J3937-57

J393757 Self-locking Double Hexagon Nut

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Datasheet. J3937-57 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

2b

Thread Direction
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

RIGHT-Hand

Nut Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.

hexagon

End Item Identification
The national stock number or the identification information of the end equipment for which the item is a part.

LM-320D and LM-320E aircraft engine mounting system

Thread Series
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.

unjf

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

0.500in. ⁓1/2"

Part Name Assigned By Controlling Agency
The name assigned to the item by the government agency or commercial organization controlling the design of the item.

nut, SELF-Locking (1/2-20 unjf)

Answers.

What is the thread direction?

Right-hand

What is the thread class?

2b

What is the NSN for J3937-57?

5310-01-641-9164

What's the federal classification of J3937-57?

FSC 5310 ⁓ Nuts and washers

Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.

Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).

NSN 5310-01-641-9164 NUT,SELF-LOCKING,DOUBLE HEXAGON

Used on lm-320d and lm-320e aircraft engine mounting system. nut, self-locking (1/2-20 unjf) right-hand 2b thread class

NIIN
016419164
NIIN Date
02/06/15
Schedule B
 
Name Code
05277
FIIG
A021A0
DEMIL / ITAR
Uncontrolled item (Code )
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
--
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Republic of Korea 

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Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

J3937-57 / Nut,self-locking,double hexagonWhat is the formal definition of this item?

A nut having 12 drive points and 24 sides. the bearing surface may be washer faced. an integral locking feature is incorporated in the design of the head or in the threads.