National Item Identification Number

00-531-7071
005317071
6650-00-531-7071
6650005317071

National Stock Number

Item Name

SPACER,OPTICAL ELEMENT

Federal Supply Class

6650

Description

A tubular shaped item designed to maintain a predetermined distance between optical elements, such as lenses, reticles, and the like. The bore may be straight, tapered or counterbored, and may have annular serrations to converge or diverge light rays. The surfaces, which mate with the optics, are usually chamfered, concave, and/or have a specified finish designation in the range of 1 to 125 microinches arithmetical average (AA). See also SPACER, SLEEVE and CELL, OPTICAL ELEMENT.

Commercial and Government Entity Code (Supplier Data)

---

19200

---

---

NSN (National Stock Number) 6650-00-531-7071, 6650005317071 NIIN (National Identification Number) 00-531-7071, 005317071

Part Numbers (Reference Numbers)

5317071

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
OVERALL LENGTH
STRAIGHT BORE IN

Required Description

ALUMINUM ALLOY 2024
WW-T-700/3,T3,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
1.1