Announcement

Collapse
No announcement yet.

RFC: Brown & Sharpe clamp

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Um. Metric was legalized in 1865, and mandated for all new designs in 1986.

    Point taken about proprietary threads though -- it was very common before the SAE.

    Comment


    • #17
      If one works with old machines and "toys" you often encounter unusual screw threads. the old American National Standards were not really "standard" . with trade size numbers ranging from the now familiar #2 through #10 the old lists continued on to at least #30. These days where we can get into trouble is with the sizes closest to 1/4 " to 3/8". To add to the problem the old standards listed the familiar threads 30, 24, 20, 18, 16, 14 tpi. The following are some of the sizes to be most watchful of...

      14 - ,242 inch
      16 - ,268
      18- . 295
      20 - .321
      22- .347
      24- .374
      26 . .400

      Joe B

      Comment

      Working...
      X