MS35691-50

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-891-3404

Item Name Code

01857

Assigment Date

01/20/1967 (59 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.)

0.922 inches minimum and 0.938 inches maximum width across flats, right-hand thread direction, 2b thread class, 0.363 inches minimum and 0.387 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: 0.363 inches minimum and 0.387 inches maximum
Width Across Flats: 0.922 inches minimum and 0.938 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 11
Hardness Rating: 22.0 rockwell c minimum and 38.0 rockwell c maximum
Nominal Thread Size: 0.625 inches
Bearing Surface Type: chamfered or washer faced
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Nondefinitive Spec/Std Data: 2 type and 5 style and c grade

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
14H821	Hexagon Plain Nut
2001E001P14	Hexagon Plain Nut
5310008913404	Hexagon Plain Nut
90494A035	Hexagon Plain Nut
MS35691-50	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-891-3404?

The FSCG of the NSN 5310-00-891-3404 is 5310

Does the NSN 5310-00-891-3404 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-891-3404 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 5310-00-891-3404 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-891-3404 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 5310-00-891-3404 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Fri, Jan 20, 1967