5305-00-057-1027

Find complete technical information, availability, and procurement data for: 5305-00-057-1027
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-057-1027

Item Name Code

18257

Assigment Date

01/01/1960 (66 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

0.875 inches maximum thread length, hexagon head style, 0.875 inches nominal fastener length, right-hand thread direction, 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: 0.875 inches maximum
Fastener Length: 0.875 inches nominal
Head Style: hexagon
Head Height: 0.313 inches nominal
Width Between Flats: 0.750 inches nominal
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Material: steel overall
Surface Treatment: phosphate overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 2 type and 10p style

FAQs

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

What is the FSCG of the NSN 5305-00-057-1027?

The FSCG of the NSN 5305-00-057-1027 is 5305

Does the NSN 5305-00-057-1027 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-057-1027 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 5305-00-057-1027 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-057-1027 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 5305-00-057-1027 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960