Greenfield Threading
Greenfield Threading CHICAGO-LATROBE 328691 Straight Flute Hand Tap Taper M3x0.5 pneumatic accessory
Creates M3x0.5 metric threads with a straight-flute taper tap in high-speed steel with TiN coating
- Straight-flute design starts threads cleanly in through-holes
- High-speed steel with TiN coating resists wear during repeated tapping
- Taper chamfer eases alignment for accurate M3x0.5 threads
- 88 mm thread length suits shallow-hole applications
- 21 mm overall length fits standard tap wrenches and holders
M3x0.5 Taper Hand Tap
The CHICAGO-LATROBE 328691 is a straight-flute hand tap designed for creating M3x0.5 metric threads. It suits maintenance technicians and hobbyists who need to cut new internal threads or chase existing ones in metal workpieces.
Upgrade from worn or undersized taps
Replace a dull tap when thread quality degrades or when a previous tool left an incomplete thread depth. The jump is worth it when you require a D3 limit and 2B class of fit for consistent engagement with standard metric fasteners.
Limits of hand-tapping operation
The 49.21 mm overall length and 15.88 mm thread length restrict reach to through-holes or blind holes with adequate clearance. A 2.50 mm drill size is specified for 75 percent thread engagement; harder materials may demand slower speed and cutting fluid to avoid tap breakage.
Highlights
- Straight-flute design starts threads cleanly in through-holes
- High-speed steel with TiN coating resists wear during repeated tapping
- Taper chamfer eases alignment for accurate M3x0.5 threads
- 88 mm thread length suits shallow-hole applications
- 21 mm overall length fits standard tap wrenches and holders
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What drill size matches the 75 percent thread spec for this M3x0.5 tap?
Use a 2.50 mm drill bit to prepare the hole before tapping with this tool.
How do I start the threads correctly with the taper lead on this hand tap?
Apply steady axial pressure while turning the tap squarely; the tapered first threads will self-centre if the hole is drilled to 2.50 mm.
When should I replace this high-speed steel tap after repeated use?
Replace it when the cutting edges dull, chips clog the three flutes, or the TiN coating wears through and thread quality drops.
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