NAS720B8-6

View detailed technical data, stock status, and sourcing information for: NAS720B8-6
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-137-7759

Item Name Code

06660

Assigment Date

09/02/1982 (43 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

2a thread class, right-hand thread direction, 0.375 inches nominal fastener length, 0.375 inches nominal thread length, pan no. 2 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: 2a
Thread Direction: right-hand
Thread Length: 0.375 inches nominal
Fastener Length: 0.375 inches nominal
Head Style: pan no. 2
Head Diameter: 0.314 inches nominal
Head Height: 0.090 inches nominal
Washer Quantity: 2
Internal Drive Style: slot
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Secondary Washer Relationship To Primary Washer: not identical
Secondary Washer Style: flat
Primary Washer Outside Diameter: 0.293 inches nominal
Secondary Washer Outside Diameter: 0.293 inches nominal
Primary Washer Style: split helical ring
Primary Washer Material Thickness: 0.040 inches nominal
Secondary Washer Material Thickness: 0.016 inches nominal
Material: copper alloy 342 fastener
Material: copper alloy 510 primary washer
Material: copper secondary washer
Surface Treatment: tin fastener
Surface Treatment: tin secondary washer
Surface Treatment: tin primary washer
Thread Series Designator: unc
Specification/Standard Data: 80205-nas720 professional/industrial association standard

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
NAS720B8-6	Assembled Washer Screw

FAQs

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

What is the FSCG of the NSN 5305-01-137-7759?

The FSCG of the NSN 5305-01-137-7759 is 5305

Does the NSN 5305-01-137-7759 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-01-137-7759 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 5305-01-137-7759 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-137-7759 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 5305-01-137-7759 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, Sep 2, 1982