233959

View detailed technical data, stock status, and sourcing information for: 233959
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-298-3043

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

0.822 inches maximum thread length, 0.802 inches minimum and 0.822 inches maximum fastener length, 2a thread class, flat countersunk head style, right-hand thread direction

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: 0.822 inches maximum
Fastener Length: 0.802 inches minimum and 0.822 inches maximum
Head Style: flat countersunk
Head Diameter: 0.491 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
Hardness Rating: 30.0 rockwell c minimum and 38.0 rockwell c maximum
Countersink Angle: 100.0 degrees nominal
Screw Material: steel corrosion resisting
Screw Material Document And Classification: ams 5616 assn std single material response
Thread Series Designator: unf

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
233959	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-298-3043?

The FSCG of the NSN 5305-00-298-3043 is 5305

Does the NSN 5305-00-298-3043 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-298-3043 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 5305-00-298-3043 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-298-3043 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 5305-00-298-3043 was assigned to the Federal Catalog?

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