5305-01-438-3775

Find complete technical information, availability, and procurement data for: 5305-01-438-3775
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-438-3775

Item Name Code

29294

Assigment Date

11/06/1996 (29 years ago)

An active semiconductor device with three or more electrodes. May or may not include mounting hardware and/or heatsink. Excludes:semiconductor device, diode and semiconductor device, thyristor. For solid state devices which are responsive to visible or infrared radiant energy, see semiconductor device, photo.

3a thread class, 0.400 inches minimum and 0.450 inches maximum thread length, 0.660 inches minimum and 0.690 inches maximum fastener length, right-hand thread direction, flat countersunk head style

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: 0.400 inches minimum and 0.450 inches maximum
Fastener Length: 0.660 inches minimum and 0.690 inches maximum
Head Style: flat countersunk
Head Diameter: 0.449 inches minimum and 0.507 inches maximum
Locking Feature: patch or pellet or strip threads
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.240 inches minimum and 0.250 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches threads
Part Name Assigned By Controlling Agency: navy special project
Material: plastic locking feature
Material: steel comp 4140 or steel comp 8740 overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416 tii c2 assn std single treatment response overall
Thread Series Designator: unjf

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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
NAS1164-4	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-438-3775?

The FSCG of the NSN 5305-01-438-3775 is 5305

Does the NSN 5305-01-438-3775 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-438-3775 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 5305-01-438-3775 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-438-3775 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 5305-01-438-3775 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Wed, Nov 6, 1996