55A921A207-4

55A921A2074 Self-locking Plate Nut

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
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AS9120 Certified by SAI Global

Datasheet. 55A921A207-4 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

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

prevailing torque all metal design

Mounting Hole Diameter
The length of a straight line which passes through the center of a mounting hole,and terminates at the circumference.

0.143 mils and 0.148 centimeters

Nut Mounting Provision
The means by which the nut is mounted.

straight holes

Mounting Hole Arrangement Style
The style designation indicating the configuration that most nearly corresponds to the arrangement of the mounting hole(s).

2 holes

Distance From Aperture Center To Mounting Hole Center

0.495in. and 0.505in.

Center To Center Distance Between Mounting Holes Along Length
A measurement of the center to center distance between the mounting holes along the length.

0.998in. and 1.002in.

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

unjf

Features Provided
Those features,not otherwise specified,which may be required for proper functioning of the item.

floating nut

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

28

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

0.250in. ⁓1/4"

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.

cadmium nut

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.

cadmium shell

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-P-416, type 2, class 2 fed spec single treatment response nut

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-P-416, type 2, class 2 fed spec single treatment response shell

Answers.

What quantity is this sold in?

1EA

What is the thread quantity per inch?

28

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for 55A921A207-4?

5310-00-275-2955

What's the federal classification of 55A921A207-4?

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 5310-00-275-2955 NUT,SELF-LOCKING,PLATE

cadmium shell surface treated 28 thread quantity per inch right-hand 3b thread class

NIIN
002752955
NIIN Date
08/04/73
Schedule B
 
Name Code
05280
FIIG
A021A0
Item Weight
0.300lbs
Item Dimensions
--
QUP
Historical Price
$249.13 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. 55A9291A207-4 Cage 72962

Major End Users Countries and entities

  • - Department of The Air Force 
  • - Department of The Navy 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
No rating 
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)
Food sercive equipment, (mkt), field ranges, vacuum cans, beverage containers, etc 
NMFC (national motor freight code)
000000 NO NMFC FREIGHT DESCRIPTION 
UFC (universal freight code)
00000 

Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

55A921A207-4 / Nut,self-locking,plateWhat is the formal definition of this item?

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. an integral feature is incorporated for locking on the threads of a mating member.