sect 13-clearance hole diameters
TRANSCRIPT
131Page of
TABLE OF CONTENTS
SINGLE HOLE DIAMETER
PAGE NO.CONTENTS
3
SECTION 13CLEARANCE HOLE DIAMETERS
4
5
2 HOLES IN LINE, COORDINATE TOLERANCING
SIMPLE HOLE PATTERNS, COORDINATE TOLERANCING
COMPLEX HOLE PATTERNS, COORDINATE TOLERANCING
2
TRUE POSITION TOLERANCING,
CLEARANCE HOLES, FLAT HEAD SCREWS
CLEARANCE HOLE DIAMETERS
TRUE POSITION TOLERANCING
CLEARANCE HOLE DIAMETER FORMULAS
SHOP STANDARD HOLE SIZES
FLAT WASHER REQUIREMENTS
TRUE POSITION TOLERANCING,
ALL PATTERNS, ALL PARTS CLEAR
ALL PATTERNS, ONE PART THREADED, OTHER PARTS CLEAR
SINGLE AND MULTIPLE HOLE APPLICATIONS
COORDINATE TOLERANCING FOR FLAT HEAD SCREWS
FLAT HEAD SCREWS ONLY. ALL PATTERNS.
FOR HARDWARE EXCEPT FLAT HEAD SCREWS
6
7
8
9
10
11
12
13
132Page of
SECTION 13CLEARANCE HOLE DIAMETERS
HOLE
DIA
SCREW
SIZE
.099
.093.086
(#2)
.113
.119
.112
(#4)
.141
.147
.138
(#6)
.170
.176
.164
(#8)
.193
.199
.190
(#10)
.253
.262
.250
(1/4)
.319
.328
.3125
(5/16)
.382
.391
.375
(3/8)
.449
.458
.4375
(7/16)
.511
.526
.500
(1/2)
.636
.651
.625
(5/8)
.761
.776
.750
(3/4)
SINGLE HOLE DIAMETER
1. This table shows clearance hole
diameters for standard screws and bolts.
These holes are to be selected for
"single hole" applications.
2. See page 12 for Flat Washer
requirements.
133Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.123
.117.086
.144
.150.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750
.176
.170
.204
.198
.231
.225
.295
.286
.353
.344
.418
.409
.489
.480
.557
.542
.682
.667
.,807
.792 .776
.791
.651
.666
.526
.541
.465
.474
.400
.409
.335
.344
.273
.282
.210
.216
.186
.192
.158
.164
.139
.133
.107
.113 .113
.107
.133
.139
.160
.154
.188
.182
.212
.206
.277
.268
.344
.335
.402
.393
.474
.465
.541
.526
.666
.651
.791
.776
.107
.101
.122
.128
.157
.151
.180
.174
.209
.203
.271
.262
.333
.324
.396
.387
.458
.449
.526
.511
.651
.636
.776
.761
.099
.093
.117
.123
.150
.144
.176
.170
.204
.198
.266
.257
.328
.319
.391
.382
.458
.449
.526
.511
.651
.636
.776
.761
.152
.146
.174
.180
.204
.198
.231
.225
.262
.253
.321
.312
.382
.373
.458
.449
.526
.511
.588
.573
.713
.698
.838
.823
.132
.126
.154
.160
.185
.179
.212
.206
.237
.231
.302
.293
.363
.354
.427
.418
.489
.480
.557
.542
.682
.667
.807
.792
.128
.122
.144
.150
.176
.170
.204
.198
.231
.225
.295
.286
.363
.354
.418
.409
.489
.480
.557
.542
.682
.667
.807
.792
.113
.107
.133
.139
.164
.158
.192
.186
.216
.210
.282
.273
.344
.335
.409
.400
.474
.465
.541
.526
.666
.651
.791
.776 .761
.776
.636
.651
.511
.526
.449
.458
.387
.396
.324
.333
.262
.271
.203
.209
.174
.180
.151
.157
.128
.122
.101
.107
CLEARANCE HOLE DIAMETERS
HOLE LOCATION TOLERANCES (ALL PARTS).005.010.016.020.030 .005.010.016.020.030
OTHER PART(S) CLEAR
1 PART THREADED
OTHER PART(S) CLEAR
2 HOLES IN LINE
COORDINATE TOLERANCING
1. Do not use this chart for Flat Head
screws.
2. See page 12 for Flat Washer
requirements.
134Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750.792
.807
.667
.682
.542
.557
.480
.489
.409
.418
.344
.353
.286
.295
.218
.224
.193
.199
.170
.176
.147
.141
.117
.123 .119
.113
.138
.144
.169
.163
.194
.188
.222
.216
.282
.273
.349
.340
.409
.400
.474
.465
.541
.526
.666
.651
.791
.776
.107
.101
.126
.132
.160
.154
.185
.179
.212
.206
.277
.268
.337
.328
.402
.393
.474
.465
.099
.093
.122
.128
.152
.146
.180
.174
.204
.198
.266
.257
.333
.324
.391
.382
.458
.449
.526
.511
.651
.636
.776
.761
.198
.204
.231
.225
.262
.253
.286
.277
.344
.335
.409
.400
.474
.465
.541
.526
.604
.589
.729
.714
.854
.839
.150
.144
.170
.176
.204
.198
.231
.225
.262
.253
.318
.309
.382
.373
.443
.434
.510
.495
.573
.558
.698
.683
.823
.808
.139
.133
.158
.164
.192
.186
.216
.210
.241
.235
.307
.298
.373
.364
.443
.434
.510
.495
.573
.698
.683
.823
.808
CLEARANCE HOLE DIAMETERS
HOLE LOCATION TOLERANCES (ALL PARTS).005.010.016.020.030 .005.010.016.020.030
OTHER PART(S) CLEAR
1 PART THREADED
ALL PARTS CLEAR
SIMPLE HOLE PATTERNS
COORDINATE TOLERANCING
1. Do not use for 3 or more holes in line.
2. See page 12 for Flat Washer requirements.
.667
.682
.542
.557
.480
.489
.418
.427
.356
.365
.293
.302
.235
.241
.206
.212
.182
.188
.154
.160
.139
.133
.792
.807
.776
.791
.651
.666
.526
.541
.558
.123
.117
.141
.147
.176
.170
.199
.193
.224
.218
.295
.286
.353
.344
.418
.409
.489
.480
.557
.542
.682
.667
.807
.792
.541
.526
.666
.651
.791
.776
.465
.474
.393
.402
.328
.337
.268
.277
.206
.212
.179
.185
.154
.160
.132
.126
.101
.107
135Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750
.635
.620
.698
.683
.823
.808
.948
.933
.510
.495
.573
.558
.635
.620
.760
.745
.885
.870
.206
.212
.237
.231
.266
.257
.295
.286
.353
.344
.418
.409
.489
.480
.557
.542
.620
.745
.730
.870
.855
CLEARANCE HOLE DIAMETERS
HOLE LOCATION TOLERANCES (ALL PARTS).005.010.016.020.030 .005.010.016.020.030
OTHER PART(S) CLEAR
1 PART THREADED
ALL PARTS CLEAR
COMPLEX HOLE PATERNS
COORDINATE TOLERANCING
1. See page 12 for Flat Washer requirements.
.180
.174
.605
.839
.854
.714
.729
.589
.604
.526
.541
.465
.474
.400
.409
.335
.344
.277
.286
.253
.262
.225
.231
.204
.198
.808
.823
.683
.698
.558
.573
.495
.510
.434
.443
.373
.382
.309
.318
.253
.262
.225
.231
.198
.204
.176
.170
.144
.150
.558
.808
.823
.683
.698
.573
.495
.510
.434
.443
.364
.373
.298
.307
.235
.241
.210
.216
.186
.192
.164
.158
.133
.139
.792
.807
.667
.682
.542
.557
.480
.489
.409
.418
.344
.353
.286
.295
.218
.224
.193
.199
.170
.176
.147
.141
.117
.123 .107
.101
.126
.132
.160
.154
.185
.179
.212
.206
.277
.268
.337
.328
.402
.393
.474
.465
.776
.791
.651
.666
.526
.541
.364
.373
.434
.443
.495
.510
.558
.573
.434
.443
.364
.373
.309
.318
.277
.286
.253
.262
.150
.144
.170
.176
.204
.198
.231
.225
.262
.253
.318
.309
.382
.373
.443
.434
.510
.495
.573
.558
.698
.683
.823
.808
.123
.117
.141
.147
.176
.170
.199
.193
.224
.218
.295
.286
.353
.344
.418
.409
.489
.480
.557
.542
.682
.667
.807
.792
136Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750
.465
.541
.526
.666
.651
.791
.776
.133
.139
.160
.154
.185
.179
.212
.206
.277
.268
.337
.328
.402
.393
CLEARANCE HOLE DIAMETERS
TRUE POSITION DIAMETER
