5305-01-571-7799

Find complete technical information, availability, and procurement data for: 5305-01-571-7799
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-571-7799

Item Name Code

06657

Assigment Date

02/18/2009 (17 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.

0.0875 inches nominal fastener length, right-hand thread direction, 2a thread class, pan head style, 0.875 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: 2a
Thread Direction: right-hand
Thread Length: 0.875 inches nominal
Fastener Length: 0.0875 inches nominal
Head Style: pan
Head Diameter: 0.473 inches minimum and 0.492 inches maximum
Head Height: 0.162 inches minimum and 0.750 inches maximum
Internal Drive Style: cross recess type 1
End Item Identification: mrap - unique nsn - rg33 cat i
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 60000 pounds per square inch
Part Name Assigned By Controlling Agency: screw,machine
Screw Material: steel comp 1010
Screw Material Document And Classification: 66 fed std all material responses
Screw Surface Treatment: zinc
Screw Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 3 type

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
MS35206-282Z	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-571-7799?

The FSCG of the NSN 5305-01-571-7799 is 5305

Does the NSN 5305-01-571-7799 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5305-01-571-7799 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 5305-01-571-7799 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-571-7799 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 5305-01-571-7799 was assigned to the Federal Catalog?

It was assigned 17 years ago, on Wed, Feb 18, 2009