Optical Instrument Window

NSN: 1240-00-171-4220 | Model: 181146PC1

A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

NSN Properties and Flags

NATO Stock Number

1240-00-171-4220

DEMIL

Yes - ITAR Controlled (Code D)

Diameter

Between 2.5886 inches and 2.5984 inches

Thickness

0.3937 inches

Length

Between 3.4941 inches and 3.5039 inches

Refraction Index

1.5170

Polished Surface

Both

Dispersion

64.5 angstroms

Reflection Reducing Surface

Both

Polished Periphery

Not provided

Special Features

4 corners 12.7 mm /0.500 in./ radius

Material

Glass, mil-g-16592, grade b

Material

Glass, mil-g-16592, grade b

Fsc Application Data

Periscope mk 23, mod 0

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 1240-00-171-4220 Datasheet

Supply Class (FSC):

Optical Sighting And Ranging Equipment

Cross Reference:

181146PC1

Cage Codes:

Navair and Navsea Managed (CAGE 10001)

Schedule B & Trade:

Schedule B: 9803200000 (NAICS 990000)

Military equipments not identified by kind
SITC: 93100

Special transactions and commodities not classified according to kind
End Use: 50060

Military apparel and footwear

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

A - Item does not contain precious metal.

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

086700 - Glass, flat, noi
WCC:

704 - Glass or glass items
SHC:

9 - Other or no special handling required (sh)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

E - Engineer supplies, other than those listed under code b.
LTL:

W - Rating variable
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
X
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
7
MGMT_CTL
9b-----
Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $1,051.66 to $1,752.77..
Does NSN 1240-00-171-4220 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy
What is the NIIN of NSN 1240-00-171-4220?
001714220 or 00-171-4220
Does NSN 1240-00-171-4220 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 1240-00-171-4220?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963