8731 PIECE 4

View detailed technical data, stock status, and sourcing information for: 8731 PIECE 4
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part 8731 PIECE 4 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-178-8686

Item Name Code

22113

Assigment Date

05/10/1984 (42 years ago)

45.000 nominal seat angle in deg, 1.250 inches nominal overall height, 0.750 inches nominal body inside diameter, 3a single threaded portion thread class, 1.000 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: 1.000 inches nominal single threaded portion
Overall Height: 1.250 inches nominal
Body Inside Diameter: 0.750 inches nominal
Seat Angle In Deg: 45.000 nominal
Thread Quantity Per Inch: 18 single threaded portion
Nominal Thread Size: 1.125 inches single threaded portion
Seating Surface Shape: angular
Criticality Code Justification: zzzy
Material: nickel alloy overall
Material Document And Classification: qq-n-281 fed spec single material response overall
Style Designator: plain threaded
Thread Series Designator: unef single threaded portion
Reference Number Differentiating Characteristics: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

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
20212FIND5	Valve Seat
8731 PIECE 4	Valve Seat
A7440.002.128SPCLN	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-178-8686?

The FSCG of the NSN 4820-01-178-8686 is 4820

Does the NSN 4820-01-178-8686 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-178-8686 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 4820-01-178-8686 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-178-8686 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 4820-01-178-8686 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Thu, May 10, 1984