5305-01-266-8350

Find complete technical information, availability, and procurement data for: 5305-01-266-8350
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-266-8350

Item Name Code

16282

Assigment Date

10/31/1987 (38 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

right-hand thread direction, 0.408 inches minimum and 0.438 inches maximum fastener length, flat countersunk head style, 0.336 inches minimum and 0.409 inches maximum 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: 0.336 inches minimum and 0.409 inches maximum
Fastener Length: 0.408 inches minimum and 0.438 inches maximum
Head Style: flat countersunk
Head Diameter: 0.143 inches minimum and 0.172 inches maximum
Locking Feature: patch threads
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.086 inches
Thread Quantity Per Inch: 56
Minimum Tensile Strength: 80000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Special Features: locking element shall begin no more than two and one half threads from screw end
Material: plastic locking feature
Material: steel comp 321 or steel comp 302 or steel comp 303 or steel comp 347 fastener
Material Document And Classification: mil-f-18240 mil spec single material response locking feature
Surface Treatment: passivate fastener
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response fastener
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
704AS9843-4	Socket Head Cap Screw
899843-4	Socket Head Cap Screw
S20620-4	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-266-8350?

The FSCG of the NSN 5305-01-266-8350 is 5305

Does the NSN 5305-01-266-8350 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-266-8350 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 5305-01-266-8350 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-266-8350 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 5305-01-266-8350 was assigned to the Federal Catalog?

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