WC4020-3-9A

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-083-9573

Item Name Code

29294

Assigment Date

10/05/1979 (46 years ago)

A capacitor, whose capacitance value cannot be adjusted or varied, having a chemically formed film as the dielectric. It may be a single unit, or consist of two or more fixed units which cannot be separated.

flat countersunk undercut head style, 0.380 inches minimum and 0.447 inches maximum thread length, right-hand thread direction, 0.952 inches minimum and 0.999 inches maximum fastener length, 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: 0.380 inches minimum and 0.447 inches maximum
Fastener Length: 0.952 inches minimum and 0.999 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.377 inches minimum and 0.381 inches maximum
Head Height: 0.044 inches minimum and 0.046 inches maximum
Grip Diameter: 0.1890 inches minimum and 0.1895 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.190 inches
Grip Length: 0.552 inches minimum and 0.572 inches maximum
Thread Quantity Per Inch: 32
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Special Features: furnished with one o-ring
Material: steel corrosion resisting overall
Material Document And Classification: 23-112,tyb fsc-76301 mfr ref single material response overall
Surface Treatment: passivate overall
Thread Series Designator: unjf

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
HT4020-3-9A	Close Tolerance Screw
ST3M652C3-9A	Close Tolerance Screw
WC4020-3-9A	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-083-9573?

The FSCG of the NSN 5305-01-083-9573 is 5305

Does the NSN 5305-01-083-9573 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-083-9573 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 5305-01-083-9573 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-083-9573 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 5305-01-083-9573 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Fri, Oct 5, 1979