5305-01-678-8339

Find complete technical information, availability, and procurement data for: 5305-01-678-8339
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-678-8339

Item Name Code

18257

Assigment Date

02/28/2019 (7 years ago)

A switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes:baroswitch; switch,pressure-thermostatic; and switch,sensitive.

0.719 inches minimum and 0.750 inches maximum fastener length, right-hand thread direction, 2a thread class, 0.613 inches minimum and 0.644 inches maximum thread length, hexagon 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: 0.613 inches minimum and 0.644 inches maximum
Fastener Length: 0.719 inches minimum and 0.750 inches maximum
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
End Item Identification: 5420-01-545-7365
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 33.0 rockwell c minimum and 39.0 rockwell c maximum overall
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: saej429 grade bd assn std single material response overall
Surface Treatment: aluminum and zinc overall
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single treatment response 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
AES01F250750AW9M31	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-678-8339?

The FSCG of the NSN 5305-01-678-8339 is 5305

Does the NSN 5305-01-678-8339 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-678-8339 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 5305-01-678-8339 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-678-8339 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 5305-01-678-8339 was assigned to the Federal Catalog?

It was assigned 7 years ago, on Thu, Feb 28, 2019