THREADING/STYLE/SPIRAL FLUTE/398

Ideal for Stainless Steel

EDP: 1766101
4-40 X 4" H2 3FX SEMI-BOTT EXO VA3 S/O
Description
P

Steel

Medium Carbon Steel : 1035; 1045
Low Carbon Steel : 1010; 1018
High Carbon Steel : 1065

Good
Best
M

Stainless Steel

Stainless Steels : 300
Stainless Steels : 400
Stainless Steels : 17-4PH

Good
Best
P

Steel

Medium Carbon Steel : 1035; 1045
Low Carbon Steel : 1010; 1018
High Carbon Steel : 1065

Good
Best
M

Stainless Steel

Stainless Steels : 300
Stainless Steels : 400
Stainless Steels : 17-4PH

Good
Best
Description
EXOTAP VA-3 is the premium solution for tapping stainless steels. The long shank design enables long reach applications. The spiral flute series offers stable chip evacuation and reduces cutting forces. The spiral point series enables greater chip control and help produce tighly compacted chips for easy ejection from the hole.
Features & Benefits
HSSE material Increased wear resistance
Long Shank Capable of reaching 50% deeper holes than ANSI standard taps.
Spiral Flute For blind hole applications
Steam Oxide surface treatment S/O increases mechanical lubricity
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Thread Size - NumberNo. 4
Thread TypeUNC
Threads Per Inch40
Thread LimitH2
Chamfer TypeModified Bottom (2.5P)
Major Diameter - Inch0.112
Thread Length - Inch (Lc)0.19685
Tap Drill Size Min - Inch0.0849
Tap Drill Size Max - Inch0.0939
Neck Length - Inch (L1)0.838582
Overall Length - Inch (L)4
Square Length - Inch (Ik)0.1875
Shank Diameter - Inch (d)0.141
Square Width - Inch (k)0.11
STI ThreadNo
SubstrateHSSE
Surface TreatmentSteam Oxide
Coolant ThruNo
Number of Flutes3
Cutting DirectionRH
Helix Angle - Degree30
Helix DirectionRH
Interrupted ThreadNo
View Catalog PageHere
NotesNeck length is designed for reaching 50% deeper holes than ANSI standard taps.

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