thickness
(C)		 OD
(B)		 ID
(A)		 Thickness
(C)
#2 – – – 1/4″ 3/32″ 0.020″
#4 – – – 5/16″ 1/8″ 0.032″
#8 – – – 7/16″ 3/16″ 0.049″
#10 – – – 1/2″ 7/32″ 0.049″
#12 – – – 9/16″ 1/4″ 0.065″
1/4″ 0.734″ 5/16″ 0.065″ 5/8″ 9/32″ 0.065″
5/16″ 7/8″ 3/8″ 0.083″ 11/16″ 11/32″ 0.065″
7/16″ 1-1/4″ 1/2″ 0.083″ 15/16″ 15/32″ 0.065″
9/16″ 1-15/32″ 5/8″ 0.109″ 1-5/32″ 19/32″ 0.095″
5/8″ 1-3/4″ 11/16″ 0.134″ 1-5/16″ 21/32″ 0.095″
7/8″ 2-1/4″ 15/16″ 0.165″ 1-3/4″ 15/16″ 0.134″
1″ 2-1/2″ 1-1/16″ 0.165″ 2″ 1-1/16″ 0.134″
1-1/8″ 2-3/4″ 1-1/4″ 0.165″ – – –
1-1/4″ 3″ 1-3/8″ 0.165″ – – –
1-1/2″ 3-1/2″ 1-5/8″ 0.180″ – – –
1-5/8″ 3-3/4″ 1-3/4″ 0.180″ – – –
2″ 4-1/2″ 2-1/8″ 0.213″ – – –

 

DIN 125 Form A Washers Dimension Chart

Size M1 M1.2 M1.4 M1.6 M2 M2.5 M3 M3.5 M4 M5
Inside Diameter (mm) 1.1 1.3 1.5 1.7 2.2 2.7 3.2 3.7 4.3 5.3
Outside Diameter (mm) 3.2 3.8 3.8 4.0 5.0 6.0 7.0 8.0 9.0 10
Thickness 0.3 0.3 0.3 0.3 0.3 0.5 0.5 0.5 0.8 1.0
Size M6 M7 M8 M10 M11 M12 M14 M16 M18 M20
Inside Diameter (mm) 6.4 7.4 8.4 10.5 12.0 13 15 17 19 21
Outside Diameter (mm) 12 14 16 20 24 24 28 30 34 37
Thickness 1.6 1.6 1.6 2.0 2.5 2.5 2.5 3.0 3.0 3.0
Size M22 M24 M27 M30 M33 M36 M39 M42 M45 M48
Inside Diameter (mm) 23 25 28 31 34 37 40 43 46 50
Outside Diameter (mm) 39 44 50 56 60 66 72 78 85 92
Thickness 3.0 4.0 4.0 4.0 5.0 5.0 6.0 7.0 7.0 8.0

 

Get Spring Washer provide a vibration resistant function and Washers also comes in different shapes

Metric Spring Washer Dimensions

Nominal Size M2 M2.5 M3 M3.5 M4 M5 M6 M8 M10
Rectangular ID 2.1 2.6 3.1 3.6 4.1 5.1 6.1 8.1 10.2
Outer 4.4 5.1 6.2 6.7 7.6 9.2 11.8 14.8 18.1
Square Thickness 0.5 0.6 0.8 0.8 0.9 1.2 1.6 2 2.2
Outer 5.5 6 6.95 8.55 9.6 12.75 15.9
Thickness 1 1 1.2 1.5 1.5 2 2.5
Nominal Size M12 M14 M16 M18 M20 M22 M24 M27 M30
Rectangular ID 12.2 14.2 16.2 18.2 20.2 22.5 24.5 27.5 30.5
Outer 21.1 24.1 27.4 29.4 33.6 35.9 40 43 48.2
Square Thickness 2.5 3 3.5 3.5 4 4 5 5 6
Outer 17.9 21.1 24.3 26.4 30.5 32.7 35.7 38.9 43.9
Thickness 2.5 3 3.5 3.5 4.5 4.5 5 5 6

 

