5305-01-321-8734

Find complete technical information, availability, and procurement data for: 5305-01-321-8734
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-321-8734

Item Name Code

16282

Assigment Date

06/25/1990 (36 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.

flat countersunk head style, right-hand thread direction, 3a thread class, 0.558 inches minimum and 0.578 inches maximum fastener length, 0.488 inches minimum 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: 3a
Thread Direction: right-hand
Thread Length: 0.488 inches minimum
Fastener Length: 0.558 inches minimum and 0.578 inches maximum
Head Style: flat countersunk
Head Diameter: 0.531 inches nominal
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.156 inches minimum and 0.158 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 43.0 rockwell c maximum overall
Minimum Yield Strength: 130000 pounds per square inch
Countersink Angle: 80.0 degrees minimum and 84.0 degrees maximum
Material: steel overall
Material Document And Classification: 66 fed std single material response overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: dod-p-16232 ty m,cl 3 mil spec single treatment response overall
Thread Series Designator: unrf

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
6298012-1	Socket Head Cap Screw
629815-35	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-321-8734?

The FSCG of the NSN 5305-01-321-8734 is 5305

Does the NSN 5305-01-321-8734 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-321-8734 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 5305-01-321-8734 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-321-8734 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 5305-01-321-8734 was assigned to the Federal Catalog?

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