5305-01-439-2891

Find complete technical information, availability, and procurement data for: 5305-01-439-2891
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-439-2891

Item Name Code

06657

Assigment Date

12/04/1996 (29 years ago)

A device which, when inserted into the bore of a valve guide on an internal combustion engine, serves as a center post for aligning and guiding the grinding stone and/or reamer of a valve seat refacer.

10.9 millimeters minimum and 12.6 millimeters maximum head diameter, 12.0 millimeters maximum thread length, 13.0 millimeters nominal fastener length, flat countersunk head style, right-hand thread direction

Product Characteristics

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

Thread Direction: right-hand
Thread Length: 12.0 millimeters maximum
Fastener Length: 13.0 millimeters nominal
Head Style: flat countersunk
Head Diameter: 10.9 millimeters minimum and 12.6 millimeters maximum
Head Height: 3.3 millimeters maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 6.0 millimeters
Thread Pitch In Millimeters: 1.0
External Thread Tolerance Class: 6g
Countersink Angle: 90.0 degrees nominal
Screw Material: steel property class 9.8
Screw Surface Treatment: zinc
Screw Surface Treatment Document And Classification: astmb633,fe/zn,ty2 assn std single treatment response
Thread Series Designator: m

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
B1867BA060130	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-439-2891?

The FSCG of the NSN 5305-01-439-2891 is 5305

Does the NSN 5305-01-439-2891 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-439-2891 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 5305-01-439-2891 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-439-2891 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 5305-01-439-2891 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Wed, Dec 4, 1996