Different Types Washers and Their Uses

Different Types Washers and Their Uses

Types of Washers Application & Uses
Plain Washers Provide a larger bearing surface
Torque Washer Used for drilling, extraction
Flat washer Used in numerous applications
Fender washer Used in automobile industries plumbing sheet
 Countersunk washer high-vibration applications
Shoulder washer used to insulate fasteners
C-washer mechanical and assembly applications
Spring Washers where high clamping force is required
Conical washer used to absorb vibration
Dome spring washer Used  load-cycling applications
Wave spring washer Used in lighter applications
Finger spring washer Used in static applications
Lock Washers Used for locking a device
External tooth lock washer  Electrical ground bonding
Internal tooth lock washer Outdoor and corrosive applications
Specialized Washers Automotive, Electrical
Top hat washers sealing and spacing applications
Keyed washers Gearboxes, machinery, automotive
Insulating shoulder washer used to insulate fasteners
Gaskets minimizing vibration, preventing leaks

 

Shapes of Washers

  • Spherical Shape
  • Square Shape
  • Shoulder Shape
  • Wave Shape
  • C-Shaped
Check Metric Washer Standards and Gage Thickness

Screws Weight Chart for DIN 933

DiameterLength M3 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24
120 1 2.1 3.37 5.11 7.85 11.1 19.2 27.7 44 58.3 82 105 133 173
110 1.09 2.25 3.62 5.45 8.35 11.7 20.2 29.1 46 60.9 84.9 110 137 178
100 1.18 2.41 3.87 5.8 8.85 12.3 21.2 31 48 63.5 87.2 114 143 184
95 1.27 2.56 4.12 6.15 9.35 12.9 22.2 33 50 66.2 92.2 119 148 190
90 1.4 2.8 4.49 6.65 10 13.9 23.7 34.1 53 70.2 95.8 124 155 199
85 1.52 3.04 4.86 7.15 10.7 14.9 25.2 36.2 55.9 74.2 100 129 161 200
80 1.61 3.19 5.11 7.51 11.3 15.5 26.2 37.7 57.9 76.9 104 134 168 214
75 3.57 5.73 8.37 12.5 17.1 28.7 41.3 62.9 83.5 112 145 181 229
70 3.96 6.35 9.23 13.8 18.7 31.2 44.9 67.9 90.2 120 155 193 244
65 4.34 6.99 10.1 15 20.3 33.7 48.5 72.9 97.1 128 165 206 259
60 4.73 7.59 11 16.3 21.8 36.2 52 77.9 103 136 176 219 274
55 5.12 8.21 11.9 17.5 23.4 38.7 55.6 82.8 110 145 186 232 289
50 5.5 8.83 12.7 18.7 25 41.3 58.2 87.8 117 153 196 244 304
45 5.89 9.45 13.6 20 26.6 43.8 62.8 92.8 123 161 207 257 319
40 6.28 10.1 14.4 21.2 28.2 46.3 66.4 97.9 130 169 217 269 334
35 10.7 15.3 22.5 29.8 48.8 70 102 137 177 227 282 348
30 11.3 16.2 23.7 31.4 51.3 73.6 107 144 186 238 295 363
28 25 33 53.8 77.2 112 150 194 247 308 378
25 26.2 34.6 56.3 80.8 117 157 202 258 321 393
22 27.5 35.2 59.8 84.4 122 164 210 268 333 408
20 28.7 37.7 61.3 88 127 170 218 279 346 423
18 40.9 66.4 95.2 137 184 235 300 371 453
16 71.4 102 147 197 251 320 397 483
14 76.4 109 157 210 268 340 421 513
12 81.4 116 167 224 284 361 448 543
10 86.4 123 177 237 300 381 473 572
8 316 402 498 602
7 332 422 523 632
6 348 442 548 662
5 364 462 573 692
4 380 484 598 722

 

Washers Standards

ASME B18.21.1 DIN 125A
DIN 6799 ASME B18.21.1

 

Plain Washers Gage Thickness

Gage Number 0 0 0 0 0 1 2 3 4 5 6 7
Gage Measurement (in inches) 0.5 0.454 0.425 0.38 0.34 0.3 0.284 0.259 0.238 0.22 0.203 0.18
Gage Number 11 12 13 14 15 16 17 18 19 20 21 22
Gage Measurement (in inches) 0.12 0.109 0.095 0.083 0.072 0.065 0.058 0.049 0.042 0.035 0.032 0.028
Gage Number 25 26 27 28 29 30 31 32 33 34 35 36
Gage Measurement (in inches) 0.02 0.018 0.016 0.014 0.013 0.012 0.01 0.009 0.008 0.007 0.005 0.004

 

How to Select the Right Washer ?

