Model: SM-D-850425

Optical Element Retaining Ring

Properties:

Thread Class
2b
Thread Pitch Diameters
+3.1389/+3.1459 inches
Thread Direction
Right-hand
Thread Length
0.480 inches
Overall Length
0.959 inches
Outside Diameter
3.270 inches
Thread Size
7/40-18
Aperture Diameter
2.670 inches
Screw Thread Series Designator
Uns
Mounting Configuration
0.086 in. Diameter hole 1
Thread Location
Internal
Internal Flange Thickness
0.049 inches
Knurled Periphery
Provided
Material
Aluminum alloy, 6061
Material
Aluminum alloy 6061
Surface Treatment
Dull black
Fsc Application Data
Night vision equipment
NSN
5855-01-039-2856
Part Number
SM-D-850425
Description
Ring,retaining,optical Element
CAGE
80063

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 SM-D-850425 NSN 5855-01-039-2856

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22585
FIIG:
T271-J
Concept No.:
App. Key:
JC
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
095190
UFC:
49790
LTL:
70.0
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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