NAS1581C6T11

View detailed technical data, stock status, and sourcing information for: NAS1581C6T11
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-225-2612

Item Name Code

29294

Assigment Date

01/30/1986 (40 years ago)

flat countersunk head style, right-hand thread direction, 3a thread class, 1.267 inches minimum and 1.297 inches maximum fastener length, 0.569 inches minimum and 0.619 inches maximum 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: 0.569 inches minimum and 0.619 inches maximum
Fastener Length: 1.267 inches minimum and 1.297 inches maximum
Head Style: flat countersunk
Head Diameter: 0.5149 inches minimum and 0.5662 inches maximum
Grip Diameter: 0.3735 inches minimum and 0.3745 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.375 inches
Grip Length: 0.678 inches minimum and 0.698 inches maximum
Thread Quantity Per Inch: 24
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 100.0 degrees maximum
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: iron alloy 660 overall
Material Document And Classification: ams5731 assn std single material response or ams5732 assn std single material response or ams5737 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: unjf
Specification/Standard Data: 80205-nas1581 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
NAS1581C6T11	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-225-2612?

The FSCG of the NSN 5305-01-225-2612 is 5305

Does the NSN 5305-01-225-2612 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-225-2612 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 5305-01-225-2612 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-225-2612 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 5305-01-225-2612 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Jan 30, 1986