MS51491-059

View detailed technical data, stock status, and sourcing information for: MS51491-059
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-490-0617

Item Name Code

18257

Assigment Date

09/19/2001 (24 years ago)

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends with threads of the same nominal diameter. The maximum diameter of the unthreaded portion must not be greater than the nominal thread diameter plus 0.020 inches (0.508 mm). The unthreaded portion must be without locking or wrenching provisions. It may be thread relieved. See also rod, threaded end and rod, continuous thread.

1.500 inches nominal thread length, 1.500 inches nominal fastener length, hexagon head style, 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: 1.500 inches nominal
Fastener Length: 1.500 inches nominal
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.403 inches maximum
Width Between Flats: 0.922 inches minimum and 0.937 inches maximum
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Minimum Tensile Strength: 271000 pounds per square inch
Material: steel overall
Material Document And Classification: ff-s-85, grade 5 fed spec single material response overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astmb633-78, type ii assn std all treatment responses 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
6510E71FN88	Hexagon Head Cap Screw
MS51491-059	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-490-0617?

The FSCG of the NSN 5305-01-490-0617 is 5305

Does the NSN 5305-01-490-0617 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-490-0617 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 5305-01-490-0617 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-490-0617 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 5305-01-490-0617 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Wed, Sep 19, 2001