5310-01-203-8391

Find complete technical information, availability, and procurement data for: 5310-01-203-8391
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-203-8391

Item Name Code

01857

Assigment Date

03/20/1985 (41 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

left-hand thread direction, hexagon nut style, 3b thread class, 0.034 inches minimum and 0.039 inches maximum drilled hole diameter, 0.156 inches nominal nut height

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: left-hand
Nut Style: hexagon
Nut Height: 0.156 inches nominal
Drilled Hole Diameter: 0.034 inches minimum and 0.039 inches maximum
Hole Type And Quantity: 3 drilled
Width Across Flats: 0.334 inches minimum and 0.346 inches maximum
Thread Series: unjc
Thread Quantity Per Inch: 32
Hardness Rating: 34.0 rockwell c minimum and 38.0 rockwell c maximum
Nominal Thread Size: 0.1640 inches
Hole Configuration Style: configuration b
Countersink Angle: 110.0 degrees nominal both ends
Bearing Surface Type: chamfered
Bearing Surface Finish: 125.0 microinches
Material: steel comp 4130 or steel comp 4340 overall
Material Document And Classification: mil-s-6758 mil std single material response or mil-s-5000 mil std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type2,class2 mil std single treatment response overall
Specification/Standard Data: 80205-nas1423 professional/industrial association standard

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
NAS1423-08LH	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-203-8391?

The FSCG of the NSN 5310-01-203-8391 is 5310

Does the NSN 5310-01-203-8391 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-203-8391 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 5310-01-203-8391 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-203-8391 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 5310-01-203-8391 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Wed, Mar 20, 1985