Model: 789PC3

Optical Element Retaining Ring

Properties:

Thread Direction

Right-hand

Thread Length

0.495 inches

Overall Length

Between 0.759 inches and 0.765 inches

Outside Diameter

Between 1.828 inches and 1.829 inches

Aperture Diameter

Between 1.451 inches and 1.457 inches

End Application

Telescope

Mounting Configuration

Three 0.063 in. Diameter lock screws

Thread Location

Internal

Internal Flange Thickness

Between 0.020 inches and 0.040 inches

Knurled Periphery

Not provided

Material

Aluminum alloy

Material

Aluminum alloy

Surface Treatment

Anodized black

NSN

1240-00-210-4395

Part Number

789PC3

Description

Ring,retaining,optical Element

CAGE

78039

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.

Part 789PC3 NSN 1240-00-210-4395

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22585

FIIG:

T271-J

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

72D

TCC:

SHC:

ACC:

Engineer Supplies

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Schedule B and Export

Schedule B: 9803200000
SITC: 93100
End Use: Military apparel and footwear
NAICS: 990000
USDA: 1

Freight Class: Military equipments not identified by kind