5310-00-550-0990

Find complete technical information, availability, and procurement data for: 5310-00-550-0990
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-550-0990

Item Name Code

05277

Assigment Date

01/01/1963 (63 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.

0.219 inches minimum and 0.239 inches maximum nut height, prevailing torque with nonmetallic insert locking feature, hexagon nut style, 3b thread class, right-hand thread direction

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 with nonmetallic insert
Nut Style: hexagon
Nut Height: 0.219 inches minimum and 0.239 inches maximum
Width Across Flats: 0.336 inches minimum and 0.345 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 36
Nominal Thread Size: 0.164 inches
Bearing Surface Type: chamfered
Bearing Surface Finish: 125.0 microinches
Material: steel comp 1212 nut
Material Document And Classification: mil-m-20693 mil spec all material responses locking insert
Material Document And Classification: qq-s-637 fed spec single material response nut
Surface Treatment: cadmium overall except insert
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response overall except insert

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-474-2111	No Name Available	01/05/1968

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
10172221	Hexagon Self-Locking Nut
22NM86	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-550-0990?

The FSCG of the NSN 5310-00-550-0990 is 5310

Does the NSN 5310-00-550-0990 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-550-0990 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 5310-00-550-0990 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-550-0990 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 5310-00-550-0990 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963