5305-01-342-8581

Find complete technical information, availability, and procurement data for: 5305-01-342-8581
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-342-8581

Item Name Code

29294

Assigment Date

07/31/1991 (34 years ago)

An insulator having flat surfaces, with or without holes, whose thickness exceeds 25 percent of its length or width, whichever is smaller, and whose shape is other than round. It is used to support and/or separate electrical conductors and components. Excludes:insulator (1), standoff; insulator (1), plate; and insulator (1), spreader.

flat countersunk head style, 0.425 inches nominal thread length, right-hand thread direction, 3a thread class, 1.035 inches minimum and 1.065 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: 0.425 inches nominal
Fastener Length: 1.035 inches minimum and 1.065 inches maximum
Head Style: flat countersunk
Head Diameter: 0.3898 inches minimum and 0.3908 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Shank Unthreaded Hole Diameter: 0.076 inches minimum and 0.086 inches maximum first hole
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.615 inches minimum and 0.635 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Distance From Head Largest Bearing Surface To Shank Hole Center: 0.872 inches nominal first hole
Material: steel comp 4130 overall
Material Document And Classification: mil-s-6758 mil spec single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl3 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
7539-4-10	Close Tolerance Screw
7S39-4-10	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-342-8581?

The FSCG of the NSN 5305-01-342-8581 is 5305

Does the NSN 5305-01-342-8581 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-342-8581 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 5305-01-342-8581 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-342-8581 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 5305-01-342-8581 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Wed, Jul 31, 1991