S
ELF-CLINCHING
S
TANDOFFS
Revised 406SELF-CLINCHING STANDOFFS
These standoffs, which use the proven self-clinching design,
install with a squeeze in punched or drilled round holes – and
become permanently mounted in the thin sheet.
PEM® brand thru-hole threaded standoffs (Page 5) are installed
with their heads flush with one surface of the mounting sheet.
When blind-threaded types (Page 6) are used, outer sheet
surfaces are not only flush, but closed as well. Unthreaded
standoffs (Page 7) are also available for spacing multi-panel
assemblies.
Always look
for the “One or
Types SO4 and BSO4 standoffs (Pages 3 and 4) are for
Two Groove”
installation into stainless steel sheets as thin as .040” / 1.02 trademarks to
be sure you are
mm.
getting genuine
PEM® brand
standoffs
Types TSO, TSOS, and TSOA self-clinching threaded standoffs
(Page 8) provide permanent threads in sheets as thin as .025”
/ 0.63 mm.
PEM® self-clinching standoffs are also available on special
order in non-heat treated carbon steel as type SON (thru-hole SUPPORT
threaded) or BSON (blind threaded).
THIS SHEET
Types DSO and DSOS standoffs (Page 9) are available for close-
to-edge applications.
If you require a standoff which we do not offer in this bulletin,
please contact us. We will be happy to work with you to satisfy
THRU-HOLE THREADS BLIND THREADS
your special need.
FFFooorrr ooottthhheeerrr tttyyypppeeesss ooofff PPPEEEMMM®®®® bbrraanndd ssttaannddooffffss aanndd ssppaacceerrss sseeee::
Bulletin CH PEM® Concealed-head Standoffs.
Part Number Designation
BBBuuulllllleeetttiiinnn KKK PEM® Standoffs for printed circuit boards.
BBBuuulllllleeetttiiinnn SSSKKK PEM® KEYHOLE® Standoffs. SO – 440 – 8 ZI
BBBuuulllllleeetttiiinnn SSSMMMTTT PEM® ReelFast™ SMT Spacers/Nuts.
Bulletin SSA PEM® brand SNAP-TOP® Standoffs.
Type and Thread Length Finish
Material Code Code
©Copyright 1997 PennEngineering.
SO-2 PennEngineering • www.pemnet.com SO-3Thread Length “L” +0.05 -0.13
Type Thread
Size x Code ((LLeennggtthh CCooddee iinn mmiilllliimmeetteerrss))
Pitch
M3
M3 x 0.5 SO4 3 4 6 8 10 12 14 16 18 N/A N/A N/A
3.5M3(1)
M3.5 x 0.6 M3.5
M4 x 0.7 SO4 M4 3 4 6 8 10 12 14 16 18 20 22 25
M5 x 0.8 M5
D Dimension ±0.25 None 4 8 11
SO-2 PennEngineering • www.pemnet.com SO-3
CIRTEM
Hole Size B
Min. C Min. Dist.
Thread In Sheet Counter- H
Sheet +++...000000000 Hole C/L
Code +.003 Bore Dia. Nom.
Thickness -.005 To Edge
-.000 ±.005
440 .040 .166 .125 .165 .187 .23
6440 .040 .213 .125 .212 .250 .28
632 .040 .213 .156 .212 .250 .28
8632 .050 .281 .156 .280 .312 .33
832 .050 .281 .188 .280 .312 .33
032 .050 .281 .203 .280 .312 .33
THREAD SIZE AND LENGTH SELECTION DATA
All dimensions are in inches.
DEIFINU DEIFINU DEIFINU DEIFINU
GENERAL DIMENSIONAL DATA
All dimensions are in inches.
Length “L” +.002 -.005 (Length Code in 32nds of an inch)
Thread Type Thread
Size Code
.125 .187 .250 .312 .375 .437 .500 .562 .625 .687 .750 .812 .875 .937 1.00 1.062
.112-40 440
SO4 4 6 8 10 12 14 16 18 20 22 24 N/A N/A N/A N/A N/A (#4-40) 6440(1)
.138-32 632
SO4 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34
(#6-32) 8632(1)
.164-32
832
(#8-32)
SO4 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34
.190-32
(#10-32) 032
D Dimension ±.010 None .187 .312 .437
DEIFINU
B
Min. HHoollee SSiizzee Min. Dist.
Thread Counter- C H
Sheet In Sheet Hole C/L
Code Bore Dia. -0.13 Nom.