5305-01-137-3938

Find complete technical information, availability, and procurement data for: 5305-01-137-3938
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-137-3938

Item Name Code

41756

Assigment Date

08/25/1982 (43 years ago)

0.480 inches minimum and 0.520 inches maximum extended washer diameter, hexagon extended washer head style, 0.720 inches minimum and 0.750 inches maximum fastener length, 0.202 inches minimum and 0.240 inches maximum head height, 0.367 inches minimum and 0.375 inches maximum width between flats

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Fastener Length: 0.720 inches minimum and 0.750 inches maximum
Head Style: hexagon extended washer
Head Height: 0.202 inches minimum and 0.240 inches maximum
Width Between Flats: 0.367 inches minimum and 0.375 inches maximum
Extended Washer Diameter: 0.480 inches minimum and 0.520 inches maximum
Extended Washer Thickness: 0.030 inches minimum and 0.050 inches maximum
Internal Drive Style: w/o internal drive
Features Provided: casehardened
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Nonmachine Thread Style: blunt (type tt)
Nonmachine Nominal Thread Diameter: 0.250 inches
Material: steel comp 4037 overall
Material Document And Classification: 66 fed std single material response overall
Surface Treatment: cadmium or chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl2 fed spec 1st treatment response or mil-c-81562 ty2 cl2 mil spec 2nd treatment response overall

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
MS51871-3	Tapping Screw

FAQs

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

What is the FSCG of the NSN 5305-01-137-3938?

The FSCG of the NSN 5305-01-137-3938 is 5305

Does the NSN 5305-01-137-3938 have a Schedule B code assigned?

Yes, the Schedule B code is 7318140000

Does NSN 5305-01-137-3938 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 5305-01-137-3938 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-137-3938 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 5305-01-137-3938 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Wed, Aug 25, 1982