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Greenfield Threading 285107 spiral point tap plug, three flutes, high-speed steel TiN finish

Greenfield Threading

Greenfield Threading 285107 Spiral Point Tap Plug 3 Flutes pneumatic accessory

SKU CH-NWFJ-G7JBS

A spiral-point tap for #8-32 UNC threads with three flutes and TiN coating for longer tool life

  • Thread Size #8-32 UNC for standard fastening
  • Spiral point design pushes chips ahead for through holes
  • High Speed Steel with TiN coating resists wear
  • Three flutes balance strength and chip clearance
  • Right-hand H3 limit fits Class 2B threads

Spiral Point Tap for #8-32 UNC Threads

This CHICAGO-LATROBE spiral point tap creates #8-32 UNC internal threads in through-hole applications. It is suited for machinists and maintenance technicians cutting threads in steel or similar materials. The right-hand cut design uses three flutes to push chips ahead of the tap.

Verify Drill Size and Thread Fit Requirements

Confirm the 75 percent thread drill size of 3.40 mm matches your prepared hole before ordering. The tap conforms to a H3 thread limit and produces a 2B class of fit for standard assemblies. Ensure the 2 1/8 in overall length and 3/8 in thread length suit your workpiece thickness.

TiN Coated High Speed Steel for Extended Wear

The high speed steel body with TiN coating resists wear during repetitive threading cycles. Spiral point geometry maintains cutting efficiency by ejecting chips forward in continuous production runs. The three-flute construction distributes cutting load evenly across sustained operations.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 84% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

Does the 285107 tap arrive ready to use or are drill bits and lubricant sold separately?

The tap is supplied as a single High Speed Steel TiN-coated tool. Drill bits sized for the 75 Percent Thread Drill Size 3.40 mm and cutting fluid must be purchased separately.

How do I choose between the available thread limits and flute counts for this #8-32 UNC size?

This model is fixed at Thread Limit H3 with 3 flutes and a 3/8 in thread length; no alternative limits or flute counts are offered for this part number.

What does the H3 class 2B rating mean when cutting threads in a typical workshop?

H3 class 2B produces a standard-fit internal thread that accepts #8-32 UNC bolts with normal clearance, suitable for general fastening in steel or aluminium using the 2 1/8 in overall length tap.

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