National Item Identification Number

01-164-4003

National Stock Number

Item Name

STUD,RECESSED AND STEPPED

Federal Supply Class

5307

Description

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends on which the nominal diameter of one threaded section is greater than the other. The unthreaded section must have more than one diameter, none of which may be larger than the maximum major diameter of the larger thread. It may be thread relieved. Excludes items with tapered threads.

Commercial and Government Entity Code (Supplier Data)

---

K0378

---

---

Reference Numbers (Part Numbers)

UBS21E12

Required Categories

OVERALL LENGTH
THREAD SERIES DESIGNATOR
NOMINAL THREAD SIZE
THREAD CLASS
THR

Required Description

1.850 INCHES NOMINAL
UNF NUT THREAD
UNC STUD THREAD
0.250 INCHES NUT THREAD;