NAS1221-08-7T

View detailed technical data, stock status, and sourcing information for: NAS1221-08-7T
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-580-6340

Item Name Code

06657

Assigment Date

12/19/1974 (51 years ago)

0.762 inches minimum and 0.792 inches maximum fastener length, 0.314 inches minimum and 0.364 inches maximum thread length, flat countersunk head style, 3a thread class, right-hand thread direction

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: 0.314 inches minimum and 0.364 inches maximum
Fastener Length: 0.762 inches minimum and 0.792 inches maximum
Head Style: flat countersunk
Head Diameter: 0.294 inches minimum and 0.332 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp 4140 or steel comp 4340 or steel comp 8740
Screw Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416 ty 2 class 2 fed spec single treatment response
Thread Series Designator: unjc
Specification/Standard Data: 80205-nas1221 professional/industrial association standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-01-044-2220	No Name Available	01/01/1987

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
NAS1221-08-7	Machine Screw
NAS1221-08-7T	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-580-6340?

The FSCG of the NSN 5305-00-580-6340 is 5305

Does the NSN 5305-00-580-6340 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-580-6340 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 5305-00-580-6340 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-580-6340 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 5305-00-580-6340 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Thu, Dec 19, 1974