5305-01-522-1277

Find complete technical information, availability, and procurement data for: 5305-01-522-1277
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-522-1277

Item Name Code

16282

Assigment Date

07/20/2004 (22 years ago)

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

0.595 inches minimum and 0.625 inches maximum fastener length, right-hand thread direction, flat chamfer head style, 3a thread class, 0.625 inches nominal 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
Thread Direction: right-hand
Thread Length: 0.625 inches nominal
Fastener Length: 0.595 inches minimum and 0.625 inches maximum
Head Style: flat chamfer
Head Diameter: 0.262 inches minimum and 0.270 inches maximum
Head Height: 0.159 inches minimum and 0.164 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.164 inches
Width Across Flats: 0.1406 inches minimum and 0.1426 inches maximum
Thread Quantity Per Inch: 32
Special Features: modified from ms16995-27 by addition of high purity aluminum coating and a fluoropolymer
Material: steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384 overall
Material Document And Classification: astm f593 assn std all material responses overall
Surface Treatment: aluminum overall
Surface Treatment Document And Classification: mil-c-83488 mil spec single treatment response overall
Thread Series Designator: unc

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
7226366-10	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-522-1277?

The FSCG of the NSN 5305-01-522-1277 is 5305

Does the NSN 5305-01-522-1277 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-522-1277 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 5305-01-522-1277 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-522-1277 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 5305-01-522-1277 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Tue, Jul 20, 2004