400948

View detailed technical data, stock status, and sourcing information for: 400948
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-979-5740

Item Name Code

05277

Assigment Date

01/01/1962 (64 years ago)

A cylindrically-shaped metal item, usually tubular, designed to form a pivoting connection between the piston and connecting rod of an internal combustion engine, compressor and like items. May include oil sealing or pin retaining plugs. Excludes:bushing, sleeve; pin, grooved, headless; pin, straight, headless; and pin, hollow.

right-hand thread direction, 3b thread class, 0.313 inches nominal nut height, prevailing torque all metal design or prevailing torque with nonmetallic insert locking feature, hexagon nut style

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 or prevailing torque with nonmetallic insert
Nut Style: hexagon
Nut Height: 0.313 inches nominal
Width Across Flats: 0.440 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 20
Nominal Thread Size: 0.250 inches
Bearing Surface Type: chamfered
Part Name Assigned By Controlling Agency: navy special project
Special Features: hexagon corners reworked to .460 dia
Material: steel corrosion resisting overall
Surface Treatment: passivate nut

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
400948	Hexagon Self-Locking Nut
A1N948	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-979-5740?

The FSCG of the NSN 5310-00-979-5740 is 5310

Does the NSN 5310-00-979-5740 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-979-5740 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 5310-00-979-5740 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-979-5740 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 5310-00-979-5740 was assigned to the Federal Catalog?

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