P148

P148 Cap Socket Head Screw

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Datasheet. P148 specification

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

2a

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.

0.375in. ⁓3/8"

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.

0.306in. and 0.312in.

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

0.185in. and 0.190in. ⁓13/64"

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

0.046in. ⁓3/64"

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.

0.156in. and 0.158in. ⁓11/64"

Hole Quantity
The number of holes provided.

4

Hole Type
Indicates the type of hole(s) provided in the item.

drilled

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

24

Hole Configuration Style
The style designation that most nearly corresponds to the appearance of the hole configuration.

round

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.

cadmium

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?

24

What is the inside hole diameter?

0.046 inches

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?

2a

What is the NSN for P148?

5305-00-449-2250

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of P148?

FSC 5305 ⁓ Screws

NSN 5305-00-449-2250 SCREW,CAP,SOCKET HEAD

unc thread series cadmium surface treated 24 thread quantity per inch 0.046" hole diameter flat chamfer head style 0.250" thread length right-hand 2a thread class

NIIN
004492250
NIIN Date
01/01/63
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

Other Part Numbers Parts with same form, fit, and function by other manufacturers

Major End Users Countries and entities

  • - Brazil 
  • - Spain 
  • - Singapore 
  • - Malaysia 
  • - Canada 
  • - France 
  • - Republic of Korea 
  • - United Kingdom 
  • - Portugal 
  • - Greece 
  • - Turkey 

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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)
50.0
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 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

P148 / 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.