5305-01-137-7293

Find complete technical information, availability, and procurement data for: 5305-01-137-7293
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-137-7293

Item Name Code

16282

Assigment Date

09/01/1982 (43 years ago)

3a thread class, flat countersunk head style, 0.497 inches nominal thread length, 1.147 inches nominal fastener length, 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: 0.497 inches nominal
Fastener Length: 1.147 inches nominal
Head Style: flat countersunk
Head Diameter: 0.394 inches minimum and 0.404 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.156 inches minimum and 0.159 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 180000 pounds per square inch
Countersink Angle: 100.0 degrees nominal
Special Features: two lead thread,drilled hole,0.375 in. from top of head,0.097 in. min. and 0.104 in. max. dia,extended washer,0.025 in. min. and 0.035 in. max. thickness by 0.515 in. dia.
Material: steel comp 8740 or steel comp 4140 overall
Material Document And Classification: mil-s-6049 mil spec 1st material response or mil-s-5626 mil spec 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 type 2 class 2 fed spec single treatment response overall
Thread Series Designator: unf

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
CA21155-4-6HS	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-137-7293?

The FSCG of the NSN 5305-01-137-7293 is 5305

Does the NSN 5305-01-137-7293 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-137-7293 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 5305-01-137-7293 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-137-7293 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 5305-01-137-7293 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Wed, Sep 1, 1982