NATO Stock Number
5136-00-671-2249
Sold in multiples of
DEMIL
NO
Thread Pitch Diameters
+0.2328/+0.2333 inches
Thread Direction
Right-hand
Thread Length
Between 0.9375 inches and 1.0625 inches
Shank Diameter
Between 0.2535 inches and 0.2550 inches
Width Across Flats
Between 0.187 inches and 0.191 inches
Overall Length
Between 2.4688 inches and 2.5312 inches
Flute Quantity
2
Thread Structure
Regular
Thread Forming Method
Ground
Starting Chamfer Type
Plug
Square End Length
Between 0.2500 inches and 0.3124 inches
Material And Location
Steel, high speed
Style Designator
Spiral pointed flute
Thread Size And Series/type Designator
0.250-20 unc
Nondefinitive Specification/std Data
2 type and a series and b style
Departure From Cited Designator
As modified by pitch diameter and flute date