Acorn Cap Nuts                                                                             SAE J483

Nominal Size

Width Across Flats(F)

Width Across Corners(G)

Body Dia(A)

Overall Height(H)

Hexagon Height(B)

Nose Radius

Body Radius

Drill Depth(T)

Full Thread(U)

Basic

Max

Min

Max

Min

Max

Min

6

5/16

.3125

.302

.361

.344

.30

.34

.16

.08

.17

.25

.16

8

5/16

.3125

.302

.361

.344

.30

.34

.16

.08

.17

.25

.16

10

3/8

.3750

.362

.433

.413

.36

.41

.19

.09

.22

.28

.19

12

3/8

.3750

.362

.433

.413

.36

.41

.19

.09

.22

.31

.22

1/4

7/16

.4375

.428

.505

.488

.41

.47

.22

.11

.25

.34

.25

5/16

1/2

.5000

.489

.577

.557

.47

.53

.25

.12

.28

.41

.31

3/8

9/16

.5625

.551

.650

.628

.53

.62

.28

.14

.33

.45

.38

7/16

5/8

.6250

.612

.722

.698

.59

.69

.31

.16

.36

.52

.44

1/2

3/4

.7500

.736

.866

.840

.72

.81

.38

.19

.42

.59

.50

9/16

7/8

.8750

.861

1.010

.982

.84

.94

.44

.22

.50

.69

.56

5/8

15/16

.9375

.922

1.083

1.051

.91

1.00

.47

.23

.53

.75

.62

3/4

1-1/16

1.0625

1.045

1.227

1.191

1.03

1.16

.53

.27

.59

.88

.75

7/8

1-1/4

1.2500

1.231

1.443

1.403

1.22

1.36

.62

.31

.70

1.00

.88

1

1-7/16

1.4375

1.417

1.660

1.615

1.41

1.55

.72

.36

.81

1.12

1.00

1-1/8

1-5/8

1.6250

1.602

1.876

1.826

1.59

1.75

.81

.41

.92

1.31

1.12

1-1/4

1-13/16

1.8125

1.788

2.093

2.038

1.78

1.95

.91

.45

1.03

1.44

1.25