From:Dave Hennessey e-mail:dave-A-toyhouse.org
Subject:RE: RE: grease zerk tap size Date:Fri Dec 1 23:54:35 2017
Response to:22393
Robbie is right - 5/16-32 - totally oddball size

McMaster-Carr is your new best friend - www.mcmaster.com
Here are their taps:

2521A418 - for starting threads
2521A428 - through-hole
2521A446 - closed-end ("bottoming")

I bought a through-hole tap and a bottoming tap (about $8 each), and keep them in my toolbox. The through-hole usually does the trick, but there are a couple places on different Harleys where you might need the bottoming tap. Indian and Henderson grease fitting are the same thread!

McMaster-Carr is great. Shipping is always next-day delivery, and shipping costs are always low.

Dave


----- ORIGINAL MESSAGE FOLLOWS -----
Original H-D grease zerks are 5/16-32.
----- ORIGINAL MESSAGE FOLLOWS -----
Anyone know the correct tap size for the grease fittings? 1/4-28 is too small and 1/8 NPT is way too big. Maybe a 5/16-28 which is really non-standard

Sent from IP Address: 174.204.21.244
Lookup 174.204.21.244

Reverse Telephone Lookup