Washer Dimensions

Dimensions for S.A.E. hardened flat washers, USS hardened flat washers, S.A.E. low carbon flat washers, USS low carbon flat washers, spring steel and hardened steel split lock washers, and hardened beveled washers.

Washer Dimensions

S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS

  Table W1
S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS
  
  

    Bolts Size
    A
O.D.
    B
I.D.
    C
Thickness
  

    Min
    Max
  

  1/4"
    5/8
    9/32
    0.051
    0.080
  

  5/16"
    11/16
    11/32
    0.051
    0.080
  

  3/8"
    13/16
      13/32
    0.051
    0.080
  

  7/16"
    59/64
    15/32
    0.051
    0.080
  

  1/2"
    1-1/16
    17.32
    0.097
    0.177
  

  5/8"
    1-5/16
    11/16
    0.122
    0.177
  

  3/4"
    1-15/32
    13/16
    0.122
    0.177
  

  7/8"
    1-3/4
    15/16
    0.136
    0.177
  

  1"
    2
    1-1/8
    0.136
    0.177
  

  1-1/8"
    2-1/4
    1-1/4
    0.136
    0.177
  

  1-1/4"
    2-1/2
    1-3/8
    0.136
    0.177
  

  1-3/8"
    2-3/4
    1-1/2
    0.136
    0.177
  

  1-1/2"
    3
    1-5/8
    0.136
    0.177
  

  1-3/4"
    3-3/8
    1-7/8
    0.178
    0.28
  

  2"
    3-3/4
    2-1/8
    0.178
    0.28
  

  2-1/4"
    4
    2-3/8
    0.24
    0.34
  

  2-1/2"
    4-1/2
    2-5/8
    0.24
    0.34
  

  2-3/4"
    5
    2-7/8
    0.24
    0.34
  

  3"
    5-1/2
    3-1/8
    0.24
    0.34
  

  3-1/4"
    6
    3-3/8
    0.24
    0.34
  

  3-1/2"
    6-1/2
    3-5/8
    0.24
    0.34
  

  3-3/4"
    7
    3-7/8
    0.24
    0.34
  

  4"
    7-1/2
    4-1/8
    0.24
    0.34
  

USS DIMENSIONS FOR HARDENED FLAT WASHERS

  Table W2
USS DIMENSIONS FOR HARDENED FLAT WASHERS
  
  

    Bolts Size
    A
O.D.
    B
I.D.
    C
Thickness
  

    Min
    Max
  

  1/4"
    3/4
    5/16
    0.051
    0.080
  

  5/16"
    7/8
    3/8
    0.064
    0.104
  

  3/8"
    1
      7/16
    0.064
    0.104
  

  7/16"
    1-1/4
    1/2
    0.064
    0.104
  

  1/2"
    1-3/8
    9/16
    0.086
    0.132
  

  9/16"
    1-1/2
    5/8
    0.086
    0.132
  

  5/8"
    1-3/4
    11/16
    0.108
    0.160
  

  3/4"
    2
    13/16
    0.122
    0.177
  

  7/8"
    2-1/4
    15/16
    0.136
    0.192
  

  1"
    2-1/2
    1-1/16
    0.136
    0.192
  

  1-1/8"
    2-3/4
    1-1/4
    0.136
    0.192
  

  1-1/4"
    3
    1-3/8
    0.136
    0.192
  

  1-3/8"
    3-1/4
    1-1/2
    0.153
    0.213
  

  1-1/2"
    3-1/2
    1-5/8
    0.153
    0.213
  

S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS

  Table W3
S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS
  
  

    Bolts Size
    A
O.D.
    B
I.D.
    C
Thickness
  

  1/8"
    3/8
    5/32
    3/64
  

  5/32"
    7/16
    3/16
    3/64
  

  3/16"
    1/2
    7/32
    3/64
  

  7/32"
    9/16
    1/4
    3/64
  

  1/4"
    5/8
    9/32
    1/16
      

  5/16"
    11/16
    11/32
    1/16
      

  3/8"
    13/16
      13/32
    1/16
      

  7/16"
    59/64
    15/32
    1/16
      

  1/2"
    1-1/16
    17/32
    3/32
      

  9/16"
    1-3/16
    19/32
    3/32
  

  5/8"
    1-5/16
    21/32
    3/32
     

  3/4"
    1-1/2
    13/16
    9/64
     

  7/8"
    1-3/4
    15/16
    9/64
      

  1"
    2
    1-1/16
    9/64
    

  1-1/8"
    2-1/4
    1-1/4
    9/64
      

  1-1/4"
    2-1/2
    1-3/8
    5/32
      

  1-3/8"
    2-3/4
    1-1/2
    5/32
     

  1-1/2"
    3
    1-5/8
    5/32
    

USS DIMENSIONS FOR LOW CARBON FLAT WASHERS

  Table W4
USS DIMENSIONS FOR LOW CARBON FLAT WASHERS
  
  

