Helicoil 8187-18


Straight Flute Tap, Plug, HSS, 1-1/8-7

8187-18 611240
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ItemStraight Flute Tap
Tap StyleGeneral Purpose
MaterialHSS Steel
Thread TypeUNC
Thread Length (In.)2.563
Overall Length (In.)5-3/4
Overall Length (mm)146.050
Pitch Diameter LimitsH4
Shank Dia.1.021"
Application For Use With Free Running and Screw Locking Inserts
Standards ANSI
Package Quantity 1
Weight 1.340000


Straight Flute Tap, Plug, Tap Style General Purpose, HSS Steel, Uncoated Finish, 6 Flutes, Size 1-1/8 In., Pitch 7, UNC, Pitch Diameter Limits H4, Standard Projection -, Shank Dia. 1.021 In., Surface Treated -, For Use With Free Running and Screw Locking Inserts, Tolerance 3B, ANSI StandardsPackage Quantity 1

Screw Thread Insert Taps
  • STI taps are oversized from standard taps to allow for the wire insert once installed. High-speed, steel intermediate (plug) lead taps cut threads to a precise dimension.

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