81581-D

View detailed technical data, stock status, and sourcing information for: 81581-D
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-110-7915

Item Name Code

15895

Assigment Date

04/06/1981 (45 years ago)

+0.6437 to 0.6467 inches thread pitch diameters, right-hand thread direction, 0.906 inches nominal small end diameter, 0.094 inches nominal drive point depth, prevailing torque with nonmetallic insert locking feature

Product Characteristics

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

Thread Pitch Diameters: +0.6437 to 0.6467 inches
Thread Direction: right-hand
Locking Feature: prevailing torque with nonmetallic insert
Small End Diameter: 0.906 inches nominal
Drive Point Depth: 0.094 inches nominal
Nut Style: round
Nut Diameter: 1.110 inches minimum and 1.140 inches maximum
Nut Thickness: 0.375 inches minimum and 0.406 inches maximum
Drive Point Width: 0.105 inches minimum and 0.135 inches maximum
Undercut Thickness: 0.094 inches nominal
Drive Point Quantity: 4
Thread Series: uns
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.664 inches
Material: plastic polyamide (nylon) locking insert
Material: steel comp 1015 or steel comp 1018 or steel comp 1020 or steel comp 1117 or steel comp 1118 or steel comp 1213 or steel comp 1215 nut

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-01-078-2980	No Name Available	04/01/1986

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
81581-D	Round Self-Locking Nut
BHM-03	Round Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-110-7915?

The FSCG of the NSN 5310-01-110-7915 is 5310

Does the NSN 5310-01-110-7915 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-110-7915 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 5310-01-110-7915 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-110-7915 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 5310-01-110-7915 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Mon, Apr 6, 1981