5305-01-266-8341

Find complete technical information, availability, and procurement data for: 5305-01-266-8341
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-266-8341

Item Name Code

06660

Assigment Date

10/31/1987 (38 years ago)

An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.

right-hand thread direction, 0.343 inches minimum and 0.375 inches maximum fastener length, pan head style, 0.264 inches minimum thread length, 2a thread class

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: 0.264 inches minimum
Fastener Length: 0.343 inches minimum and 0.375 inches maximum
Head Style: pan
Head Diameter: 0.306 inches minimum and 0.322 inches maximum
Head Height: 0.105 inches minimum and 0.115 inches maximum
Washer Quantity: 2
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Secondary Washer Relationship To Primary Washer: not identical
Secondary Washer Style: flat
Primary Washer Outside Diameter: 0.293 inches maximum
Secondary Washer Outside Diameter: 0.307 inches minimum and 0.317 inches maximum
Primary Washer Style: split helical ring
Primary Washer Material Thickness: 0.040 inches minimum
Secondary Washer Material Thickness: 0.013 inches minimum and 0.019 inches maximum
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 primary washer
Material: steel comp 302 or steel comp 304 fastener
Material: steel comp 302 or steel comp 304 secondary washer
Material Document And Classification: 66 fed std all material responses primary washer
Material Document And Classification: mil-s-5059 mil spec all material responses secondary washer
Material Document And Classification: qq-s-763 fed spec all material responses fastener
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unc
Specification/Standard Data: 80205-nas1301 professional/industrial association standard

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
NAS1301C8-6	Assembled Washer Screw

FAQs

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

What is the FSCG of the NSN 5305-01-266-8341?

The FSCG of the NSN 5305-01-266-8341 is 5305

Does the NSN 5305-01-266-8341 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-266-8341 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 5305-01-266-8341 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-266-8341 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 5305-01-266-8341 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Oct 31, 1987