National Item Identification Number

00-157-1443
001571443
6650-00-157-1443
6650001571443

National Stock Number

Item Name

RING,RETAINING,OPTICAL ELEMENT

Federal Supply Class

6650

Description

A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.

Commercial and Government Entity Code (Supplier Data)

---

53711

---

---

56232

---

---

Reference Numbers (Part Numbers)

417531PC2
417531PC2
417531PC2

Required Categories

MATERIAL
SURFACE TREATMENT
OVERALL LENGTH
OUTSIDE DIAMETER
INTERNAL FLANGE T

Required Description

STEEL
CHEMICAL
0.344 INCHES NOMINAL
1.875 INCHES NOMINAL
0.094 INCHES NOMINA