How to Select the Right Washer

 

Plain Washer Dimensions

Plain Washer Dimensions

Washer Size

 

 Series ID OD Basic Thickness
Basic Tolerance Basic Tolerance Max. Min.
….. Plus Minus Plus Minus
– – 0.078 0.000 0.005 0.188 0.000 0.005 0.020 0.025 0.016
– – 0.125 0.008 0.005 0.312 0.008 0.005 0.032 0.040 0.025
No. 6 0.138 0.156 0.008 0.005 0.375 0.015 0.005 0.049 0.065 0.036
No. 8 0.164 0.188 0.008 0.005 0.438 0.015 0.005 0.049 0.065 0.036
3/16 0.188 0.250 0.015 0.005 0.562 0.015 0.005 0.049 0.065 0.036
No. 12 0.216 0.250 0.015 0.005 0.562 0.015 0.005 0.065 0.080 0.051
1/4 0.250 N 0.281 0.015 0.005 0.625 0.015 0.005 0.065 0.080 0.051
1/4 0.250 W 0.312 0.015 0.005 0.734 b 0.015 0.007 0.065 0.080 0.051
5/16 0.312 W 0.375 0.015 0.005 0.875 0.030 0.007 0.083 0.104 0.064
3/8 0.375 N 0.406 0.015 0.005 0.812 0.015 0.007 0.065 0.080 0.051
3/8 0.375 W 0.438 0.015 0.005 1.000 0.030 0.007 0.083 0.104 0.064
7/16 0.438 W 0.500 0.015 0.005 1.250 0.030 0.007 0.083 0.104 0.064
1/2 0.500 N 0.531 0.015 0.005 1.062 0.030 0.007 0.095 0.121 0.074
1/2 0.500 W 0.562 0.015 0.005 1.375 0.030 0.007 0.109 0.132 0.086
9/16 0.562 W 0.625 0.015 0.005 1.469 b 0.030 0.007 0.109 0.132 0.086
5/8 0.625 N 0.656 0.030 0.007 1.312 0.030 0.007 0.095 0.121 0.074
5/8 0.625 W 0.688 0.030 0.007 1.750 0.030 0.007 0.134 0.160 0.108
3/4 0.750 W 0.812 0.030 0.007 2.000 0.030 0.007 0.148 0.177 0.122
7/8 0.875 N 0.938 0.030 0.007 1.750 0.030 0.007 0.134 0.160 0.108
1 1.000 N 1.062 0.030 0.007 2.000 0.030 0.007 0.134 0.160 0.108
1 1.000 W 1.062 0.030 0.007 2.500 0.030 0.007 0.165 0.192 0.136
1 1/8 1.125 N 1.250 0.030 0.007 2.250 0.030 0.007 0.134 0.160 0.108
1 1/4 1.250 N 1.375 0.030 0.007 2.500 0.030 0.007 0.165 0.192 0.136
1 3/8 1.375 W 1.500 0.045 0.010 3.250 0.045 0.010 0.180 0.213 0.153
1 1/2 1.500 N 1.625 0.030 0.007 3.000 0.030 0.007 0.165 0.192 0.136
1 3/4 1.750 1.875 0.045 0.010 4.000 0.045 0.010 0.180 0.213 0.153
1 7/8 1.875 2.000 0.045 0.010 4.250 0.045 0.010 0.180 0.213 0.153
2 2.000 2.125 0.045 0.010 4.500 0.045 0.010 0.180 0.213 0.153
2 1/2 2.500 2.625 0.045 0.010 5.000 0.045 0.010 0.238 0.280 0.210
2 3/4 2.750 2.875 0.065 0.010 5.250 0.065 0.010 0.259 0.310 0.228
3 3.000 3.125 0.065 0.010 5.500 0.065 0.010 0.284 0.327 0.249

 

Washer Weight Calculator

Washer Weight Calculator

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