91251A106

91251A106 Cap Socket Head Screw

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Datasheet. 91251A106 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.

0.250in. ⁓1/4"

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.

0.250in. ⁓1/4"

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.

0.183in.

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

0.112in. ⁓1/8"

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

hexagon

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

2355-01-481-8570

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

0.112in. (UTS #4)

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

0.094in. ⁓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.

40

Part Name Assigned By Controlling Agency
The name assigned to the item by the government agency or commercial organization controlling the design of the item.

alloy steel socket head cap screw

Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.

per mcmaster carr part number has multiple sources and oem could not be provided

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

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

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.

unc

Answers.

What class is the thread series?

Unc

What material is the cap socket head screw made of ?

Steel

What is the thread quantity per inch?

40

What is the head style?

Flat chamfer

What is the thread length?

0.250 inches

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for 91251A106?

5305-01-633-6465

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 096640
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 91251A106?

FSC 5305 ⁓ Screws

NSN 5305-01-633-6465 SCREW,CAP,SOCKET HEAD

Used on 2355-01-481-8570. unc thread series oxide surface treated per mcmaster carr part number has multiple sources alloy steel socket head cap screw 40 thread quantity per inch flat chamfer head style 0.250" thread length right-hand 3a thread class

NIIN
016336465
NIIN Date
11/26/14
Schedule B
7318152000 
Name Code
16282
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 Army 

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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)
096640 SCREWS, IRON OR STEEL 
UFC (universal freight code)
50600 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

91251A106 / 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.