5305-01-389-4197

Find complete technical information, availability, and procurement data for: 5305-01-389-4197
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-389-4197

Item Name Code

16282

Assigment Date

04/24/1994 (32 years ago)

A tube fitting with external threads other than pipe or hose series having an internal or external seating surface. The seating surface is designed to form a seal when mated with other tube fittings to retain fluids under pressure during equipment operation. For items without a specific seating surface which are designed to utilize a gasket or packing under the head for forming a seal, see plug, machine thread.

3.860 inches minimum and 4.000 inches maximum fastener length, 3a thread class, right-hand thread direction, 3.125 inches minimum thread length, flat chamfer 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: 3.125 inches minimum
Fastener Length: 3.860 inches minimum and 4.000 inches maximum
Head Style: flat chamfer
Head Diameter: 1.852 inches minimum and 1.875 inches maximum
Head Height: 1.236 inches minimum and 1.250 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 1.250 inches
Width Across Flats: 0.875 inches minimum and 0.885 inches maximum
Thread Quantity Per Inch: 7
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 33.0 rockwell c minimum and 42.0 rockwell c maximum overall
Material: iron alloy 660 overall
Material Document And Classification: ams 5731 assn std single material response or ams 5737 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unrc
Specification/Standard Data: 80205-nas1352 professional/industrial association standard

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
NAS1352N20-64	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-389-4197?

The FSCG of the NSN 5305-01-389-4197 is 5305

Does the NSN 5305-01-389-4197 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-389-4197 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 5305-01-389-4197 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-389-4197 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 5305-01-389-4197 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Sun, Apr 24, 1994