28404

28404 Hexagon Castellated Plain Nut

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Datasheet. 28404 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.

castellated, hexagon

Nut Height

0.656in. ⁓21/32"

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

0.562in. ⁓9/16"

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

unf

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

24

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

0.375in. ⁓3/8"

Bearing Surface Type
Indicates the type of bearing surface.

flat or washer faced

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

aluminum alloy

Reference Number Differentiating Characteristics
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.

magnetic permeability less than 1.2 before fabrication and notgreater than 2.0 after fabrication as measured in a 200 oersted field

Answers.

What material is the hexagon castellated plain nut made of ?

Aluminum alloy

What is the thread quantity per inch?

24

What is the thread direction?

Right-hand

What is the thread class?

2b

What is the NSN for 28404?

5310-00-107-1600

How is this classified for shipping?

Schedule B number: 7616995095
nmfc 013540
Articles of aluminum nesoi

What's the federal classification of 28404?

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 5310-00-107-1600 NUT,PLAIN,CASTELLATED,HEXAGON

24 thread quantity per inch right-hand 2b thread class

NIIN
001071600
NIIN Date
08/02/68
Schedule B
7616995095 
Name Code
01854
FIIG
A021A0
Item Weight
0.100lbs
Item Dimensions
--
QUP
 
Historical Price
$23.10 EA
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

  • - Department of The Navy 
  • - Republic of Korea 

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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)
Unknown
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

28404 / 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.