371-90B

View detailed technical data, stock status, and sourcing information for: 371-90B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-537-1302

Item Name Code

01852

Assigment Date

01/01/1963 (63 years ago)

3a thread class, 0.110 inches nominal fastener length, 0.051 inches minimum and 0.055 inches maximum thread length, right-hand thread direction, flat countersunk 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: 0.051 inches minimum and 0.055 inches maximum
Fastener Length: 0.110 inches nominal
Head Style: flat countersunk
Head Diameter: 0.159 inches minimum and 0.164 inches maximum
First Diameter From Head: 0.058 inches minimum and 0.063 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.021 inches minimum and 0.029 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.086 inches
Thread Quantity Per Inch: 64
Countersink Angle: 82.0 degrees nominal
Externally Relieved Body Diameter Quantity: 1
Material: copper alloy overall
Material Document And Classification: qq-b-613 fed spec single material response overall
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
6610-00-371-0713	No Name Available	01/01/1963

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
371-90B	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-00-537-1302?

The FSCG of the NSN 5305-00-537-1302 is 5305

Does the NSN 5305-00-537-1302 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-00-537-1302 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 5305-00-537-1302 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-537-1302 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 5305-00-537-1302 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963