538178

538178 Hexagon Castellated Plain Nut

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Quality Commitment

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Datasheet. 538178 specification

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

3b

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.

castellated, hexagon

Nut Height

1.030in. and 1.090in. ⁓1-3/32"

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

3.500in. ⁓3-1/2"

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

un

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

12

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

2.750in. ⁓2-3/4"

Bearing Surface Type
Indicates the type of bearing surface.

chamfered

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

aluminum alloy 2024

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

QQ-A-225/6 fed spec single material response

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.

anodize

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-A-696 fed spec single treatment response

Answers.

What material is the hexagon castellated plain nut made of ?

Aluminum alloy 2024

What is the thread quantity per inch?

12

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for 538178?

5310-00-208-3167

How is this classified for shipping?

Schedule B number: 7616995095
nmfc 013540
Articles of aluminum nesoi

What's the federal classification of 538178?

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 5310-00-208-3167 NUT,PLAIN,CASTELLATED,HEXAGON

anodize surface treated 12 thread quantity per inch right-hand 3b thread class

NIIN
002083167
NIIN Date
01/01/63
Schedule B
7616995095 
Name Code
01854
FIIG
A021A0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Greece 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
70.0 
LCL (less than a car load rating)
70.0
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
013540 ALUM NUTS 
UFC (universal freight code)
05680 

Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

538178 / Nut,plain,castellated,hexagonWhat is the formal definition of this item?

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. it is designed to provide positive locking when used with a solid or split (cotter) pin. excludes nut (1), plain, slotted, hexagon.