Value Collection JY9037094 Straight Flute Tap M45x4.5

Product Description

The VALUE COLLECTION JY9037094 is a straight flute tap designed to cut M45x4.5 metric coarse internal threads in through-holes and blind holes requiring a bottoming chamfer. Manufactured from high-speed steel (HSS) with a bright/uncoated finish, this tap is suited for threading operations where the tool must reach close to the bottom of a bore. It carries a 6H class of fit and a D9 thread limit, delivering threads within standard tolerance for metric fastener assemblies. With a 3.5625-inch thread length and a 7.3125-inch overall length, the tap handles substantial material engagement in heavy workpiece applications. Machinists and tool-and-die professionals are the primary installers.

This tap is used in machine shop, maintenance, and production environments where large-diameter metric coarse threads are required. The bottoming chamfer — typically 1 to 2 lead threads — allows threading to within a few pitches of the bottom of a blind hole, making it appropriate for fixture plates, heavy equipment frames, hydraulic manifolds, and structural assemblies that use M45x4.5 fasteners. It is run by hand or on a tapping machine with appropriate cutting fluid. Right-hand thread direction matches standard M45 metric bolt conventions.

Key Features

• M45x4.5 metric coarse thread form with 6H class of fit and D9 thread limit
• Bottoming chamfer for threading close to the bottom of blind holes
• 4 straight flutes provide rigid cutting geometry suitable for shorter-chipping materials
• High-speed steel construction for durability across a range of ferrous and non-ferrous materials
• Bright/uncoated finish — no coating buildup that could affect thread tolerance
• Right-hand thread direction; compatible with standard M45 metric fasteners

Compatibility

Designed as an OEM-style replacement or standard tooling option for applications requiring M45x4.5 metric coarse bottoming taps in machine shop, maintenance, or production settings.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping stand, or CNC tapping machine. Always apply a suitable cutting fluid for the workpiece material to extend tool life and improve thread finish. Ensure the workpiece is securely fixtured before beginning the tapping operation. Do not force the tap if resistance increases unexpectedly — back off and clear chips before continuing.