5305-01-598-8430

Find complete technical information, availability, and procurement data for: 5305-01-598-8430
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-598-8430

Item Name Code

06657

Assigment Date

08/30/2011 (14 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

roof head style, right-hand thread direction, 2a thread class, 0.473 inches minimum and 0.492 inches maximum head diameter, 1.000 inches nominal 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: 2a
Thread Direction: right-hand
Fastener Length: 1.000 inches nominal
Head Style: roof
Head Diameter: 0.473 inches minimum and 0.492 inches maximum
Head Height: 0.162 inches minimum and 0.175 inches maximum
Internal Drive Style: cross recess type iii
End Item Identification: mrap; rg-33
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 2540 pounds per square inch
Part Name Assigned By Controlling Agency: screw, machine, pan head, cross-recessed, corrosion resistant steel, unc-2a
Screw Material: steel comp 316 and steel comp 316l
Bearing Surface Of Head Surface Treatment: passivate
Head Surface Treatment: passivate
Screw Surface Treatment: passivate
Shank Surface Treatment: passivate
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
MS51957-83S316	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-598-8430?

The FSCG of the NSN 5305-01-598-8430 is 5305

Does the NSN 5305-01-598-8430 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-598-8430 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 5305-01-598-8430 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-598-8430 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 5305-01-598-8430 was assigned to the Federal Catalog?

It was assigned 14 years ago, on Tue, Aug 30, 2011