    Bolts Size
    A
O.D.
    B
I.D.
    C
Thickness
  

  3/16"
    9/16
    1/4
    3/64
  

  1/4"
    3/4
    5/16
    1/16
      

  5/16"
    7/8
    3/8
    5/64
      

  3/8"
    1
      7/16
    5/64
      

  7/16"
    1-1/4
    1/2
    5/64
      

  1/2"
    1-3/8
    9/16
    7/64
      

  9/16"
    1-1/2
    5/8
    7/64
  

  5/8"
    1-3/4
    11/16
    9/64
     

  3/4"
    2
    13/16
    5/32
     

  7/8"
    2-1/4
    15/16
    11/64
      

  1"
    2-1/2
    1-1/16
    11/64
    

  1-1/8"
    2-3/4
    1-1/4
    11/64
      

  1-1/4"
    3
    1-3/8
    11/64
      

  1-3/8"
    3-1/4
    1-1/2
    3/16
     

  1-1/2"
    3-1/2
    1-5/8
    3/16
    

  1-5/8"
    3-3/4
    1-3/4
    3/16
    

  1-3/4"
    4
    1-7/8
    3/16
    

  1-7/8"
    4-1/4
    2
    3/16
    

  2"
    4-1/2
    2-1/8
    3/16
    

  2-1/4"
    4-3/4
    2-3/8
    7/32
    

  2-1/2"
    5
    2-5/8
    15/64
    

  2-3/4"
    5-1/4
    2-7/8
    1/4
    

  3"
    5-1/2
    3-1/8
    17/64
    

SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS

  Table W5
SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS
  
  

    Bolts Size
    A
O.D.
    B
I.D.
    T
Mean Section Thickness
(ti + to)/2
 W
Section Width
    ti  -  to
Increase in Thickness
(O.D. to I.D.)
  

    Min
    Max
    Min
    Max
  

  #6
250
148
141
31
047
0030
0015
  

  #8
293
174
167
040
055
0036
0018
  

  #10
334
200
193
047
062
0040
0020
  

  1/4"
487
260
252
062
109
0070
0035
  

  5/16"
583
322
314
078
125
0080
0040
  

  3/8"
680
385
377
094
141
0090
0045
  

  7/16"
776
450
440
109
156
0100
0050
  

  1/2"
869
512
502
125
171
0110
0055
  

  9/16"
965
574
564
141
188
0120
0060
  

  5/8"
072
640
628
156
203
0130
0065
  

  3/4"
264
765
753
188
234
0150
0075
  

  7/8"
455
890
878
219
266
0170
0085
  

  1"
647
015
003
250
297
0190
0095
  

  1-1/8"
838
144
129
281
328
0210
0105
  

  1-1/4"
028
272
254
312
359
0230
0115
  

  1-3/8"
210
399
379
344
391
0250
0125
  

  1-1/2"
409
524
504
375
422
0270
0135
  

HARDENED BEVELED WASHER DIMENSIONS

  Table W5
HARDENED BEVELED WASHER DIMENSIONS
  
  

    Bolts Size
    A
MIN.
    B
I.D.
    C

Mean
Thickness
    Slope or Taper
in Thickness
  

  1/2"
    1.750
    0.531
    5.16
        1:6
      

  5/8"
    1.750
    0.688
    5.16
        1:6
     

  3/4"
    1.750
    0.812
    5.16
        1:6
     

  7/8"
    1.750
    0.937
    5.16
        1:6
      

  1"
    1.750
    1.125
    5.16
        1:6
    

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Table W5 SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS
Bolts Size	A O.D.	B I.D.		T Mean Section Thickness (ti + to)/2	W Section Width	ti - to Increase in Thickness (O.D. to I.D.)
Bolts Size	A O.D.	Min	Max	T Mean Section Thickness (ti + to)/2	W Section Width	Min	Max
#6	0.250	0.148	0.141	0.31	0.047	0.0030	0.0015
#8	0.293	0.174	0.167	0.040	0.055	0.0036	0.0018
#10	0.334	0.200	0.193	0.047	0.062	0.0040	0.0020
1/4"	0.487	0.260	0.252	0.062	0.109	0.0070	0.0035
5/16"	0.583	0.322	0.314	0.078	0.125	0.0080	0.0040
3/8"	0.680	0.385	0.377	0.094	0.141	0.0090	0.0045
7/16"	0.776	0.450	0.440	0.109	0.156	0.0100	0.0050
1/2"	0.869	0.512	0.502	0.125	0.171	0.0110	0.0055
9/16"	0.965	0.574	0.564	0.141	0.188	0.0120	0.0060
5/8"	1.072	0.640	0.628	0.156	0.203	0.0130	0.0065
3/4"	1.264	0.765	0.753	0.188	0.234	0.0150	0.0075
7/8"	1.455	0.890	0.878	0.219	0.266	0.0170	0.0085
1"	1.647	1.015	1.003	0.250	0.297	0.0190	0.0095
1-1/8"	1.838	1.144	1.129	0.281	0.328	0.0210	0.0105
1-1/4"	2.028	1.272	1.254	0.312	0.359	0.0230	0.0115
1-3/8"	2.210	1.399	1.379	0.344	0.391	0.0250	0.0125
1-1/2"	2.409	1.524	1.504	0.375	0.422	0.0270	0.0135

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Washer Dimensions

Washer Dimensions

S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS

Table W1S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS

USS DIMENSIONS FOR HARDENED FLAT WASHERS

Table W2USS DIMENSIONS FOR HARDENED FLAT WASHERS

S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS

Table W3S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS

USS DIMENSIONS FOR LOW CARBON FLAT WASHERS

Table W4USS DIMENSIONS FOR LOW CARBON FLAT WASHERS

SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS

Table W5SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS

HARDENED BEVELED WASHER DIMENSIONS

Table W5HARDENED BEVELED WASHER DIMENSIONS

Table W1
S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS

Table W2
USS DIMENSIONS FOR HARDENED FLAT WASHERS

Table W3
S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS

Table W4
USS DIMENSIONS FOR LOW CARBON FLAT WASHERS

Table W5
SPRING STEEL & HARDENED STEEL SPLIT LOCK WASHER DIMENSIONS

Table W5
HARDENED BEVELED WASHER DIMENSIONS