5305-01-179-6638

Find complete technical information, availability, and procurement data for: 5305-01-179-6638
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-179-6638

Item Name Code

01852

Assigment Date

05/20/1984 (42 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

0.406 inches nominal fastener length, 0.164 inches nominal thread length, 3a thread class, right-hand thread direction, round head style

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: 0.164 inches nominal
Fastener Length: 0.406 inches nominal
Head Style: round
Head Diameter: 0.263 inches nominal
Head Height: 0.092 inches nominal
First Diameter From Head: 0.095 inches nominal
Second Diameter From Head: 0.164 inches nominal
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.242 inches nominal
Internal Drive Style: cross recess type ii
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Externally Relieved Body Diameter Quantity: 2
Material: steel corrosion resisting overall
Material Document And Classification: ams 5731 assn std single material response or ams 5737 assn std single material response overall
Surface Treatment: passivate overall
Thread Series Designator: unjc

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
7908161-004	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-01-179-6638?

The FSCG of the NSN 5305-01-179-6638 is 5305

Does the NSN 5305-01-179-6638 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-179-6638 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 5305-01-179-6638 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-179-6638 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 5305-01-179-6638 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Sun, May 20, 1984