5305-01-189-2797

Find complete technical information, availability, and procurement data for: 5305-01-189-2797
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-189-2797

Item Name Code

33044

Assigment Date

09/14/1984 (41 years ago)

A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.

right-hand thread direction, pan head style, 2a thread class, 0.188 inches minimum and 0.218 inches maximum thread length, 0.271 inches minimum and 0.301 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: 2a
Thread Direction: right-hand
Thread Length: 0.188 inches minimum and 0.218 inches maximum
Fastener Length: 0.271 inches minimum and 0.301 inches maximum
Head Style: pan
Head Diameter: 0.250 inches minimum and 0.280 inches maximum
Head Height: 0.077 inches minimum and 0.107 inches maximum
Material Accommodated Thickness: 0.031 inches minimum and 0.062 inches maximum
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 140000 pounds per square inch
Hardness Rating: 45.0 rockwell c minimum and 53.0 rockwell c maximum primary washer
Part Name Assigned By Controlling Agency: navy special project
Special Features: finish color black
Material Document And Classification: 66 fed std all material responses primary washer
Material Document And Classification: qq-s-763 fed spec single material response stand-off
Surface Treatment: oxide overall
Surface Treatment Document And Classification: mil-c-13924,cl3 mil spec single treatment response 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
C9761	Panel Screw Assembly
DCTLE7900P-6A2	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-189-2797?

The FSCG of the NSN 5305-01-189-2797 is 5305

Does NSN 5305-01-189-2797 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 5305-01-189-2797 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-189-2797 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 5305-01-189-2797 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Fri, Sep 14, 1984