Part Number B94.9

Thread Cutting Tap
Description

Straight flutes. H1 thread limit, four flutes. For hand tapping in metal. Performs right-hand thread cutting. Made of high-speed, hardened steel. Has a square shank & ground threads. A bottoming tap has the first 1 to 2 threads chamfered; a plug tap has t

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Part Number
DEMIL
Shelf Life
UOM
NIIN
Part:
b94.9
Demil:
No
Shelf Life:
UOM:
NIIN:
002036647
NSN
National Stock Number:
5136-00-203-6647 5136002036647
TXT
Description:
Thread Cutting Tap
INC
INC
Item Name Code:
15218
MRC:
The minimum and maximum pitch diameter limits of a straight screw thread.AAJE
Thread Pitch Diameters:
+0.2175/+0.2180 inches
MRC:
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.AAJF
Thread Direction:
Right-hand
MRC:
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.AASA
Thread Length:
1.000 inches
MRC:
The length of a straight line which passes through the center of the body of the shank and terminates at the circumference.AAZE
Shank Diameter:
0.255 inches
MRC:
The shortest straight line between flats,perpendicular to the height of the wrenching surface.AAZK
Width Across Flats:
0.191 inches
MRC:
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP
Overall Length:
2.500 inches
MRC:
The number of flutes provided.ALAR
Flute Quantity:
4
MRC:
An indication of the thread structure.ANMJ
Thread Structure:
Regular
MRC:
The means used in forming the thread.ANMM
Thread Forming Method:
Ground
MRC:
Indicates the type of starting chamfer.ANMP
Starting Chamfer Type:
Taper
MRC:
A measurement of the longest dimension of a square end,in distinction from width.ANNL
Square End Length:
0.312 inches
MRC:
The element,compound,or mixture of which the item is fabricated,excluding any surface treatment,and its location.ANNQ
Material And Location:
Steel, high speed
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL
Style Designator:
Straight flute
MRC:
Designates the thread diameter,series/type,and number of threads per specific measurement scale.THDS
Thread Size And Series/type Designator:
0.250-20 unc
MRC:
The document designator of the specification or standard which established the item of supply.ZZZK
Specification Data:
05047-asme b94.9 professional/industrial association standard

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