.030.035.040.045.050 .005.010.015.020.025
TRUE POSITION TOLERANCING
ALL PATTERNS - ALL PARTS CLEAR
1. See page 12 for Flat Washer requirements.
.144
.138
.243
.249
.216
.222
.188
.194
.169
.163
.418
.427
.354
.363
.293
.302
.231
.237
.206
,212
.179
.185
.160
.154
.126
.132
.418
.427
.354
.363
.286
.295
.225
.231
.203
.209
.174
.180
.157
.151
.122
.128
.193
.199
,216
.222
.277
.286
.340
.349
.400
.409
.335
.344
.273
.282
.210
.216
.186
.192
.158
.164
.107
.101
.122
.128
.157
.151
.180
.174
.209
.203
.271
.262
.333
.324
.396
.387
.458
.449
.526
.511
.651
.636
.776
.761
.099
.093
.117
.123
.150
.144
.176
.170
.204
.198
.266
.257
.328
.319
.391
.382
.139
.133
.158
.164
.192
.186
.216
.210
.241
.235
.307
.298
.373
.364
.443
.434
.510
.495
.573
.698
.683
.823
.808
.558.558
.808
.823
.683
.698
.573
.495
.510
.434
.443
.364
.373
.309
.318
.792
.807
.667
.682
.542
.557
.480
.489
.792
.807
.667
.682
.542
.557
.480
.489
.792
.807
.667
.682
.542
.557
.480
.489
.409
.418
.344
.353
.286
.295
.225
.231
.198
.204
.170
.176
.150
.144
.117
.123
.163
.169
.144
.138
.113
.119
.139
.133
.107
.113
.474
.101
.107
.474
.409
.400
.776
.791
.651
.666
.526
.541
.465 .465
.541
.526
.666
.651
.791
.776
.474
.761
.776
.636
.651
.511
.526
.449
.458
137Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750
.144
.150
.176
.170
.204
.198
.231
.225
.295
.286
.353
.344
.418
.409
CLEARANCE HOLE DIAMETERS
TRUE POSITION DIAMETER
.030.035.040.045.050 .005.010.015.020.025
TRUE POSITION TOLERANCING
ALL PATTERNS
1. See page 12 for Flat Washer requirements.
.293
.302
,268
.277
.239
.245
.465
.474
.393
.402
.335
.344
.273
.282
.246
.255
.218
.224
.199
.193
.170
.176
.449
.458
.387
.396
.324
.333
.262
.271
.235
.241
.210
.216
.188
.182
.158
.164 .107
.101
.122
.128
.157
.151
.180
.174
.209
.203
.271
.262
.333
.324
.396
.387
.458
.449
.526
.511
.651
.636
.776
.761
.203
.209
.237
.231
.266
.257
.295
.286
.349
.340.354
.363
.839
.854
.714
.729
.589
.604
.526
.541
.823
.838
.698
.713
.573
.588
.511
.526
.823
.838
.698
.713
.573
.588
.511
.526
.449
.458
.373
.382
.312
.321
.253
.262
.225
.231
.198
.204
.180
.174
.146
.152
.117
.123
.465
.541
.526
.666
.651
.791
.776
.400
.409
.474
.113
.107
.133
.139
.164
.158
.192
.186
.216
.210
.282
.273
.344
.335
.318
.309
.373
.364
.443
.434
.510
.495
.573
.698
.683
.823
.808
.558
.163
.169
.194
.188
.222
.216
.249
.243
.138
.144
.489
.480
.557
.542
.682
.667
.807
.792
.132
.126
.154
.160
.185
.179
,212
.206
.237
.231
.302
.293
.363
.354
.427
.418.465
.474
.409
.418
.605
.855
.870
.730
.745
.620
.542
.557
.480
.489
.418
.427
.557
.542
.620
.745
.730
.870
.855
.605
.792
.807
.667
.682
.542
.557
.480
.489
ONE PART THREADED, OTHER PART (S) CLEAR
138Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
CLEARANCE HOLES, FLAT HEAD SCREWS
.210
.216
.186
.192
.158
.164
.000
.067
.000
.060
.000
.046
.000
.042
.000
.030
.000
.030
.024
.000
.000
.024
.23
.24
.30
.29
.35
.34
.42
.40
.54
.52.273
.282
.78
.80
.65
.67
.400
.409
.335
.344
A
DIA
C
DIA
D
MIN
E F
MIN
.133
.139
.107
.113
.18
.19
.300
.248
.197
.147
.126
.104
.083
.060 .096
.124
.157
.171
.217
.269
.358
.417
1. This chart delineates the diameters to be applied when
designing countersunk holes for flat head screws.
