525-121-9004

5251219004 Self-locking Extended Washer Nut

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Datasheet. 525-121-9004 specification

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

3b

Thread Pitch Diameters
The minimum and maximum pitch diameter limits of a straight screw thread.

+0.3554/+0.3624in.

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

Locking Feature
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.

FREE-Running all metal design

Washer Outside Diameter

0.415in.

Overall Height
The distance measured in a straight line from the bottom to the top of an item.

0.300in.

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

double hexagon

Washer Thickness

0.056in.

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

HU-25 coast guard aircraft

Width Across Flats
The shortest straight line between flats,perpendicular to the height.

0.348in. ⁓23/64"

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.

1.0 mm

Thread Pitch In Millimeters
A measurement of distance between corresponding points on two adjacent threads measured parallel to the thread axis,expressed in millimeters.

1.50

Thread Tolerance Class
A numeric-alpha designator indicating established pitch and crest diameter tolerance position and grade.

6h internal

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel

Surface Treatment
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

silver

Answers.

What material is the self-locking extended washer nut made of ?

Steel

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for 525-121-9004?

5310-01-418-3945

How is this classified for shipping?

Schedule B number: 7318160000
Nuts of iron or steel

What's the federal classification of 525-121-9004?

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 5310-01-418-3945 NUT,SELF-LOCKING,EXTENDED WASHER

Used on hu-25 coast guard aircraft. silver surface treated right-hand 3b thread class

NIIN
014183945
NIIN Date
08/25/95
Schedule B
7318160000 
Name Code
29729
FIIG
A021A0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
--
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

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525-121-9004 / Nut,self-locking,extended washerWhat is the formal definition of this item?

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. an integral feature is incorporated for locking on the threads of a mating member.