Part number reflects steel, open-end, non-keyed, with cadmium yellow plating only.

Please refer to the part numbering system above for further configurations.

All dimensions below are in inches.
Unit of Measure

NAS Part Number

NAS1330S4E-451

Thread Size

1/4-20 UNC-3B

Grip Range
(Min. - Max.)

.391 - .451

Identifying Mark

5 RAD

A
± .015

1.000

M
REF

0.435

L
± .015 (Closed End Keyless)

1.312

J
NOM (Closed End Keyless)

0.760

K
NOM (Closed End Keyless)

0.445

L
± .015 (Closed End Keyed)

1.312

J
NOM (Closed End Keyed)

0.760

K
NOM (Closed End Keyed)

0.445

ØB
± .015

0.529

C
NOM

0.089

ØD
+.000/-.004

0.332

Install Drill Size
REF

Q

Install Hole Size
Min. - Max.

.332 - .338

E
MAX

0.382

F
+.005/-.000

0.054

P
+.003/-.000

0.062

H

.056 - .058

Pull Up Factor

.095