4 1-2 - 8UN ROU ND (SPL)

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-323-3793

Item Name Code

15887

Assigment Date

07/26/1990 (36 years ago)

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

round nut style, right-hand thread direction, 1.000 inches nominal drive point depth, 8.500 inches nominal nut diameter, 2b 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: 2b
Thread Direction: right-hand
Drive Point Depth: 1.000 inches nominal
Nut Style: round
Nut Diameter: 8.500 inches nominal
Nut Thickness: 4.500 inches nominal
Drive Point Quantity: 4
Hole Type And Quantity: 1 tapped
Thread Series: un
Thread Quantity Per Inch: 8
Nominal Thread Size: 4.500 inches
Part Name Assigned By Controlling Agency: navy special project
Special Features: ext circ groove,0.250 in. radius
Material: steel overall

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
4 1-2 - 8N ROUND (SPL)	Round Plain Nut
4 1-2 - 8N RPUN D (SPL)	Round Plain Nut
4 1-2 - 8UN ROU ND (SPL)	Round Plain Nut
D-2898 PIECE 21	Round Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-323-3793?

The FSCG of the NSN 5310-01-323-3793 is 5310

Does the NSN 5310-01-323-3793 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-323-3793 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 5310-01-323-3793 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-323-3793 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 5310-01-323-3793 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Thu, Jul 26, 1990