5305-01-274-0909

Find complete technical information, availability, and procurement data for: 5305-01-274-0909
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-274-0909

Item Name Code

16282

Assigment Date

03/04/1988 (38 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.

flat chamfer head style, right-hand thread direction, 3a thread class, 0.110 inches minimum and 0.204 inches maximum thread length, 0.172 inches minimum and 0.204 inches maximum 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: 3a
Thread Direction: right-hand
Thread Length: 0.110 inches minimum and 0.204 inches maximum
Fastener Length: 0.172 inches minimum and 0.204 inches maximum
Head Style: flat chamfer
Head Diameter: 0.262 inches minimum and 0.270 inches maximum
Head Height: 0.159 inches minimum and 0.164 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.164 inches
Width Across Flats: 0.140 inches minimum and 0.142 inches maximum
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 80000 pounds per square inch
Hardness Rating: 80.0 rockwell c minimum overall
Minimum Yield Strength: 30000 pounds per square inch
Part Name Assigned By Controlling Agency: navy special project
Special Features: knurled head optional
Material: steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 overall
Material Document And Classification: 66 assn std all material responses overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-01-173-3551	No Name Available	11/01/1991

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
20098-98C-3	Socket Head Cap Screw
416863-803	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-274-0909?

The FSCG of the NSN 5305-01-274-0909 is 5305

Does the NSN 5305-01-274-0909 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-274-0909 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 5305-01-274-0909 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-274-0909 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 5305-01-274-0909 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Mar 4, 1988