ST3M747-3-6

ST3M74736 Close Tolerance Bolt

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Datasheet. ST3M747-3-6 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.

0.331in. ⁓11/32"

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.

0.706in. ⁓23/32"

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

spline drive shear head

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

0.140in. ⁓9/64"

Grip Diameter
The length of a straight line which passes through the center of the grip,and terminates at the circumference.

0.1890in. and 0.1895in.

Head Minor Diameter

0.386in.

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

F-15Sa

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

0.1900in. (UTS #10)

Grip Length
A measurement of the longest dimension of the grip,in distinction from width.

0.375in.

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

32

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

steel comp XM-13

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.

passivate

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.

unjf

Answers.

What class is the thread series?

Unjf

What material is the close tolerance bolt made of ?

Steel comp xm-13

What is the thread quantity per inch?

32

What is the grip length?

0.375 inches

What is the head style?

Spline drive shear head

What is the thread length?

0.331 inches

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for ST3M747-3-6?

5306-01-624-6749

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 ST3M747-3-6?

FSC 5306 ⁓ Bolts

NSN 5306-01-624-6749 BOLT,CLOSE TOLERANCE

Used on F-15SA. unjf thread series passivate surface treated 32 thread quantity per inch 0.375" grip length spline drive shear head head style 0.331" thread length right-hand 3a thread class

NIIN
016246749
NIIN Date
01/11/14
Schedule B
7318152000 
Name Code
27851
FIIG
A003B0
DEMIL / ITAR
Uncontrolled item (Code )
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
--
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Department of The Air Force 

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ST3M747-3-6 / Bolt,close toleranceWhat is the formal definition of this item?

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. for items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. for items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.