Widia GTD 1/4-28 UNF, 2B, 3 Flute, Oxide Finish, Vanadium HSS, Spiral Point Tap (SQ8274189WT08)

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SKU: SQ8274189WT08

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Plug chamfers are the most commonly used chamfer and are designed for efficiently threading through and blind holes. They have 3 to 5 threads.

Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and ferrous metals.

Vanadium High Speed Steel (HSSE) is made of high speed steel, carbon, vanadium carbide and other alloys to increase abrasive wear resistance and toughness. It is commonly used in general applications on stainless steels and high silicon aluminums.

Thread Size (Inch): 1/4-28

Number of Flutes: 3

Chamfer: Plug

Class of Fit: 2B

Thread Limit: H5

Finish/Coating: Oxide

Material: Vanadium High Speed Steel

Through Coolant: NonThrough Coolant

Thread Direction: Right Hand

Overall Length (Inch): 2-1/2

Oversize: Yes

Thread Standard: UNF

Thread Length (Inch): 0.5910

Series/List: 300

Shank Diameter (Decimal Inch): 0.2550

Square Size (Decimal Inch): 0.1910