At 03:26 AM 14/02/2009 -0800, simon bird wrote:
>if i recall correctly they are threaded 2BA.
>there are some tecalemit grease nipples on british ebay now for an extravagant bin #220360779798.
I have what looks like a beat-up original nipple in my 1951 Claud frame. The thread in the BB looks remarkably close to a 10-32, but it's not, although you could probably re-tap it or force a 10-32 screw in there to fill the hole. The nipple looks smaller than a standard 1/4-28 one you can buy at any auto parts store.
About a year ago, Peter Brueggeman posted here on these nipples and gave this source:
The one you want is the staight 2BA one at the bottom. These are cheaper than those Ray Etherton has on eBay, although I have to admit that Ray's look exactly like the one I have, while British Tools and Fastenets only shows stock illustrations of modern ones.