S3BX7

View detailed technical data, stock status, and sourcing information for: S3BX7

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S3BX7
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-012-2021
Item Name Code
01857
Assigment Date
01/01/1961 (65 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.)

3b thread class, hexagon nut style, right-hand thread direction, 0.9220 inches minimum and 0.9375 inches maximum width across flats, 0.535 inches minimum and 0.550 inches maximum 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
right-hand
Nut Style
hexagon
Nut Height
0.535 inches minimum and 0.550 inches maximum
Width Across Flats
0.9220 inches minimum and 0.9375 inches maximum
Thread Series
unf
Thread Quantity Per Inch
18
Nominal Thread Size
0.625 inches
Bearing Surface Type
chamfered or washer faced
Material
steel overall
Surface Treatment
cadmium or zinc overall
Nondefinitive Spec/Std Data
a type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
2815-00-525-1985 No Name Available 03/17/1969

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
S3BX7 Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-012-2021?
The FSCG of the NSN 5310-00-012-2021 is 5310
Does the NSN 5310-00-012-2021 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-012-2021 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 5310-00-012-2021 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-012-2021 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 5310-00-012-2021 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961

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