72531-3F-28B

725313F28B Cap Socket Head Screw
Home » Catalog » Fasteners (p. 2949) » Cap Socket Head Screws (p. 1) » Part Number 72531-3F-28B

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Datasheet. 72531-3F-28B specification

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

3a

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

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

1.750in. ⁓1-3/4"

Fastener Length
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.

1.750in. ⁓1-3/4"

Head Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.

flat chamfer

Head Diameter
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.

0.307in. and 0.312in.

Head Height
A measurement from the bottom to the top of the head,in distinction from depth.

0.092in. and 0.098in. ⁓7/64"

Internal Drive Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.

hexagon

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.190in. (UTS #10)

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

0.0938in. ⁓3/32"

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

32

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

38.0 rockwell c and 45.0 rockwell c

Color
A characteristic of light that can be specified in terms of luminance,dominant wavelength,and purity.

black

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

steel

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.

ASTMA574 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.

oxide

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.

MIL-C-13924, cl 1 mil spec single treatment response

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.

unrf

Answers.

What class is the thread series?

Unrf

What material is the cap socket head screw made of ?

Steel

What is the thread quantity per inch?

32

What is the head style?

Flat chamfer

What is the thread length?

1.750 inches

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for 72531-3F-28B?

5305-01-332-5204

How is this classified for shipping?

Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 72531-3F-28B?

FSC 5305 ⁓ Screws

NSN 5305-01-332-5204 SCREW,CAP,SOCKET HEAD

unrf thread series oxide surface treated 32 thread quantity per inch flat chamfer head style 1.750" thread length right-hand 3a thread class

NIIN
013325204
NIIN Date
01/11/91
Schedule B
7318152000 
Name Code
16282
FIIG
A003B0
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

  • - Germany 

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Nothing similar to this part number was found in our inventory

72531-3F-28B / Screw,cap,socket headWhat is the formal definition of this item?

An externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.