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Open End Engineers Wrench 15° Installation Design Clearance Sizes
Reference (SAE) Society of Automotive Engineers

General Engineering Reviews | Engineering Applications and Design

Open End Engineers Wrench 15° Installation Design Clearance Sizes - Wrench Clearance Chart data derived from SAE drafting manual and ANSI/ASME B18.2.2-1987 (R1999) wrench opining for nuts/bolts. This represents the recommended installation clearances for standard 15 degree open end wrenches.


90 Degree Installation


120 Degree + Installation

 

Note: All dimensions are in inches

Wrench Size

Bolt Center Wall Clearance Minimum

A

Wall Radius Maximum

B

Minimum Bolt Spacing

C

Bolt Center Wall Clearance Minimum

D

Bolt Center Wall Clearance Minimum

E

Wall Radius Maximum

F

Reference Wrench End Clearance

G

Wrench Thickness or Width Maximum

H

.156
.220
.250
.390
.160
.250
.200
.030
.094
.188
.250
.280
.430
.190
.270
.230
.030
.172
.250
.280
.340
.530
.270
.310
.310
.030
.172
.312
.380
.470
.660
.280
.390
.390
.050
.203
.344
.420
.500
.750
.340
.450
.450
.050
.203
.375
.420
.500
.780
.360
.450
.520
.050
.219
.438
.470
.590
.890
.420
.520
.640
.050
.250
.500
.520
.640
1.000
.470
.580
.660
.050
.266
.562
.590
.770
1.130
.520
.660
.700
.050
.297
.594
.640
.830
1.210
.530
.700
.700
.050
.344
.625
.640
.830
1.230
.550
.700
.700
.050
.344
.688
.770
.920
1.470
.660
.880
.800
.060
.375
.750
.770
.920
1.510
.670
.880
.800
.060
.375
.781
.830
.950
1.550
.690
.890
.840
.060
.375
.812
.910
1.120
1.660
.720
.970
.860
.060
.406
.875
.970
1.150
1.810
.800
1.060
.910
.060
.438
.938
.970
1.150
1.850
.810
1.060
.950
.060
.438
1.000
1.050
1.230
2.000
.880
1.160
1.060
.060
.500
1.062
1.090
1.250
2.100
.970
1.200
1.200
.080
.500
1.125
1.140
1.370
2.210
1.000
1.270
1.230
.080
.500
1.250
1.270
1.420
2.440
1.080
1.390
1.310
.080
.562
1.312
1.390
1.690
2.630
1.170
1.520
1.340
.080
.562
1.438
1.470
1.720
2.800
1.250
1.590
1.340
.090
.641
1.500
1.470
1.720
2.840
1.270
1.590
1.450
.090
.641
1.625
1.560
1.880
3.100
1.380
1.750
1.560
.090
.641

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