A
C
82�2
DE
E
F
282�
C
A
Multiple Hole Application Single Hole Application
139Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
CLEARANCE HOLE DIAMETERS
CLEARANCE HOLE LOCATION TOLERANCES
.005.010.016.020.030 .005.010.016.020.030
CLEARANCE HOLE DIAMETERS FOR FLAT HEAD SCREWS
COORDINATE TOLERANCING
.152
.146
.449
.458
.373
.382
.312
.321
.253
.262
.225
.231
.198
.204
.180
.174
.418
.427
.354
.363
.293
.302
.231
.237
.206
.212
.179
.185
.160
.154
.126
.132
.409
.418
.354
.363
.286
.295
.225
.231
.198
.204
.170
.176
.150
.144
.122
.128
.400
.409
.335
.344
.273
.282
.210
.216
.186
.192
.158
.164
.139
.133
.107
.113 .107
.101
.122
.128
.157
.151
.180
.174
.209
.203
.271
.262
.333
.324
.396
.387 .409
.418
.344
.353
.286
.295
.218
.224
.193
.199
.170
.176
.147
.141
.117
.123
.434
.443
.373
.382
.309
.318
.253
.262
.225
.231
.198
.204
.176
.170
.144
.150
.286
.277
.318
.309
.373
.364
.443
.434
.573
.558
.510
.495
.443
.434
.030 .020 .016 .010 .005
.480
.489
.409
.418
.344
.353
.286
.295
.257
.266
.231
.237
.495
.510
-
.465
.474
.400
.409
.335
.344
.277
.286
.253
.262
.225
.231
.204
.198
.434
.443
.373
.382
.309
.318
.253
.262
.225
.231
.198
.204
.176
.170
.144
.150
.434
.443
.364
.373
.298
.307
.235
.241
.210
.216
.186
.192
.164
.158
.133
.139
.409
.418
.344
.353
.286
.295
.218
.224
.193
.199
.170
.176
.147
.141
.117
.123 .107
.101
.126
.132
.160
.154
.185
.179
.212
.206
.277
.268
.337
.328
.402
.393
2 Holes in Line 2,3,4 Holes Rectangular All Patterns of 3 or More
Holes in LinePattern
1310Page of
SECTION 13CLEARANCE HOLE DIAMETERS
FLAT HEAD SCREWS ONLY
ALL PATTERNS
1. See page 12 for Flat Washer requirements.
TRUE POSITION TOLERANCING
SCREW
SIZE
.086
.112
.138
.164
.190
.250
.3125
.375
.144
.150
.176
.170
.204
.198
.231
.225
.295
.286
.353
.344
.418
.409
CLEARANCE HOLE DIAMETERS
TRUE POSITION DIAMETER
.030.035.040.045.050 .005.010.015.020.025
.293
.302
,268
.277
.239
.245
.465
.474
.393
.402
.335
.344
.273
.282
.246
.255
.218
.224
.199
.193
.170
.176
.449
.458
.387
.396
.324
.333
.262
.271
.235
.241
.210
.216
.188
.182
.158
.164 .107
.101
.122
.128
.157
.151
.180
.174
.209
.203
.271
.262
.333
.324
.396
.387
-
.237
.231
.266
.257
.295
.286
.349
.340.354
.363
.449
.458
.373
.382
.312
.321
.253
.262
.225
.231
.198
.204
.180
.174
.146
.152
.117
.123
.400
.409
.113
.107
.133
.139
.164
.158
.192
.186
.216
.210
.282
.273
.344
.335
.318
.309
.373
.364
.443
.434
.163
.169
.194
.188
.222
.216
.249
.243
.138
.144 .132
.126
.154
.160
.185
.179
,212
.206
.237
.231
.302
.293
.363
.354
.427
.418.465
.474
.409
.418
.480
.489
.418
.427
-
--
1311Page of
SECTION 13CLEARANCE HOLE DIAMETERS
NON-LISTED TOLERANCES
CLEARANCE HOLE DIAMETER FORMULAS FOR HARDWARE
EXCEPT FLAT HEAD SCREWS
2 Holes in Line
All Parts Clear1 Part Threaded
Other Part(s) Clear
D1
D2
D3
DS
T1
2T
3T
= Min Hole Dia Part 1
= Min Hole Dia Part 2
= Min Hole Dia All Parts
= Dia of Screw or Stud = True Position Dia on Part 2
= True Position Dia on Part 1
= ± Tol on Part 2
