Hex Slotted Nuts                                                                  ASNI/ASME B18.2.2   1986

Nominal Size

Width Across Flats(F)

Width Across Corners(G)

Thickness(H)

Unslotted Thickness(T)

Width of Slot(S)

Runout of Bearing Surface

Basic

Max

Min

Max

Min

Basic

Max

Min

Max

Min

Max

Min

Max

1/4

7/16

.438

.428

.505

.488

7/32

.226

.212

.14

.12

.10

.07

.015

5/16

1/2

.500

.489

.577

.557

17/64

.273

.258

.18

.16

.12

.09

.016

3/8

9/16

.562

.551

.650

.628

21/64

.337

.320

.21

.19

.15

.12

.018

7/16

11/16

.688

.675

.794

.768

3/8

.385

.365

.23

.21

.15

.12

.018

1/2

3/4

.750

.736

.866

.840

7/16

.448

.427

.29

.27

.18

.15

.019

9/16

7/8

.875

.861

1.010

.982

31/64

.496

.473

.31

.29

.18

.15

.020

5/8

15/16

.938

.922

1.083

1.051

35/64

.559

.535

.34

.32

.24

.18

.021

3/4

1-1/8

1.125

1.088

1.299

1.240

41/64

.665

.617

.40

.38

.24

.18

.023

7/8

1-5/16

1.312

1.269

1.516

1.447

3/4

.776

.724

.52

.49

.24

.18

.025

1

1-1/2

1.500

1.450

1.732

1.653

55/64

.887

.831

.59

.56

.30

.24

.027

1-1/8

1-11/16

1.688

1.631

1.949

1.859

31/32

.999

.939

.64

.61

.33

.24

.030

1-1/4

1-7/8

1.875

1.812

2.165

2.066

1-1/16

1.094

1.030

.70

.67

.40

.31

.033

1-3/8

2-1/16

2.062

1.994

2.382

2.273

1-11/64

1.206

1.138

.82

.78

.40

.31

.036

1-1/2

2-1/4

2.250

2.175

2.598

2.480

1-9/32

1.317

1.245

.86

.82

.46

.37

.039