NSN 4C2856-1

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

spring disk loading method, unable to decode connection style, poppet flow control device, unable to decode connection type, unable to decode material.

NSN 4820-01-021-8371 Datasheet

(NSN) National Stock Number

4820-01-021-8371

(FSG) Federal Supply Group

48 - Valves

(FSC) Federal Supply Classification

4820 - Nonpowered Valves

(NIIN) National Item Identification Number

01-021-8371

Requires Demilitarization

Yes

(INC) Item Name Code

05487

Date

Fri, May 21, 1976

Schedule B Code

8481302090

Connection Style

unable to decode

Connection Type

unable to decode

Disk Loading Method

spring

Flow Control Device

poppet

Material

unable to decode

Mounting Position

horizontal

Nominal Outside Diameter Tube Accommodated

unable to decode

Seat Angle

unable to decode

Style Designator

straight thru

Surface Treatment

passivate

Thread Class

unable to decode

Thread Direction

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

A - Item does not contain precious metal.

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

0005487

Cross Reference

CAGE Codes

99240

Crissair Inc Div Esco Technologies

U.s./canadian manufacturers

77272

The Boeing Company

U.s./canadian manufacturers

Freight Information

Air Commodity

VZ -

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

29300

Water Commodity

594 - Pumps and parts, (machinery and parts),(less than 35 feet)

National Motor Freight Classification Item Number

051080

Schedule B & Trade

Schedule B

8481-30-2090

Description

check valves of steel

End Use

21180 - Industrial machines, other

Unit of Quantity

NO

USDA

Yes

(SITC) Standard International Trade Classification

74730

(NAICS) North American Industrial Classification System

332911

Questions & Answers

1. What is the FSCG of the NSN 4820-01-021-8371?

   The FSCG of the NSN 4820-01-021-8371 is 4820

2. Does the NSN 4820-01-021-8371 have a Schedule B code assigned?

   Yes, the Schedule B code is 8481302090

3. Does NSN 4820-01-021-8371 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 4820-01-021-8371 contain precious materials?

   Item does not contain precious metal.

5. Does NSN 4820-01-021-8371 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 4820-01-021-8371 was assigned to the Federal Catalog?

   It was assigned 50 years ago, on Fri, May 21, 1976