BA sizes

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Sorry, I did not specifically state that

I did, however, include the page number in the image ... largely for Nigel’s benefit.

MichaelG.

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All’s well that ends well

Proof reading one’s own text is often difficult

MichaelG.

Don't think that I have any BA thread gauges, (Typical! Whit, Unified and Metric but no BA  but will tap a nut 1 BA and try the Taps. They certainly don't want to go into a M5 nut!

1 BA is 0.9 mm pitch while M5 Coarse is 0.8, so difference in both diameter and pitch!

An order for new Taps is imminent. Hand, Spiral Point, or Spiral Flute? is now the decision

Howard

As the former publisher for the University of London, I can safely write that proofreading one's own text is more than difficult.

One sees what one intended to write rather than what's on the paper

With best wishes and thanks again.

MC

Did you try comparing the Tap with an existing 1BA screw?

I recently bought a BA thread gauge on E.Bay for less than a fiver - I guess most of that was postage!

MC

Perhaps you should think about whether you want to include Serial Taps with Hand, Spiral Point and Spiral Flute?

I bought a set of M5 (or M6 - sorry forgot) serial taps in a "sale - reduced" and one of the set crumbled the first time that I used it! The supplier didn't want to know!

MC

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That makes perfect sense.

Your spinner sounds a bit like a Torque Wrench

The Nut Spinners that I bought do NOT click in that way.

I still have an eye open for a 4BA or 1/4" Nut Spinner!

With best wishes and thanks again.

MC