5305-01-407-3472

Find complete technical information, availability, and procurement data for: 5305-01-407-3472
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-407-3472

Item Name Code

06660

Assigment Date

01/26/1995 (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.

2a thread class, right-hand thread direction, 0.560 inches nominal thread length, hexagon extended washer head style, 0.680 inches nominal fastener 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: 2a
Thread Direction: right-hand
Thread Length: 0.560 inches nominal
Fastener Length: 0.680 inches nominal
Head Style: hexagon extended washer
Head Height: 0.242 inches minimum and 0.252 inches maximum
Width Between Flats: 0.418 inches minimum and 0.438 inches maximum
Extended Washer Diameter: 0.380 inches nominal
Extended Washer Thickness: 0.055 inches minimum and 0.065 inches maximum
Spline Major Diameter: 0.287 inches nominal
Washer Quantity: 1
Internal Drive Style: torx
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Hardness Rating: 40.0 rockwell c minimum and 48.0 rockwell c maximum primary washer
Primary Washer Outside Diameter: 0.560 inches minimum and 0.580 inches maximum
Primary Washer Style: spring tension
Primary Washer Material Thickness: 0.030 inches minimum and 0.040 inches maximum
Special Features: sealing compound black pvc (pm-118) certified to fbms 6-10 ty. 1-b
Material: steel fastener
Material: steel primary washer
Surface Treatment: dichromate zinc 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
10499634	Assembled Washer Screw

FAQs

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

What is the FSCG of the NSN 5305-01-407-3472?

The FSCG of the NSN 5305-01-407-3472 is 5305

Does the NSN 5305-01-407-3472 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-407-3472 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 5305-01-407-3472 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-407-3472 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 5305-01-407-3472 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Thu, Jan 26, 1995