2643-1002-63 FN A6

View detailed technical data, stock status, and sourcing information for: 2643-1002-63 FN A6
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-442-0439

Item Name Code

22113

Assigment Date

03/03/1997 (29 years ago)

A standoff that must have a threaded end(s) or be internally threaded its full length. For items having external threads on both ends, see stud (as modified). For items with an outside contour that is the same for the entire length, are flat on top and bottom, having internal threads its full length, and the length does not exceed twice the width across the flats or outside diameter, see nut (as modified); use maximum dimensions(s) for compliance.

5.140 inches nominal body outside diameter, 4.625 inches nominal body inside diameter, 3a single threaded portion thread class, 1.375 inches nominal overall height, 0.752 inches nominal single threaded portion thread length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a single threaded portion
Thread Length: 0.752 inches nominal single threaded portion
Overall Height: 1.375 inches nominal
Body Outside Diameter: 5.140 inches nominal
Body Inside Diameter: 4.625 inches nominal
End Item Identification: seawolf class ssn
Thread Quantity Per Inch: 12 single threaded portion
Hardness Rating: 115.0 rockwell r nominal seat
Nominal Thread Size: 5.250 inches single threaded portion
Seating Surface Shape: flat
Special Features: a/k/a seat, lower
Material: plastic polytetrafluoroethylene seat
Style Designator: plain
Thread Series Designator: un single threaded portion

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
218020209	Valve Seat
2643-1002-63 FN A6	Valve Seat
801-6556655 FIND A6	Valve Seat
801-6556655-A6	Valve Seat

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-01-442-0439?

The FSCG of the NSN 4820-01-442-0439 is 4820

Does the NSN 4820-01-442-0439 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-442-0439 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-442-0439 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-442-0439 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.

When the NSN 4820-01-442-0439 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Mon, Mar 3, 1997