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Self-Piercing, Self-Clinching Tooling0 pages
February 2012
TECH SHEET
PEM® - REF / SELF-PIERCING, SELF-CLINCHING TOOLING
SUBJECT: Specialized PEMSERTER® tooling allows installation
of self-clinching nuts in one pierce/press operation.
In certain situations, PEM Type S nuts can be installed successfully without the need to pre punch a
mounting hole in a separate operation. If these criteria are met, the fastener, along with the tooling,
can create the mounting hole during the fastener installation process.
These criteria include:
•t Fastener will be installed into aluminum sheet.
•t Sheet is no harder than HB 79.7 (HRB 40).
•t Sheet must be between 1.5 - 2.0 mm (.059 - .079”) in thickness.
•t Fasteners with thread sizes 1/4-20, 5/16-18, M6,
t and M8 can be installed in this manner.
•t S nuts with a -2 shank length must be used.
•t Utilize punch and anvil specifically designed
t for this purpose.
E
•t We can provide in-die installation equipment
t for this application.
C
A
T
METRIC
UNIFIED
(Clinching profile may vary)
tt Typetttttttt
Min.
tt
ttt
Attttt
Dist. Hole
Fastener Materialt
tThreadt
ThreadtShankt (Shank)t Sheett Ct
Et
Tt
CL To
Carbon Steelt
tSizet
Codet Codet Max.tThicknesstMax.t ±.010t ±.010t Edge (1)
t.250-20t
t(1/4-20)
St
0420t
2t
.087t
.059 - .079t
.343t
.440t
.170t
.34
t.313-18t
t(5/16-18)
St
0518t
2t
.087t
.059 - .079t
.412t
.500t
.230t
.38
tt TypettttttttMin.
t Threadt
Attttt
Dist. Hole
Fastener Materialt ttt
t Size xt
ThreadtShankt(Shank)t Sheett Ct
Et
Tt
CL To
Carbon Steelt
tPitcht
Codet
Codet
Max.t
Thicknesst
Max.t
±0.25t
±0.25t
Edge (1)
t M6 x 1t
t
t M8 x 1.25t
St
M6t
2t
2.21t
1.5 - 2.0t
8.73t
11.1t
4.08t
8.6
St
M8t
2t
2.21t
1.5 - 2.0t
10.47t
12.65t
5.47t
9.7
(1)t To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
TECH SHEET
© 2012
PEM® - REF / SELF-PIERCING, SELF-CLINCHING TOOLING
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