NSN

1240-00-171-4178

Window,Optical Instrument

FSC 1240OPTICAL SIGHTING AND RANGING EQUIPMENTFSG 12FIRE CONTROL EQUIPMENT

Unit Price

$190.48

per EA

2 parts / 2 mfrs

Part Numbers for NSN 1240-00-171-41782 records
Part NumberCAGEManufacturerRNCCRNVC
104015510001Navair and Navsea Managed Original Design Activity Dwg Not Material/Parts Supplier32
5247621587Optical Technology Devices Inc59
Manufacturers (2)

Navair and Navsea Managed Original Design Activity Dwg Not Material/Parts Supplier

CAGE 10001
View NSNs

Optical Technology Devices Inc

CAGE 21587
View NSNs
Price History
Effective DateUnit PriceUISLC
01-OCT-2025$190.48EA0
01-OCT-2025$190.48EA0
Identification Data

DEMIL

D

HMIC

N

PMIC

A

ESD/EMI

Item Characteristics
MRCRequirementReply
ABMZDIAMETER50.950 MILLIMETERS MINIMUM AND 51.000 MILLIMETERS MAXIMUM
ABNMTHICKNESS5.800 MILLIMETERS MINIMUM AND 6.200 MILLIMETERS MAXIMUM
AJEFBEVEL DEPTH0.750 MILLIMETERS NOMINAL
BMMXREFRACTION INDEX1.5170 NOMINAL
BMSGPOLISHED SURFACEBOTH
BMSHDISPERSION64.5 ANGSTROMS NOMINAL
BMSKREFLECTION REDUCING SURFACEBOTH
BMSMPOLISHED PERIPHERYNOT PROVIDED
BMSPBEVEL ANGLE IN DEG45.000 NOMINAL
MATTMATERIALGLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
MDCLMATERIAL DOCUMENT AND CLASSIFICATIONJAN-G-174, TYPE 517-645, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
ZZZVFSC APPLICATION DATATELESCOPE MK 102 MOD 3

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Quick Reference

NSN1240-00-171-4178
NIIN001714178
FSC1240
PRICE$190.48
DEMILD
PARTS2
MFRS2

About NSN 1240-00-171-4178

NSN 1240-00-171-4178 is a National Stock Number assigned to Window,Optical Instrument. This NSN part number belongs to Federal Supply Class 1240 (OPTICAL SIGHTING AND RANGING EQUIPMENT) under Federal Supply Group 12 (FIRE CONTROL EQUIPMENT). There are 2 part numbers associated with this NSN from 2 manufacturers.

The current government unit price for NSN 1240-00-171-4178 is $190.48. Price history shows 2 recorded price changes.

To find the part number for NSN 1240-00-171-4178, refer to the part number cross-reference table above. Each part number is linked to its manufacturer through a CAGE (Commercial and Government Entity) code.