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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Studs and Pins for Sheet Metal > Thin Sheet Studs, Non Flush – Types TFH, TFHS > Non-Flush Studs - Types TFH, TFHS - Metric > Part # TFH-M3-18ZI  

Part # TFH-M3-18ZI, Non-Flush Studs - Types TFH, TFHS - Metric

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PEM® self-clinching studs are installed by placing them in properly sized holes in the sheets and squeezing into place with any standard press. The squeezing action embeds the head of the stud into the sheet. The metal displaced by the head flows smoothly and evenly around the ribs and into the annular groove - creating a flushhead assembly and securely locking the stud into the sheet with high torque-out and pushout resistances.

TFH (non-flush) Studs are for sheets as thin as 0.51mm. They may also be used in thicker sheets where flush head studs are not required. TFH studs are installed in the sheets in the same manner as flush-head studs; however, different punches and anvils are required. When installed, the TFH stud will be securely locked into the thin sheet with ample torque-out and pushout resistances. The stud head will not be flush but will project above the sheet surface approximately 0.64mm.
  • Non-flush for sheets as thin as 0.51mm.
  • Type TFH is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 80 or less and HB (Hardness Brinell) 150 or less.
  • Type TFHS is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 70 or less and HB (Hardness Brinell) 125 or less.




 Specifications   

Thread Size x Pitch
M3 x 0.5

Thread Code
M3

Length Code
18

Min. Sheet Thickness
0.51 mm

Hole Size in Sheet + 0.08
3.0 mm

Max. Hole in Attached Parts
3.3 mm

L - Length ± 0.4

 View
18 mm

H ± 0.4
4.50 mm

S Max.1
1.80 mm

T Max.
0.64 mm

Min. Dist. Hole C/L to Edge
5.6 mm

For Use in Sheet Hardness
HRB 80 / HB 150 or less

Thread Specification
External, ASME B1.13M, 6g

Fastener Material
Heat-Treated Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier
PennEngineering® (PEM®)
1 Threads are gageable to within 2 pitches of the “S” Max. dimension. A class 3B/5H maximum material commercial nut shall pass up to the “S” Max. dimension.


 MORE IMAGES 

·  TFH_Installed



 DOWNLOADS 

PEM Bulletin FH

PEMSERTER® Tooling Selector