Drillco 19/32 Spiral Flute 1/2 Shank Nitro Construction Reamer (427N138)
Drillco 427N138 19/32 Spiral Flute 1/2 Shank Nitro Construction Reamer is engineered for heavy-duty reaming in structural steel fabrication, bridge construction, and automotive assembly. The Nitro surface treatment adds a hard, protective layer to the reamer, increasing hardness without brittleness. The black and gold finish provides maximum lubricity for smoother cutting. Its spiral flute design improves chip removal and ensures precise hole enlargement and alignment. Made from premium-grade cobalt high-speed steel HSS, it drills approximately 30% faster than standard HSS. The 135° self-centering split-point reduces walking and thrust, while the 3-flats reduced shank ensures a secure fit in drill chucks. Proudly made in the USA.
19/32" spiral flute Nitro construction reamer with 1/2" shank
Nitro surface treatment adds hardness without brittleness
Black and gold finish for maximum lubricity
Premium-grade cobalt HSS drills harder materials faster than standard HSS
135° self-centering split-point reduces walking and thrust
Spiral flute design for smooth cutting and efficient chip removal
3-flats reduced shank for secure chuck grip
Provides precise hole enlargement and alignment in structural applications
Reduces walking and improves drilling stability
Drills faster and lasts longer with cobalt HSS and Nitro surface
Prevents slippage with 3-flats shank design
Technical Specifications:
Type: Spiral Flute Nitro Construction Reamer
Shank Size: 1/2"
Flute Type: Spiral
Point Type: Tapered 135° self-centering split-point
Material: Premium Cobalt High-Speed Steel HSS
Surface Treatment: Nitro (black and gold finish)
Shank Design: 3-flats reduced shank
Applications: Structural steel fabrication bridge construction automotive assembly
Product identification
- Brand: Drillco
- Model / MPN: 427N138
