5305-01-406-2181

Find complete technical information, availability, and procurement data for: 5305-01-406-2181
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-406-2181

Item Name Code

33044

Assigment Date

12/23/1994 (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.

3a thread class, flat chamfer head style, right-hand thread direction, 0.535 inches nominal fastener length, 0.163 inches nominal thread length

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: 0.163 inches nominal
Fastener Length: 0.535 inches nominal
Head Style: flat chamfer
Head Diameter: 0.221 inches nominal
Head Height: 0.136 inches nominal
Internal Drive Style: hexagon
Material Accommodated Thickness: 0.188 inches minimum and 0.250 inches maximum
Nominal Thread Diameter: 0.138 inches
Width Across Flats: 0.109 inches nominal
Thread Quantity Per Inch: 32
Material: iron alloy 660 fastener
Material: steel comp 301 primary washer
Material: steel comp 304 stand-off
Material Document And Classification: ams 5735 assn std single material response fastener
Material Document And Classification: mil-s-5059 mil spec single material response primary washer
Material Document And Classification: qq-s-763 fed spec single material response or mil-s-23195 mil spec single material response stand-off
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response 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
CPR7900HS-6-D-3	Panel Screw Assembly
CS3082HS-06-3-4	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-406-2181?

The FSCG of the NSN 5305-01-406-2181 is 5305

Does the NSN 5305-01-406-2181 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-406-2181 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 5305-01-406-2181 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-406-2181 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 5305-01-406-2181 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Fri, Dec 23, 1994