Observation Window

114C1156-4

114C1156-4
(NSN) National Stock Number
9340-00-073-8685
Federal Supply Classification
9340 Glass Fabricated Materials
Item Name Code
16880
Schedule B Code
7016900000
Summary

1 ply quantity, 3.380 inches minimum and 3.420 inches maximum overall length, 1.330 inches minimum and 1.370 inches maximum overall width, 0.125 inches nominal overall thickness, clear material transparency, 4 mtg holes,0.124 in. min,0.131 in. max dia,counterbored 0.249 in. min,.257 in. max dia,2.960 in. c to c distance along the lg,0.910 in. c to c distance along the w special features

DAC HCC DMIL RNCC
X - - 5
RNVC SADC MSDS RNAAC
2 - - XX
Identification

A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.

INC FIIG Concept Condition
16880 A15000 - 2
Specifications
Ply Quantity
1
Details The actual number of full layers of material.
Overall Length
3.380 inches minimum and 3.420 inches maximum
Details The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
Overall Width
1.330 inches minimum and 1.370 inches maximum
Details An overall measurement taken at right angles to the length of an item,in distinction from thickness.
Overall Thickness
0.125 inches nominal
Details An overall measurement of the smallest dimension of an item,in distinction from length or width.
Material Transparency
clear
Details The ability of the material to transmit light and allow visual perception.
Special Features
4 mtg holes,0.124 in. min,0.131 in. max dia,counterbored 0.249 in. min,.257 in. max dia,2.960 in. c to c distance along the lg,0.910 in. c to c distance along the w
Details Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.
Special Markings
numerals and calibrations engraved and filled w/fluorescent luminescent pale yellow paint per mil-l-25142
Details Markings included on an item for the purpose of offering instructions or warnings or to indicate the purpose,function,or application of the item.excludes manufacturers part numbers,symbols,or the like.
Material
plastic
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
mil-p-5425,finish a mil spec single material response
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Style Designator
square corners
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
114C1156-4 77272 X - 3 2 - XX
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
77670 - W W
RVC WCC TCC SHC
- 772 Z 9

Provided with every order

Order with confidence, we are a valued certified supplier serving customers in the military and aerospace industries.

  • Counterfeit Parts Prevention
  • 100% Product Inspections
  • 7 Year Record Retention
  • On Time Delivery
  • HAZMAT Certified
  • Worldwide Shipping
Manufacturer
THE BOEING COMPANY DIV DEFENSE
CAGE: 81205
TUKWILA , WA , 98108-4002
UNITED STATES
View Products
FAQs
Frequently asked questions for NSN 9340-00-073-8685
What is the NIIN of the NSN 9340-00-073-8685?
The National Item Identification Number (NIIN) of the NSN 9340-00-073-8685 is 00-073-8685
When the NSN 9340-00-073-8685 was assigned to the Federal Catalog?
It was assigned 62 years ago, on Tue, Jan 1, 1963
Does the NSN 9340-00-073-8685 contain any precious metals?
Does not contain precious metal
Does the NSN 9340-00-073-8685 contain any hazardous material?
No data in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Similar Products
Who we are?

At our core, we specialize in sourcing and supplying high-quality NSN (National Stock Number) parts to industries that demand precision and reliability.

From aerospace and defense to manufacturing and logistics, we provide the essential components that keep critical systems running.

Contact
350 Tenth Ave
San Diego, CA, 92101
United States
© 2025 National Stock Number (NSN) Parts Store, Inc. All rights reserved.
Made in USA