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Taper Pipe Reamers (AS PER ANSI B94.2) – Straight Flute

  • Taper pipe reamers, manufactured according to ANSI B94.2 standards, are cutting tools specifically designed to prepare holes for being tapped with American Standard Taper Pipe Taps (NPT).
  • Straight flutes are commonly used in general purpose through-hole applications and for reaming holes without interrupted cuts.
  • Spiral flutes are advantageous in clearing swarf automatically.
  • Applications ;-
    • Preparing for Tapping: Their main purpose is to ream holes prior to tapping with taper pipe taps, resulting in better quality threads.
    • Reaming Materials: Designed for use in materials that are easy to ream.
    • Machine Use: Can be utilized with machines like drill presses, screw machines, or lathes. 
Cat No N.P.T. Size Flute Length Nominal Diameter  Large End Nominal Diameter  Small End Overall Length
GPR-2109 1/8" 3/4" .362" .316" 2-1/8"
spinner
GPR-2110 1/4" 1-1/16" .472" .406" 2-7/16"
spinner
GPR-2111 3/8" 1-1/16" .606" .540" 2-9/16"
spinner
GPR-2112 1/2" 1-3/8" .751" .665" 3-1/8"
spinner
GPR-2113 3/4" 1-3/8" .962" .876" 3-1/4"
spinner
GPR-2114 1" 1-3/4" 1.212" 1.103" 3-3/4"
spinner
GPR-2115 1-1/4" 1-3/4" 1.553" 1.444" 4"
spinner
GPR-2116 1-1/2" 1-3/4" 1.793" 1.684" 4-1/4"
spinner
GPR-2117 2" 1-3/4" 2.268" 2.159" 4-1/2"
spinner
Cat No

GPR-2109, GPR-2110, GPR-2111, GPR-2112, GPR-2113, GPR-2114, GPR-2115, GPR-2116, GPR-2117

N.P.T. Size

1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"

Flute Length

3/4", 1-1/16", 1-1/16", 1-3/8", 1-3/8", 1-3/4", 1-3/4", 1-3/4", 1-3/4"

Nominal Diameter  Large End

.362", .472", .606", .751", .962", 1.212", 1.553", 1.793", 2.268"

Nominal Diameter  Small End

.316", .406", .540", .665", .876", 1.103", 1.444", 1.684", 2.159"

Overall Length

2-1/8", 2-7/16", 2-9/16", 3-1/8", 3-1/4", 3-3/4", 4", 4-1/4", 4-1/2"

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