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Datasheet. J3937-57 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2b
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
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
hexagon
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
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unjf
A designation that is used for the purpose of general identification of the thread.
0.500in. ⁓1/2"
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.
Right-hand
2b
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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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.
