N4-2-1

N421 Plain Cap Nut

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Quality Commitment

Serving our customers with quality and safety first.

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AS9120 Certified by SAI Global

Datasheet. N4-2-1 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.

cap

Nut Height

0.437in. ⁓7/16"

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.

unc

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

18

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

0.312in. ⁓5/16"

Bearing Surface Type
Indicates the type of bearing surface.

chamfered or washer faced

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

copper alloy 462 or copper alloy 464 or copper alloy 482 or copper alloy 485

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-B-637 fed spec all material responses

Nondefinitive Spec/std Data
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.

3 type and 15 style

Departure From Cited Designator
The variation when the item is in conformity with a type designator covered by a specification or standard,except in regard to one or more technical differentiating characteristics.

as modified by dimensions

Answers.

What quantity is this sold in?

1EA

What material is the plain cap nut made of ?

Copper alloy 462 or copper alloy 464 or copper alloy 482 or copper alloy 485

What is the thread quantity per inch?

18

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for N4-2-1?

5310-00-275-3338

How is this classified for shipping?

Schedule B number: 7415290000
nmfc 093460
Copper screws, nuts, bolts, rivets, and other fasteners not threaded

What's the federal classification of N4-2-1?

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 5310-00-275-3338 NUT,PLAIN,CAP

18 thread quantity per inch right-hand 3b thread class

NIIN
002753338
NIIN Date
01/01/63
Schedule B
7415290000 
Name Code
01855
FIIG
A021A0
Item Weight
0.000lbs
Item Dimensions
--
QUP
Historical Price
$0.80 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

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. FFN836 Cage 81348

Major End Users Countries and entities

  • - Department of The Navy 
  • - Brazil 
  • - Spain 
  • - Republic of Korea 
  • - Greece 
  • - Turkey 

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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)
093460 BOLTS/NUTS NOI BBC/ZINC 
UFC (universal freight code)
48930 

Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

N4-2-1 / Nut,plain,capWhat is the formal definition of this item?

An item internally threaded from one end, and completely inclosed on the opposite end. the outer periphery parallel to the threaded axis may be square, cylindrical, hexagonal, octagonal, or dodecagonal and taper to a cone or dome shape on the closed end. for like items which are stamped or formed from sheet stock, see nut (1), stamped. for similar items which are flat on top and bottom see nut (1), sleeve or post, electrical-mechanical equipment.