This extension spiral point tap is made of vanadium high speed steel and has a 0.318 inch diameter, 1.5900 inch long shank. It is for use with steel, and meets the standards for USCTI, ANSI. This 5305(EXT)/5303(EXT) series extension spiral point tap has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a six-inch length. Plus it has four flutes and a straight shank.
Technical Specs
ItemExtension Spiral Point Tap
Thread StandardUNC, UNJC
Tap MaterialVanadium High Speed Steel
Thread Length43/64 in
75% Thread Drill SizeF
Class of Fit3B
Number of Flutes4
55% Thread Drill SizeI
Coolant FedNon-Coolant Through
Measurement SystemFractional Inch
Primary Material Application ISO CodeP
Shank Dia.0.318 in
Shank Type - MachiningStraight
Square Size0.2380 in
Tap GroupingTap
Thread Limit / Class of FitH3 / 3B
Helix Angle0 Degrees
Thread Size5/16"-18
Tap ChamferPlug
Tap FinishBright (Uncoated)
Overall Length6 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardANSI
65% Thread Drill Size17/64 in
Extended NeckYes
Primary Material ApplicationSteel
Series5305(EXT)/5303(EXT)
Shank Length1.5900 in
Spiral DirectionNeutral
StandardsUSCTI
Tap StyleSpiral Point
Threads per Inch18 TPI
Country of OriginUnited States
(subject to change)