M45913/1-20FG5C

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-143-6145

Item Name Code

05277

Assigment Date

09/20/1968 (57 years ago)

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.

hexagon nut style, 1.360 inches minimum and 1.422 inches maximum nut height, right-hand thread direction, prevailing torque with nonmetallic insert locking feature, 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
Locking Feature: prevailing torque with nonmetallic insert
Nut Style: hexagon
Nut Height: 1.360 inches minimum and 1.422 inches maximum
Width Across Flats: 1.801 inches minimum and 1.815 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 12
Nominal Thread Size: 1.250 inches
Bearing Surface Type: chamfered or washer faced
Bearing Surface Finish: 125.0 microinches
Material: plastic polyamide (nylon) locking insert
Material: steel nut
Material Document And Classification: sae j995, gr 5 assn std single material response nut
Surface Treatment: cadmium and chromate overall except insert
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall except insert

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
5310001436145	Hexagon Self-Locking Nut
M45913/1-20FG5C	Hexagon Self-Locking Nut
MS51922-83	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-143-6145?

The FSCG of the NSN 5310-00-143-6145 is 5310

Does the NSN 5310-00-143-6145 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-143-6145 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 5310-00-143-6145 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-143-6145 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 5310-00-143-6145 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Sep 20, 1968