R399P2H

View detailed technical data, stock status, and sourcing information for: R399P2H
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-964-6781

Item Name Code

29729

Assigment Date

01/01/1962 (64 years ago)

right-hand thread direction, 0.396 inches minimum and 0.411 inches maximum overall height, 3b thread class, 0.443 inches maximum washer outside diameter, prevailing torque all metal design 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 Class: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Washer Outside Diameter: 0.443 inches maximum
Overall Height: 0.396 inches minimum and 0.411 inches maximum
Nut Style: double hexagon
Washer Thickness: 0.060 inches minimum and 0.080 inches maximum
Width Across Flats: 0.369 inches minimum and 0.376 inches maximum
Temp Rating: 1200.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
Material: iron alloy 660 overall
Material Document And Classification: ams 5732 assn std single material response or ams 5737 assn std single material response overall
Precious Material: silver
Surface Treatment: silver overall
Surface Treatment Document And Classification: ams 2410 assn std single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-017-6184	No Name Available	06/03/1970
5310-00-191-4927	No Name Available	01/01/1993
5310-00-450-3151	No Name Available	03/01/1978
5310-00-550-1368	No Name Available	07/01/1980
5310-00-900-9735	No Name Available	08/27/1971
5310-01-011-7044	No Name Available	07/01/1989
5310-01-011-7512	No Name Available	10/01/1988

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
BH00191-4	Extended Washer Self-Locking Nut
H19517-4	Extended Washer Self-Locking Nut
R399P2	Extended Washer Self-Locking Nut
R399P2A	Extended Washer Self-Locking Nut
R399P2C	Extended Washer Self-Locking Nut
R399P2H	Extended Washer Self-Locking Nut
R399P2J	Extended Washer Self-Locking Nut
R399P2M	Extended Washer Self-Locking Nut
R399P2S	Extended Washer Self-Locking Nut
SA4993C-428	Extended Washer Self-Locking Nut
SL4905-428	Extended Washer Self-Locking Nut
VN450B048	Extended Washer Self-Locking Nut
Z1855-048	Extended Washer Self-Locking Nut
Z4063-048	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-964-6781?

The FSCG of the NSN 5310-00-964-6781 is 5310

Does the NSN 5310-00-964-6781 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-964-6781 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 5310-00-964-6781 contain precious materials?

Item contains silver.

Does NSN 5310-00-964-6781 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 5310-00-964-6781 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962