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Online literature contains the most current information available.
Unit of Measure

Thread Size

N/A .086-56 (#2-56)

Thread Code

N/A 256

Length Code

N/A 687
Style1 N/A #3

Min. Sheet Thickness

N/A .025 in

Hole Size in Sheet + .003 - .000

N/A .166 in

C + .000 - .005

N/A .165 in TSO4_Dwgs.jpg

F - Min. Thread Depth

N/A .200 in

H - Nom.

N/A .187 in
L - Length ± .0032 N/A .687 in

Min. Dist. Hole C/L to Edge

N/A .23 in
For Use in Sheet Hardness3 N/A HRB 88 / HB 183 or Less

Thread Specification

N/A Internal, ANSI B1.1, 2B

Fastener Material

N/A Heat treated 400 Series Stainless Steel

Standard Finish

N/A Passivated and/or tested per ASTM A380
  • 1 Style #1 - Thru-threaded.
    Style #2 - Screw might not pass through unthreaded end. Tapped to minimum full thread depth shown. Incomplete threads on tap may allow screw to pass through.
    Style #3 - Blind.
  • 2 Available in other lengths on special order.
  • 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.