Threads in frame for grip screws

lugerholsterrepair · 11-20-2011, 03:54 PM

Jack, Jesus died at Calvary..How does that relate to any of these old pros who have fought etc?

hgreer2 · 11-20-2011, 04:47 PM

The Whitworth thread was the world's first standard [1], devised and specified by Joseph Whitworth in 1841. Until then, every industry had used their own screw threads. The new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increases with diameter in steps specified on a chart. The Whitworth thread system was later to be adopted as a British Standard to become British Standard Whitworth.
In the USA, BSW was replaced when steel bolts replaced iron, but was still being used for some aluminium parts as late as the 1960s and 1970s when metric based standards replaced the Imperial ones.

Harry

11-20-2011, 03:54 PM	#1
lugerholsterrepair Moderator Lifetime Forum Patron Join Date: Jun 2002 Location: Arizona/Colorado Posts: 7,775 Thanks: 4,995 Thanked 3,133 Times in 1,439 Posts	Jack, Jesus died at Calvary..How does that relate to any of these old pros who have fought etc? __________________ Jerry Burney 11491 S. Guadalupe Drive Yuma AZ 85367-6182 lugerholsterrepair@earthlink.net 928 342-7583 (CO & AZ) Year Round 719 207-3331 (cell) "For those who Fight For It, Life has a flavor the protected will never know."

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11-20-2011, 04:47 PM	#2
hgreer2 Banned Join Date: Nov 2010 Posts: 309 Thanks: 1 Thanked 29 Times in 20 Posts	The Whitworth thread was the world's first standard [1], devised and specified by Joseph Whitworth in 1841. Until then, every industry had used their own screw threads. The new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increases with diameter in steps specified on a chart. The Whitworth thread system was later to be adopted as a British Standard to become British Standard Whitworth. In the USA, BSW was replaced when steel bolts replaced iron, but was still being used for some aluminium parts as late as the 1960s and 1970s when metric based standards replaced the Imperial ones. Harry