MS51831-201L

View detailed technical data, stock status, and sourcing information for: MS51831-201L
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5325 Fastening Devices

National Stock Number

5325-00-253-2812

Item Name Code

11444

Assigment Date

07/30/1969 (56 years ago)

3b thread class, 0.312 inches nominal length, 0.375 in.-16 insert size, right-hand thread direction, 0.242 inches nominal thread length

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
Thread Length: 0.242 inches nominal
Length: 0.312 inches nominal
Insert Size: 0.375 in.-16
Internal Thread Relief Depth: 0.070 inches nominal
Full Internal Thread Length: 0.242 inches nominal
Features Provided: individually keyed
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Special Features: has internal thread lock
Material: steel comp 302 overall
Material Document And Classification: fed std 66 fed std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Style Designator: keylock
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Below is a list of NSNs that have been officially superseded by this NSN: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
5340-00-065-3723	No Name Available	01/01/1981
5340-00-079-2070	No Name Available	05/01/1984
5340-00-989-0484	No Name Available	12/01/1981

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
837489-00	Screw Thread Insert
KH9005-3	Screw Thread Insert
KNHL1032	Screw Thread Insert
KNHL1032J	Screw Thread Insert
MS51831-201L	Screw Thread Insert
NAS1395C3L	Screw Thread Insert

FAQs

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

What is the FSCG of the NSN 5325-00-253-2812?

The FSCG of the NSN 5325-00-253-2812 is 5325

Does the NSN 5325-00-253-2812 have a Schedule B code assigned?

Yes, the Schedule B code is 9606100000

Does NSN 5325-00-253-2812 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 5325-00-253-2812 contain precious materials?

Precious metal content is unknown

Does NSN 5325-00-253-2812 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 5325-00-253-2812 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Jul 30, 1969