5305-00-490-1839

Find complete technical information, availability, and procurement data for: 5305-00-490-1839
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-490-1839

Item Name Code

18257

Assigment Date

10/01/1969 (56 years ago)

1.938 inches minimum and 2.000 inches maximum fastener length, right-hand thread direction, 1.727 inches minimum thread length, hexagon head style, 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: 1.727 inches minimum
Fastener Length: 1.938 inches minimum and 2.000 inches maximum
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.403 inches maximum
Width Between Flats: 0.922 inches minimum and 0.938 inches maximum
Hole Diameter: 0.094 inches nominal
Nominal Thread Diameter: 0.625 inches
Hole Quantity: 1
Hole Type: drilled
Thread Quantity Per Inch: 11
Minimum Tensile Strength: 120000 pounds per square inch
Hardness Rating: 25.0 rockwell c minimum and 34.0 rockwell c maximum overall
Hole Configuration Style: hexagon flats
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: sae gr 5 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty2 cl3 fed spec single treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 2 type and 10p style and 5 grade
Departure From Cited Designator: as modified by drilled hole in head

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
MS51095-439	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-490-1839?

The FSCG of the NSN 5305-00-490-1839 is 5305

Does the NSN 5305-00-490-1839 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-490-1839 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 5305-00-490-1839 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-490-1839 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 5305-00-490-1839 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Oct 1, 1969