5305-01-321-8797

Find complete technical information, availability, and procurement data for: 5305-01-321-8797
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-321-8797

Item Name Code

06657

Assigment Date

06/25/1990 (36 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

flat countersunk head style, right-hand thread direction, 0.538 inches minimum and 0.640 inches maximum thread length, 0.719 inches minimum and 0.750 inches maximum fastener 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: 0.538 inches minimum and 0.640 inches maximum
Fastener Length: 0.719 inches minimum and 0.750 inches maximum
Head Style: flat countersunk
Head Diameter: 0.442 inches minimum and 0.507 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 62000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: aluminum alloy 2024
Screw Material Document And Classification: qq-a-225/6 fed spec single material response
Screw Surface Treatment: anodize
Screw Surface Treatment Document And Classification: mil-a-8625 ty 1 or ty 2 cl1 mil spec single treatment response
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 3 type and 3c style

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
MS24693A296	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-321-8797?

The FSCG of the NSN 5305-01-321-8797 is 5305

Does the NSN 5305-01-321-8797 have a Schedule B code assigned?

Yes, the Schedule B code is 7616106000

Does NSN 5305-01-321-8797 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 5305-01-321-8797 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-321-8797 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 5305-01-321-8797 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Mon, Jun 25, 1990