709-8345733-046-002C

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-598-7540

Item Name Code

18257

Assigment Date

08/25/2011 (14 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

right-hand thread direction, 1.625 inches nominal fastener length, 2a thread class, flat fillister head style, 0.750 inches nominal thread 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
Thread Length: 0.750 inches nominal
Fastener Length: 1.625 inches nominal
Head Style: flat fillister
Head Diameter: 0.365 inches minimum and 0.375 inches maximum
Key Length: 0.120 inches minimum
Head Height: 0.244 inches minimum and 0.250 inches maximum
End Item Identification: shell assy, t,for dry deck shelter fc-156 portable track assembly and details
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Part Name Assigned By Controlling Agency: screw, machine, hex head
Material: aluminum and nickel 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
0.250-20UNC-2AX1.625 NICU	Hexagon Head Cap Screw
709-8345733-046-002C	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-598-7540?

The FSCG of the NSN 5305-01-598-7540 is 5305

Does NSN 5305-01-598-7540 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 5305-01-598-7540 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-598-7540 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 5305-01-598-7540 was assigned to the Federal Catalog?

It was assigned 14 years ago, on Thu, Aug 25, 2011