5305-01-412-1939

Find complete technical information, availability, and procurement data for: 5305-01-412-1939
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-412-1939

Item Name Code

29294

Assigment Date

04/13/1995 (31 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

3a thread class, 2.058 inches minimum and 2.078 inches maximum fastener length, flat countersunk head style, right-hand thread direction, 0.501 inches nominal thread 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: 0.501 inches nominal
Fastener Length: 2.058 inches minimum and 2.078 inches maximum
Head Style: flat countersunk
Head Diameter: 0.578 inches minimum and 0.634 inches maximum
Grip Diameter: 0.3110 inches minimum and 0.3120 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.325 inches
Grip Length: 1.552 inches minimum and 1.572 inches maximum
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp 4140 or steel comp 4340 or steel comp 8740 overall
Material Document And Classification: mil-s-5652 mil spec 1st material response or mil-s-5200 mil spec 2nd material response or mil-6049 mil spec 3rd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416, ty2, cl2 fed spec all treatment responses 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
NAS1580A5R25	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-412-1939?

The FSCG of the NSN 5305-01-412-1939 is 5305

Does the NSN 5305-01-412-1939 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-412-1939 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 5305-01-412-1939 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-412-1939 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 5305-01-412-1939 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Thu, Apr 13, 1995