According to my "Machinery's Hdbk. 17 edition" for an external thread the major diameter is 0.4989 - 0.4924 and for an internal thread the dimensions are 0.461 - 0.470. John
From: Pete Lilja To: 7x12minilathe@... Sent: Saturday, November 10, 2012 11:48 AM Subject: [7x12minilathe] Thread Protector
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I'm planning to make a thread protector for a rifle barrel.? My reference material doesn't list the drill bit size for a 1/2" x 28 TPI thread.? Can anyone help?
