5305-01-398-3581

Find complete technical information, availability, and procurement data for: 5305-01-398-3581
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-398-3581

Item Name Code

41756

Assigment Date

10/31/1994 (31 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

cross recess type ii internal drive style, 0.719 inches minimum and 0.781 inches maximum fastener length, 0.425 inches minimum and 0.445 inches maximum head diameter, modified pan head style, 0.170 inches nominal head height

Product Characteristics

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

Fastener Length: 0.719 inches minimum and 0.781 inches maximum
Head Style: modified pan
Head Diameter: 0.425 inches minimum and 0.445 inches maximum
Head Height: 0.170 inches nominal
Internal Drive Style: cross recess type ii
Nonmachine Thread Style: gimlet point (type a, ab or ba)
Nonmachine Nominal Thread Diameter: 0.190 inches
Material: steel comp 1021 overall
Surface Treatment: chromate zinc 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
1594900	Tapping Screw
B71-04768-002	Tapping Screw

FAQs

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

What is the FSCG of the NSN 5305-01-398-3581?

The FSCG of the NSN 5305-01-398-3581 is 5305

Does the NSN 5305-01-398-3581 have a Schedule B code assigned?

Yes, the Schedule B code is 7318140000

Does NSN 5305-01-398-3581 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 5305-01-398-3581 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-398-3581 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 5305-01-398-3581 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Mon, Oct 31, 1994