AN157120

AN157120 Stepped Stud

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
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AS9120 Certified by SAI Global

Datasheet. AN157120 specification

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

2a stud thread

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

3a nut thread

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

+0.2810/+0.2825in. stud thread

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 thread

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 stud thread

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.625in. stud thread and 0.736in. stud thread ⁓3/4"

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.438in. nut thread and 0.509in. nut thread ⁓33/64"

Shank Diameter
The length of a straight line which passes through the center of the body of the shank and terminates at the circumference.

0.221in. and 0.231in.

Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

1.178in. and 1.198in. ⁓1-13/64"

Distance From Cotter Pin Hole Centerline To Nut End
The distance,measured along a straight line parallel to the longitudinal axis,from the center of the cotter pin hole to the nut end of the item.

0.100in. first hole and 0.120in. first hole

Cotter Pin Hole Diameter
The length of a straight line which passes through the center of the cotter pin hole,and terminates at the circumference.

0.065in. first hole and 0.072in. first hole

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

spec item

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

18 stud thread

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

28 nut thread

Hardness Rating
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

26.0 rockwell c and 32.0 rockwell c

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

0.250in. nut thread ⁓1/4"

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

0.312in. stud thread ⁓5/16"

Surface Finish
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

32.0 microinches nut thd

Surface Finish
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

32.0 microinches stud thd

Surface Finish
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

63.0 microinches shank

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

steel comp 8740

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.

AMS6322 assn std 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.

cadmium

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.

AMS2400 assn std single treatment response

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

stepped

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unf nut thread

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

uns stud thread

Answers.

What class is the thread series?

Uns stud thread

What class is the thread series?

Unf nut thread

What is the style?

Stepped

What material is the stepped stud made of ?

Steel comp 8740

What is the thread quantity per inch?

28 nut thread

What is the thread quantity per inch?

18 stud thread

What is the thread length?

0.438 inches minimum nut thread and 0.509 inches maximum nut thread

What is the thread length?

0.625 inches minimum stud thread and 0.736 inches maximum stud thread

What is the thread direction?

Right-hand stud thread

What is the thread direction?

Right-hand nut thread

What is the thread class?

3a nut thread

What is the thread class?

2a stud thread

What is the NSN for AN157120?

5307-01-257-0782

What's the federal classification of AN157120?

FSC 5307 ⁓ Studs

NSN 5307-01-257-0782 STUD,STEPPED

Used on spec item. uns stud thread thread series stepped cadmium surface treated 28 nut thread thread quantity per inch 1.178" overall length 0.438" nut thread thread length right-hand stud thread 3a nut thread thread class

NIIN
012570782
NIIN Date
06/11/87
Schedule B
 
Name Code
15949
FIIG
A051A0
QUP
 
Historical Price
$71.28 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - 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)
Rating variable 
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)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

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Nothing similar to this part number was found in our inventory

AN157120 / Stud,steppedWhat is the formal definition of this item?

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends on which the nominal diameter of one threaded section is greater than the other. the entire unthreaded portion must be of a single diameter equal to or smaller than the maximum major diameter of the larger threaded end. includes radial grooves or thread reliefs. excludes items with tapered threads.