Model: 7791929

Optical Element Retaining Ring

Special Features:

Drilled face drive type, two 0.077 in. Dia. Holes spaced 180 degrees apart on a 1.156 in. Bolt circle dia. On internal flange end.

Properties:

Thread Class

Thread Direction

Right-hand

Groove Diameter

Between 1.322 inches and 1.330 inches

Thread Length

0.200 inches

Overall Length

Between 0.340 inches and 0.341 inches

Outside Diameter

Between 1.377 inches and 1.385 inches

Thread Size

1.312 in.-48

Aperture Diameter

Between 0.880 inches and 0.920 inches

Inner Groove Width

Between 0.050 inches and 0.070 inches

Screw Thread Series Designator

Uns

Thread Location

Internal

Internal Flange Thickness

Between 0.060 inches and 0.080 inches

Groove Location

Adjacent to internal flange

Knurled Periphery

Not provided

Material

Brass, qq-b-626, comp 360, 1/2h

Material

Brass, qq-b-626, comp 360, 1/2h

Surface Treatment

Black oxide, mil-f-495

Surface Treatment

Black oxide, mil-f-495

Fsc Application Data

Sight, reflex

NSN

1240-00-931-8901

Part Number

7791929

Description

Ring,retaining,optical Element

CAGE

19200

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 7791929 NSN 1240-00-931-8901

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:

095190

UFC:

49790

LTL:

70.0

LCL:

200.0

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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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