1 - 8UNRC - 3A X 2 3/4

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-429-5654

Item Name Code

16282

Assigment Date

04/13/1996 (30 years ago)

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also valve (1), lift-check and valve (1), stop-lift-check.

2.750 inches maximum fastener length, 3a thread class, valve shear end item identification, 8 thread quantity per inch, 1.000 inches nominal thread diameter

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
Fastener Length: 2.750 inches maximum
End Item Identification: valve shear
Nominal Thread Diameter: 1.000 inches
Thread Quantity Per Inch: 8
Criticality Code Justification: zzzx
Special Features: screw, cap, socket head, self locking (requested name)
Material: nickel alloy overall
Material Document And Classification: qq-n-286 gr 500 fed spec single material response overall
Thread Series Designator: unrc
Departure From Cited Designator: material controlled iaw navsea 0948-lp-045-7010 material control standard for level i items

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
1 - 8UNRC - 3A X 2 3/4	Socket Head Cap Screw
1 - 8UNRC - 3A X 2 3/4L1	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-429-5654?

The FSCG of the NSN 5305-01-429-5654 is 5305

Does the NSN 5305-01-429-5654 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-429-5654 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 5305-01-429-5654 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-429-5654 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 5305-01-429-5654 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Sat, Apr 13, 1996