MH105 FIND NO.4

View detailed technical data, stock status, and sourcing information for: MH105 FIND NO.4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-502-6865

Item Name Code

22113

Assigment Date

11/18/2002 (23 years ago)

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

2a first threaded portion thread class, 2a second threaded portion thread class, 0.380 inches nominal second threaded portion thread length, 0.062 inches nominal first threaded portion thread length, 1.250 inches nominal overall height

Product Characteristics

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

Thread Class: 2a first threaded portion
Thread Class: 2a second threaded portion
Thread Length: 0.062 inches nominal first threaded portion
Thread Length: 0.380 inches nominal second threaded portion
Overall Height: 1.250 inches nominal
Taper Minor Diameter: 0.435 inches nominal
Taper Major Diameter: 0.570 inches nominal
Body Inside Diameter: 0.435 inches minimum and 0.750 inches maximum
End Item Identification: 1/2 inch relief valve type 1771-t
Seat Radius: 0.217 inches nominal
Seat Angle In Deg: 30.000 minimum and 60.000 maximum
Thread Quantity Per Inch: 16 first threaded portion
Nominal Thread Size: 0.687 inches first threaded portion
Nominal Thread Size: 1.125 inches second threaded portion
Seating Surface Shape: angular
Material: steel comp 316 seat
Material Document And Classification: astm a479 ty 316 assn std single material response seat
Style Designator: double flanged
Thread Series Designator: un first threaded portion
Thread Series Designator: unef second threaded portion
Reference Number Differentiating Characteristics: asdifferentiated by: part requires special material control and quality assurance, which support the non-magnetic signature of minesweepers.

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
B14532.001.102VM	Valve Seat
MH105 FIND NO.4	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-502-6865?

The FSCG of the NSN 4820-01-502-6865 is 4820

Does the NSN 4820-01-502-6865 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-502-6865 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.

Does NSN 4820-01-502-6865 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-502-6865 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 4820-01-502-6865 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Mon, Nov 18, 2002