NAS720B6-4

View detailed technical data, stock status, and sourcing information for: NAS720B6-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-935-7542

Item Name Code

06660

Assigment Date

03/22/1968 (58 years ago)

pan no. 2 head style, 0.157 inches minimum thread length, right-hand thread direction, 0.250 inches nominal fastener length, 2a thread class

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: 0.157 inches minimum
Fastener Length: 0.250 inches nominal
Head Style: pan no. 2
Head Diameter: 0.256 inches minimum and 0.270 inches maximum
Head Height: 0.072 inches minimum and 0.082 inches maximum
Washer Quantity: 2
Internal Drive Style: slot
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Secondary Washer Relationship To Primary Washer: not identical
Secondary Washer Style: flat
Primary Washer Style: split helical ring
Primary Washer Material Thickness: 0.031 inches minimum and 0.037 inches maximum
Secondary Washer Material Thickness: 0.031 inches minimum and 0.037 inches maximum
Material: copper alloy overall
Surface Treatment: tin overall
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
NAS720B6-4	Assembled Washer Screw

FAQs

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

What is the FSCG of the NSN 5305-00-935-7542?

The FSCG of the NSN 5305-00-935-7542 is 5305

Does the NSN 5305-00-935-7542 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-00-935-7542 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 5305-00-935-7542 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-935-7542 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 5305-00-935-7542 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Mar 22, 1968