5305-00-921-0050

Find complete technical information, availability, and procurement data for: 5305-00-921-0050
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-921-0050

Item Name Code

06657

Assigment Date

12/17/1965 (60 years ago)

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.

2a thread class, 0.250 inches nominal fastener length, 0.250 inches maximum thread length, right-hand thread direction, pan head style

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: 0.250 inches maximum
Fastener Length: 0.250 inches nominal
Head Style: pan
Head Diameter: 0.256 inches minimum and 0.270 inches maximum
Head Height: 0.087 inches minimum and 0.097 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 140000 pounds per square inch
Screw Material: iron alloy 660
Screw Material Document And Classification: ams5732 assn std single material response
Screw Surface Treatment: passivate
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
LS5959C06-4	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-921-0050?

The FSCG of the NSN 5305-00-921-0050 is 5305

Does the NSN 5305-00-921-0050 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-921-0050 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 5305-00-921-0050 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-921-0050 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 5305-00-921-0050 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Dec 17, 1965