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NSN ST4M178A4

Spring Tension Washer

An insulator that is essentially thin, flat, and round in shape, with or without holes. The general shape may vary by the addition of such features as beveled edges, indented surfaces, through-hole key and/or peripheral flats. It may have one or more holes off center; if there are two or more holes, one may be centrally located. Excludes:mounting pad, electrical-electronic component.

unable to decode material document and classification, 0.025 inches nominal material thickness, 2.400 inches nominal hole diameter, 2.860 inches nominal outside diameter, unable to decode material.

NSN 5310-01-030-4920 Datasheet

(NSN) National Stock Number
5310-01-030-4920
(FSG) Federal Supply Group
53 - Hardware and Abrasives
(FSC) Federal Supply Classification
5310 - Nuts and Washers
(NIIN) National Item Identification Number
01-030-4920
Requires Demilitarization
Yes
(INC) Item Name Code
15938
Date
Sun, Nov 7, 1976
Schedule B Code
7415210000
Hole Diameter
2.400 inches nominal
Material Document And Classification
unable to decode
Material Thickness
0.025 inches nominal
Material
unable to decode
Outside Diameter
2.860 inches nominal
Overall Height
0.307 inches nominal
Special Features
one tab,0.200 in. w,on each side of center hole
Style Designator
spring tension
Surface Treatment Document And Classification
unable to decode
Surface Treatment
unable to decode

Identification

Demilitarization Code
A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Precious Metals Indicator
U - Precious metal content is unknown
Hazardous Metals Indicator
N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Pseudo Item Name Code
0015938

Cross Reference

CAGE Codes

76301
The Boeing Company Div Defense
U.s./canadian manufacturers
89295
Tech-Etch Inc Precision Products Div
U.s./canadian manufacturers

Freight Information

Air Commodity
BZ -
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
National Motor Freight Class Rating
W - Rating variable
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
95100
Water Commodity
713 - Metal hardware
National Motor Freight Classification Item Number
194120

Schedule B & Trade

Schedule B
7415-21-0000
Description
copper washers including spring washers not threaded
End Use
12300 - Finished metal shapes
Unit of Quantity
KG
USDA
Yes
(SITC) Standard International Trade Classification
69432
(NAICS) North American Industrial Classification System
332722

Questions & Answers

  1. What is the FSCG of the NSN 5310-01-030-4920?

    The FSCG of the NSN 5310-01-030-4920 is 5310

  2. Does the NSN 5310-01-030-4920 have a Schedule B code assigned?

    Yes, the Schedule B code is 7415210000

  3. Does NSN 5310-01-030-4920 require demilitarization?

    Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

  4. Does NSN 5310-01-030-4920 contain precious materials?

    Precious metal content is unknown

  5. Does NSN 5310-01-030-4920 contain hazardous materials?

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

  6. When the NSN 5310-01-030-4920 was assigned to the Federal Catalog?

    It was assigned 49 years ago, on Sun, Nov 7, 1976

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