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Cleveland C54765 straight-flute hand tap, bright uncoated HSS, 9/16-18 UNF

Cleveland

Cleveland C54765 Straight Flute Hand Tap 9/16"-18 UNF HSS

SKU CH-Q5G4-8S3DH

A straight-flute hand tap cuts 9/16"-18 UNF threads in 75 percent thread depth, 1.66 in thread length and 3.59 in overall length from high-speed steel

  • Product typeTaps
  • Cuts precise UNF threads with straight-flute design
  • 9/16"-18 size fits standard fine-thread applications
  • High-speed steel construction resists wear during hand tapping
  • 66" thread length reaches deep holes effectively
  • Bright uncoated finish suits general-purpose threading tasks

Thread cutting for 9/16"-18 UNF

This Cleveland straight-flute hand tap cuts internal threads in a 9/16"-18 UNF size. The high-speed steel body handles general-purpose tapping in steel and non-ferrous materials. A taper lead eases starting alignment by hand. The H3 limit targets a 2B class of fit for standard assemblies.

Chip clearance and cutting ease

The straight-flute geometry provides room for chips to escape during manual rotation. Bright uncoated surfaces reduce friction without added coatings. A thread length of 1.66 in and overall length of 3.59 in give sufficient reach for through-holes. The 75 percent thread drill size is 12.90 mm.

Durability in repeated hand use

High-speed steel retains hardness during extended threading sessions. The right-hand cut matches standard fastener direction. The H3 tolerance band maintains consistent pitch diameter across multiple holes. This tap is not suited for machine tapping or blind holes requiring bottoming leads.

How it compares

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

Price $23.99
Cheaper than about 57% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How do I install the 9/16"-18 UNF straight flute tap and what step is often missed?

Drill a 12.90 mm hole for 75 percent thread depth, then run the taper tap straight with steady pressure; the step often missed is using cutting fluid to prevent chip welding in the 1.66 in thread length.

What maintenance or replacement will this HSS tap need later?

The bright uncoated high-speed steel cutting edges will dull over time; resharpen the straight flutes or replace the tap once thread gauging shows the H3 limit exceeding 2B class of fit.

What limit appears first during sustained threading with this 3.59 in tap?

Chip evacuation in the straight flutes becomes the limiting factor during sustained use, especially at full 1.66 in depth, causing torque rise and potential tap breakage if chips are not cleared frequently.

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