1. Home /
  2. FSC NSN Catalog /
  3. Plastics Fabricated Materials /
  4. 4500170

NSN 4500170

Observation Window

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

feat criticality code justification, pacer special end item identification, hardness critical item special features.

NSN 9330-01-254-2978 Datasheet

(NSN) National Stock Number
9330-01-254-2978
(FSG) Federal Supply Group
93 - Nonmetallic Fabricated Materials
(FSC) Federal Supply Classification
9330 - Plastics Fabricated Materials
(NIIN) National Item Identification Number
01-254-2978
Requires Demilitarization
Yes
(INC) Item Name Code
16880
Date
Tue, May 5, 1987
Schedule B Code
3926909988
End Item Identification
pacer special
Criticality Code Justification
feat
Special Features
hardness critical item

Identification

Demilitarization Code
B - Usml items - mutilation to the point of scrap required worldwide. (note 7).
Precious Metals Indicator
A - Item does not contain precious metal.
Hazardous Metals Indicator
P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.
Pseudo Item Name Code
0016880

Cross Reference

CAGE Codes

14170
Hughes Missile Systems Co San Diego
U.s./canadian manufacturers
11536
Optical Coating Laboratory, Llc
U.s./canadian manufacturers

Freight Information

Air Commodity
AZ -
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Less than Carload Rating
M - 85.0
National Motor Freight Class Rating
M - 85.0
Rail Variation
1
Special Handling
9 - Other or no special handling required (sh)
Type of Cargo
Z - No special type of cargo code applicable
Uniform Freight Classification Item Number
45895
Water Commodity
704 - Glass or glass items
National Motor Freight Classification Item Number
086540

Schedule B & Trade

Schedule B
3926-90-9988
Description
articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
End Use
12770 - Other industrial supplies
Unit of Quantity
NO
USDA
Yes
(SITC) Standard International Trade Classification
89399
(NAICS) North American Industrial Classification System
326199

Questions & Answers

  1. What is the FSCG of the NSN 9330-01-254-2978?

    The FSCG of the NSN 9330-01-254-2978 is 9330

  2. Does the NSN 9330-01-254-2978 have a Schedule B code assigned?

    Yes, the Schedule B code is 3926909988

  3. Does NSN 9330-01-254-2978 require demilitarization?

    Usml items - mutilation to the point of scrap required worldwide. (note 7).

  4. Does NSN 9330-01-254-2978 contain precious materials?

    Item does not contain precious metal.

  5. Does NSN 9330-01-254-2978 contain hazardous materials?

    Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

  6. When the NSN 9330-01-254-2978 was assigned to the Federal Catalog?

    It was assigned 39 years ago, on Tue, May 5, 1987

Globe Transparent
Get in Touch
Looking for technical parts, product details, or custom project planning? Our team has you covered with end-to-end support every step of the way.
Contact Us

Pricing & 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.

Recent Updates

Last Update: 1 day ago
View History