STI Taps | McMaster-Carr

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System of Measurement

Thread Size

For Insert Thread Size

Chamfer Type

Installed Length

Less than 0.25"

0.25" to 0.499"

10 mm to 19.9 mm

20 mm to 24.9 mm

25 mm or greater

Helical Insert Type

Material

High-Speed Steel

Stainless Steel

For Use On

Stainless Steel

Thread Direction

Thread Pitch

For Tap Type

Specifications Met

Thread Type

Maximum Tapping Depth

For Insert Thread Type

Drill Bit Size

For Tap Thread Size

Military Specification

For Insert Thread Pitch

Pitch Diameter Limit

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

Number of Inserts Included

Thread Spacing

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1,261 Products

Taps

For Helical Inserts

Helical Insert Taps

Helical Insert Taps

Match the size of helical inserts so they fit tightly when installed

Left-Hand Thread Helical Insert Taps

Left-Hand Thread Helical Insert Taps

Size holes for installing helical inserts that anchor left-hand bolts and rods

Other Products

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)