155995

View detailed technical data, stock status, and sourcing information for: 155995
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-721-4605

Item Name Code

22846

Assigment Date

01/01/1963 (63 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, 0.109 inches minimum thread length, 0.454 inches nominal fastener length, flat chamfer head style, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.109 inches minimum
Fastener Length: 0.454 inches nominal
Head Style: flat chamfer
Head Diameter: 0.375 inches nominal
Head Height: 0.062 inches nominal
Shoulder Diameter: 0.230 inches nominal first shoulder
Shoulder Length: 0.272 inches nominal first shoulder
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Features Provided: casehardened
Thread Quantity Per Inch: 40
Shoulder Shape: round first shoulder
Material: steel overall
Surface Treatment: nickel overall
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-652-1598	No Name Available	01/01/1960

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
155995	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-00-721-4605?

The FSCG of the NSN 5305-00-721-4605 is 5305

Does the NSN 5305-00-721-4605 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-721-4605 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 5305-00-721-4605 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-721-4605 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 5305-00-721-4605 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963