188091

View detailed technical data, stock status, and sourcing information for: 188091
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-275-5609

Item Name Code

01857

Assigment Date

01/01/1963 (63 years ago)

3b thread class, 0.304 inches minimum and 0.313 inches maximum width across flats, hexagon nut style, 0.155 inches minimum and 0.165 inches maximum nut height, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.155 inches minimum and 0.165 inches maximum
Width Across Flats: 0.304 inches minimum and 0.313 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Countersink Angle: 85.0 degrees minimum and 95.0 degrees maximum nut
Bearing Surface Type: washer faced
Material: steel comp 303 or steel comp 303se or steel comp 303 plus x overall
Material Document And Classification: ams 5640 assn std all material responses overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-550-4192	No Name Available	05/01/1984

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
188091	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-275-5609?

The FSCG of the NSN 5310-00-275-5609 is 5310

Does the NSN 5310-00-275-5609 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-275-5609 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 5310-00-275-5609 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-275-5609 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 5310-00-275-5609 was assigned to the Federal Catalog?

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