5305-00-271-7634

Find complete technical information, availability, and procurement data for: 5305-00-271-7634
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-271-7634

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

0.876 inches minimum and 0.938 inches maximum thread length, flat countersunk head style, right-hand thread direction, 2a thread class, 0.906 inches minimum and 0.938 inches maximum fastener 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: 0.876 inches minimum and 0.938 inches maximum
Fastener Length: 0.906 inches minimum and 0.938 inches maximum
Head Style: flat countersunk
Head Diameter: 0.300 inches minimum and 0.332 inches maximum
Internal Drive Style: cross recess type 1
End Item Identification: spec item
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 55000 pounds per square inch
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Screw Material: steel or steel comp 1010
Screw Material Document And Classification: qq-s-630 fed spec 2nd material response or qq-s-631 fed spec 2nd material response or qq-s-634 fed spec 2nd material response
Screw Surface Treatment: cadmium
Screw Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-271-3960	No Name Available	01/01/1963

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
AN505-8-15	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-271-7634?

The FSCG of the NSN 5305-00-271-7634 is 5305

Does the NSN 5305-00-271-7634 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-271-7634 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 5305-00-271-7634 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-271-7634 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 5305-00-271-7634 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963