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Unit of Measure

Thread Size x Pitch

 M2.5 x 0.45

Thread Code

 M25

Length Code

 1600
Style1 #3
Min. Sheet Thickness2 0.63 mm

Hole Size in Sheet + 0.08

 4.22 mm

C - 0.13

 4.2 mm
TSO4_Dwgs.jpg

F - Min. Thread Depth

 5.2 mm

H - Nom.

 4.8 mm
L - Length ± 0.083 16 mm

Min. Dist. Hole C/L to Edge

 5.8 mm
For Use in Sheet Hardness4 HRB 88 / HB 183 or Less

Thread Specification

 Internal, ASME B1.13M, 6H

Fastener Material

 Heat treated 400 Series Stainless Steel

Standard Finish

 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 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 3 Available in other lengths on special order.
  • 4 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.