NOMISNAL BOLT SIZE

(in.)

BODY DIAMETER

E

DIAMETER OF BEARING SURFACE

D

HEIGHT

H

RADIUS OF FILLET

R

THREAD LENGTH

LT(ref)

TRANSITION THREAD LENGTH

Y(ref.)

WIDTH ACROSS FLATS OF BOLT TIP

F

WIDTH ACROSS CORNERS OF BOLT TIP

G

MAX

MIN

MAX

MIN

BASIC

MAX

MIN

MAX

MIN

BASIC

MAX

MAX

MIN

APPROX.

5/8-11 UNC

0.642

0.605

1.209

1.154

25/64

0.403

0.378

0.062

0.021

1.250

0.220

0.453

0.441

0.516

3/4-10 UNC

0.768

0.729

1.484

1.429

15/32

0.483

0.455

0.062

0.021

1.380

0.250

0.535

0.524

0.610

7/8-9 UNC

0.895

0.852

1.654

1.575

35/64

0.563

0.531

0.062

0.031

1.500

0.280

0.614

0.602

0.701

1-8 UNC

1.022

0.976

1.890

1.611

39/64

0.627

0.591

0.093

0.062

1.750

0.310

0.717

0.705

0.815