1/2 IN 13UNC-2A X 2IN LG

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-252-1372

Item Name Code

06657

Assigment Date

03/30/1987 (39 years ago)

An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.

1.970 inches minimum and 2.000 inches maximum fastener length, 1.816 inches minimum and 2.000 inches maximum thread length, 2a thread class, flat countersunk head style, 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: 2a
Thread Direction: right-hand
Thread Length: 1.816 inches minimum and 2.000 inches maximum
Fastener Length: 1.970 inches minimum and 2.000 inches maximum
Head Style: flat countersunk
Head Diameter: 0.775 inches minimum and 0.875 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Minimum Tensile Strength: 80000 pounds per square inch
Countersink Angle: 82.0 degrees nominal
Screw Material: nickel alloy 400
Screw Material Document And Classification: qq-n-281 classa fed spec single material response
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 1 type and 2s style

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
1/2 IN 13UNC-2A X 2IN LG	Machine Screw
FF-S-92 TY1 STY 2S	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-252-1372?

The FSCG of the NSN 5305-01-252-1372 is 5305

Does the NSN 5305-01-252-1372 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-252-1372 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 5305-01-252-1372 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-252-1372 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 5305-01-252-1372 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Mar 30, 1987