5305-01-144-6263

Find complete technical information, availability, and procurement data for: 5305-01-144-6263
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-144-6263

Item Name Code

06660

Assigment Date

12/27/1982 (43 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.

2a thread class, right-hand thread direction, 0.219 inches minimum and 0.312 inches maximum thread length, 0.281 inches minimum and 0.312 inches maximum fastener length, round head style

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: 0.219 inches minimum and 0.312 inches maximum
Fastener Length: 0.281 inches minimum and 0.312 inches maximum
Head Style: round
Head Diameter: 0.240 inches minimum and 0.260 inches maximum
Head Height: 0.091 inches minimum and 0.103 inches maximum
Washer Quantity: 1
Internal Drive Style: slot
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Hardness Rating: 40.0 rockwell c minimum and 50.0 rockwell c maximum overall
Primary Washer Outside Diameter: 0.270 inches minimum and 0.280 inches maximum
Primary Washer Style: flat external teeth
Primary Washer Material Thickness: 0.016 inches nominal
Material Document And Classification: sae assn std all material responses overall
Surface Treatment: cadmium or zinc 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
228292	Assembled Washer Screw

FAQs

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

What is the FSCG of the NSN 5305-01-144-6263?

The FSCG of the NSN 5305-01-144-6263 is 5305

Does NSN 5305-01-144-6263 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 5305-01-144-6263 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-144-6263 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 5305-01-144-6263 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Mon, Dec 27, 1982