5305-00-291-9988

Find complete technical information, availability, and procurement data for: 5305-00-291-9988
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-291-9988

Item Name Code

16282

Assigment Date

01/01/1963 (63 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.

3a thread class, flat countersunk head style, right-hand thread direction, 0.438 inches minimum thread length, 0.781 inches nominal fastener 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: 0.438 inches minimum
Fastener Length: 0.781 inches nominal
Head Style: flat countersunk
Head Diameter: 0.319 inches minimum and 0.332 inches maximum
Locking Feature: patch or strip threads
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Countersink Angle: 100.0 degrees nominal
Material: plastic locking feature
Material: steel comp 8630 or steel comp 4037 fastener
Material Document And Classification: mil-s-6050 mil spec 1st material response or mil-s-8695 mil spec 2nd material response fastener
Surface Treatment: cadmium overall
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
NK509-8R12	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-291-9988?

The FSCG of the NSN 5305-00-291-9988 is 5305

Does the NSN 5305-00-291-9988 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-291-9988 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 5305-00-291-9988 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-291-9988 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 5305-00-291-9988 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963