5305-01-266-9191

Find complete technical information, availability, and procurement data for: 5305-01-266-9191
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-266-9191

Item Name Code

06657

Assigment Date

11/03/1987 (38 years ago)

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

0.500 inches nominal fastener length, right-hand thread direction, 2a thread class, oval countersunk undercut head style, 0.438 inches minimum and 0.500 inches maximum 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: 0.438 inches minimum and 0.500 inches maximum
Fastener Length: 0.500 inches nominal
Head Style: oval countersunk undercut
Head Diameter: 0.292 inches minimum and 0.332 inches maximum
Head Height: 0.101 inches minimum and 0.123 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Screw Material: steel comp 301 or steel comp 302 or steel comp 302b or steel comp 303 or steel comp 303se or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309s or steel comp 310 or steel comp 310s or steel comp 314 or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 or steel comp 347 or steel comp 348 or steel comp 384 or steel comp 385
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
23266ADX	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-266-9191?

The FSCG of the NSN 5305-01-266-9191 is 5305

Does the NSN 5305-01-266-9191 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-266-9191 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 5305-01-266-9191 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-266-9191 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 5305-01-266-9191 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Tue, Nov 3, 1987