20501-63

View detailed technical data, stock status, and sourcing information for: 20501-63
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-066-9391

Item Name Code

01857

Assigment Date

10/21/1978 (47 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.)

2b thread class, right-hand thread direction, 0.180 inches minimum and 0.189 inches maximum width across flats, 0.057 inches minimum and 0.066 inches maximum nut height, 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: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.057 inches minimum and 0.066 inches maximum
Width Across Flats: 0.180 inches minimum and 0.189 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 40
Nominal Thread Size: 0.112 inches
Bearing Surface Type: chamfered
Material: steel comp 1109 or steel comp 1110 or steel comp 1116 or steel comp 1117 or steel comp 1118 overall
Material Document And Classification: aisi assn std all material responses overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ec2-1,type 2,class 3,fscm 92739 mfr ref single treatment response overall
Specification/Standard Data: 92739-la1-8 manufacturers standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-200-0826	No Name Available	10/01/2010
5310-00-273-4502	No Name Available	02/01/2007
5310-00-573-9644	No Name Available	12/01/1992
5310-00-685-8277	No Name Available	02/01/2007
5310-01-015-1018	No Name Available	12/01/1992
5310-01-154-4326	No Name Available	09/01/2009
5310-01-227-6402	No Name Available	02/01/2007

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
108675-505	Hexagon Plain Nut
20501-63	Hexagon Plain Nut
45044-1205	Hexagon Plain Nut
492-032	Hexagon Plain Nut
8002A	Hexagon Plain Nut
8002AADX	Hexagon Plain Nut
820500G19A1	Hexagon Plain Nut
820500G19AI	Hexagon Plain Nut
N248P9	Hexagon Plain Nut
NLPAE09000	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-066-9391?

The FSCG of the NSN 5310-01-066-9391 is 5310

Does the NSN 5310-01-066-9391 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-066-9391 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 5310-01-066-9391 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-066-9391 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 5310-01-066-9391 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Sat, Oct 21, 1978