5305-01-283-6666

Find complete technical information, availability, and procurement data for: 5305-01-283-6666
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-283-6666

Item Name Code

33044

Assigment Date

08/10/1988 (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.

0.339 inches minimum and 0.379 inches maximum fastener length, knurled no. 1 head style, 0.451 inches nominal head diameter, 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
Fastener Length: 0.339 inches minimum and 0.379 inches maximum
Head Style: knurled no. 1
Head Diameter: 0.451 inches nominal
Head Height: 0.290 inches nominal
Internal Drive Style: slot
Material Accommodated Thickness: 0.031 inches minimum and 0.062 inches maximum
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp 302 secondary washer
Material: steel comp 302 primary washer
Material: steel comp 302 spring
Material: steel comp 303 or steel comp 303ma or steel comp 303pb or steel comp 303 plus x or steel comp 303se or steel comp 301 or steel comp 302 or steel comp 302b or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309s or steel comp 310 or steel comp 310s or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 stand-off
Material: steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 321 or steel comp 347 or steel comp 384 or steel comp 385 fastener
Material Document And Classification: astm a313 assn std single material response spring
Material Document And Classification: astm a493 assn std all material responses fastener
Material Document And Classification: mil-s-5059 mil spec single material response primary washer
Material Document And Classification: mil-s-5059 mil spec single material response secondary washer
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unf

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
720286-109	Panel Screw Assembly
DF7500-10-A-1	Panel Screw Assembly
DF7500-10A1	Panel Screw Assembly
FT1700-10-1-1	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-283-6666?

The FSCG of the NSN 5305-01-283-6666 is 5305

Does the NSN 5305-01-283-6666 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-283-6666 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 5305-01-283-6666 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-283-6666 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 5305-01-283-6666 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Wed, Aug 10, 1988