5305-00-251-8263

Find complete technical information, availability, and procurement data for: 5305-00-251-8263
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-251-8263

Item Name Code

06657

Assigment Date

07/25/1969 (57 years ago)

flat countersunk head style, right-hand thread direction, 3a thread class, 0.305 inches minimum and 0.350 inches maximum thread length, 0.385 inches minimum and 0.430 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: 3a
Thread Direction: right-hand
Thread Length: 0.305 inches minimum and 0.350 inches maximum
Fastener Length: 0.385 inches minimum and 0.430 inches maximum
Head Style: flat countersunk
Head Diameter: 0.337 inches minimum and 0.387 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 85000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp 304 or steel comp 321 or steel comp 347
Screw Material Document And Classification: qq-s-763,cond a fed spec 1st material response or qq-s-763 fed spec 2nd material response or qq-s-763,cond a fed spec 3rd material response
Screw Surface Treatment: passivate
Screw Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Thread Series Designator: unf

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
NAS560CK3-00	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-251-8263?

The FSCG of the NSN 5305-00-251-8263 is 5305

Does the NSN 5305-00-251-8263 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-251-8263 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 5305-00-251-8263 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-251-8263 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 5305-00-251-8263 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Jul 25, 1969