Model: 957C048132

Optical Element Retaining Ring

Properties:

Thread Pitch Diameters

+3.4820/+3.4867 inches

Thread Direction

Right-hand

Outside Diameter

3.750 inches

Thread Size

3 1/2-36

Aperture Diameter

Between 3.470 inches and 3.477 inches

Screw Thread Series Designator

Uns

Thread Location

Internal

Internal Flange Thickness

0.030 inches

Knurled Periphery

Not provided

Material

Steel, stainless

Material

Stainless steel

Surface Treatment

Passivated, mil-f-14072, finish e300

NSN

1240-01-068-2422

Part Number

957C048132

Description

Ring,retaining,optical Element

CAGE

34228

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 957C048132 NSN 1240-01-068-2422

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:

0.2000lbs

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:

058110

UFC:

33110

LTL:

200.0

LCL:

200.0

WCC:

744

TCC:

SHC:

ACC:

Medical 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