= ± Tol on Part 1
4T
Simple Hole Pattern
Complex Hole Pattern
(3 or More Holes inLine)
True Position
All Patterns
D2= (T1 + T
2 ) + 2D
S - D1
D3= ( (
T1+ T
2
2+ S
D
2D = 1.414 ( 1
T +2
T ) + 2D
S - D1
3D = 0.707( 1
T +T2 ) + D
S
SD
+)2T+T
11.414(=D3
1D-S
D2+)T
2+T
1= 2.828(D2
DS+
2
4T+
3T
((=3D
1D-S
D2+)4
T+3
T(=2D
SD
+)2T+
1T(=
2D
SD
+)T2
+T1(= 1.414D
2
2D = 2.828( 1
T +2
T ) + DS
D2= (T3 + T
4 ) + DS
*
*
*
*
1. These formulas are used to calculate theoretical minimum
hole diameters for mating parts with coordinate tolerancing
not listed on pages 2,3, and 4 or with unequal tolerances,
or existing holes in one part.
2. To use these formulas, you must know the diameter of
3. See page 13 for converting the theoretical minimum hole
diameter to shop standard hole size.
D1
1312Page of
SECTION 13CLEARANCE HOLE DIAMETERS
FLAT WASHER REQUIREMENTS
.086
.112
.138
.164
.190
.250
.3125
.375
.4375
.500
.625
.750 -
.530
.438
.347
.259
.221
.184
.145
.108 .106
.134
.164
.196
.225
.317
.390
.463
.535
.607
.753
.899
.098
.131
.165
.199
.232
.293
.370
.447
.524
.601
.756
.911
.147
.183
.224
.234
.275
.393
.454
.546
.631
.732
.911
1.035
SIZE
SCREW
Pan
Head
Screw Washer
Lock
Screw
Head
SocketNote 2
Note 1
-
-
-
MAXIMUM HOLE DIAMETER
1. This table should be used as a guide to determine when
a flat washer must be used due to excessively large hole
diameters as depicted in notes 2 and 3.
2. Flat washer must be used under pan head screw, lockwasher, socket head screw when maximum hole diameter
exceeds value shown in table.
3. Special large outside diameter washer required whenmaximum hole diameter exceeds value shown in this column.
1313Page of
SECTION 13CLEARANCE HOLE DIAMETERS
SHOP STANDARD HOLE SIZES
SHOP STANDARD HOLE SIZES
.107
.113
.101
.107
.093
.099
.113
.119
.122
.128
.117
.123
.132
.126 ,154
.160
.152
.146
.157
.151
.150
.144
.139
.133
.144
.138
.147
.141
.186
.192
.185
.179
.188
.182
.180
.174
.164
.158
.169
.163
.176
.170
.216
.222
.212
.206
.216
.210
.209
.203
.194
.188
.199
.193
.204
.198
.246
.255
.245
.239
.249
.243
.241
.235
.224
.218
.231
.225
.237
.231
.286
.295
.282
.273
.286
.277
.277
.268
.262
.253
.266
.257
.271
.262
.328
.337
.328
.319
.333
.324
.321
.312
.302
.293
.307
.298
.318
.309
.373
.382
.365
.356
.373
.364
.363
.354
.344
.335
.349
.340
.353
.344
.434
.443
.418
.409
.427
.418
.409
.400
.391
.382
.396
.387
.402
.393
.542
.557
.526
.511
.541
.526
.510
.495
.458
.449
.474
.465
.489
.480
.651
.666
.635
.620
.651
.636
.620
.605
.573
.558
.588
.573
.604
.589 .689
.713
.683
.698
.667
.682
.714
.729
.745
.760
.730
.745
.776
.761
.808
.823
.792
.807
.776
.791
.823
.838
.855
.870
.839
.854
.885
.870
.917
.932
.901
.916
.886
.901
.933
.948
.964
.979
.948
.963
.994
.979
1. After determining the theoretical minimum hole diameter
from the formulas listed on page 11, select the shopstandard clearance hole values from this chart, whose
minimum is equal to or nearest above the theoretical minimum hole diameter.