Roy Larkin Posted November 13, 2012 Share Posted November 13, 2012 What was/is the American A.L.A.M. thread? On 3 March 1916, 2,500 sparking plugs were supplied by Lodge to Russia at 2 shillings each. They were 2,000 'standard sparking plugs, model 'C' and 500 'American A.L.A.M. thread sparking plugs model 'CT'. Quote Link to comment Share on other sites More sharing options...
Adrian Barrell Posted November 13, 2012 Share Posted November 13, 2012 American Licensed Automobile Manufacturers, forerunner of the SAE, Society of Automotive Engineers. Their standard plug size was 7/8-18 tpi. Quote Link to comment Share on other sites More sharing options...
Roy Larkin Posted November 13, 2012 Author Share Posted November 13, 2012 Thanks. Quote Link to comment Share on other sites More sharing options...
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