5305-00-947-4159

Find complete technical information, availability, and procurement data for: 5305-00-947-4159
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-947-4159

Item Name Code

18257

Assigment Date

03/30/1966 (60 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

right-hand thread direction, hexagon head style, 0.220 inches minimum thread length, 1a thread class, 0.270 inches minimum and 0.290 inches maximum 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: 1a
Thread Direction: right-hand
Thread Length: 0.220 inches minimum
Fastener Length: 0.270 inches minimum and 0.290 inches maximum
Head Style: hexagon
Head Height: 0.130 inches minimum and 0.150 inches maximum
Width Between Flats: 0.616 inches minimum and 0.627 inches maximum
Nominal Thread Diameter: 0.438 inches
Thread Quantity Per Inch: 20
Material: iron alloy 660 overall
Precious Material: silver
Surface Treatment: silver overall
Surface Treatment Document And Classification: ams 2410 assn std single treatment response overall
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
534058CL1	Hexagon Head Cap Screw
534058CLASS1	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-947-4159?

The FSCG of the NSN 5305-00-947-4159 is 5305

Does the NSN 5305-00-947-4159 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-947-4159 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 5305-00-947-4159 contain precious materials?

Item contains silver.

Does NSN 5305-00-947-4159 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 5305-00-947-4159 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Wed, Mar 30, 1966