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7791663 Hexagon Plain Nut

5310-00-953-6340

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Official Item Classification

Name
Hexagon Plain Nut
Part Number
7791663
(NSN) National Stock Number
5310-00-953-6340
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
01857
(FIIG) Federal Item Identification Guide
A021A0
Date
05/20/1966 (60 years ago)

right-hand thread direction, 0.260 inches minimum and 0.270 inches maximum nut height, hexagon nut style, 3b thread class, 0.365 inches minimum and 0.375 inches maximum width across flats

Specs & Compatibility

Thread Class

3b

Thread Direction

right-hand

Nut Style

hexagon

Nut Height

0.260 inches minimum and 0.270 inches maximum

Width Across Flats

0.365 inches minimum and 0.375 inches maximum

Thread Series

unf

Thread Quantity Per Inch

28

Hardness Rating

30.0 rockwell c minimum and 36.0 rockwell c maximum

Nominal Thread Size

0.250 inches

Countersink Angle

90.0 degrees nominal nut

Bearing Surface Type

chamfered

Bearing Surface Finish

125.0 microinches

Material

steel comp 8640 overall

Surface Treatment

phosphate overall

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0001857

Related Hardware Products

Part Number Description
7791663 Hexagon Plain Nut

Frequently Asked Questions

What is the FSCG of the NSN 5310-00-953-6340?
The FSCG of the NSN 5310-00-953-6340 is 5310
Does the NSN 5310-00-953-6340 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-953-6340 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 5310-00-953-6340 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-00-953-6340 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 5310-00-953-6340 was assigned to the Federal Catalog?
It was assigned 60 years ago, on Fri, May 20, 1966