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124D91 Extended Washer Self-Locking Nut

5310-00-514-8821

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Official Item Classification

Name
Extended Washer Self-Locking Nut
Part Number
124D91
(NSN) National Stock Number
5310-00-514-8821
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
29730
(FIIG) Federal Item Identification Guide
A021A0
Date
01/01/1961 (65 years ago)

3b thread class, right-hand thread direction, prevailing torque all metal design locking feature, 0.740 inches minimum and 0.760 inches maximum washer outside diameter, 0.390 inches minimum and 0.410 inches maximum overall height

Specs & Compatibility

Thread Class

3b

Thread Direction

right-hand

Locking Feature

prevailing torque all metal design

Washer Outside Diameter

0.740 inches minimum and 0.760 inches maximum

Overall Height

0.390 inches minimum and 0.410 inches maximum

Nut Style

hexagon

Washer Thickness

0.050 inches minimum and 0.070 inches maximum

Width Across Flats

0.493 inches minimum and 0.500 inches maximum

Thread Series

unf

Thread Quantity Per Inch

24

Hardness Rating

19.0 rockwell c minimum and 26.0 rockwell c maximum

Nominal Thread Size

0.312 inches

Material

steel comp 8740 or steel comp 4140 overall

Material Document And Classification

ams 6322 assn std 1st material response or ams 6382 assn std 2nd material response overall

Surface Treatment

cadmium overall

Surface Treatment Document And Classification

ams 2400 assn std single treatment response overall

Replacement For

Part Number Description
5310-00-350-4063 No Name Available 01/01/1963

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

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.

Source of Supply Code

S9I

Pseudo Item Name Code

0029730

Related Hardware Products

Part Number Description
124D91 Extended Washer Self-Locking Nut
200216 Extended Washer Self-Locking Nut

Frequently Asked Questions

What is the FSCG of the NSN 5310-00-514-8821?
The FSCG of the NSN 5310-00-514-8821 is 5310
Does the NSN 5310-00-514-8821 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-514-8821 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 5310-00-514-8821 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-514-8821 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 5310-00-514-8821 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961