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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 - Unified > Part # TFH-440-10ZI  
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Part # TFH-440-10ZI, Non-Flush Studs - Types TFH, TFHS - Unified


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 .020 inches. 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 .025 in.
  • Non-flush for sheets as thin as .020”.
  • 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
.112-40 (#4-40)

Thread Code
440

Length Code
10

Min. Sheet Thickness
.020 in

Hole Size in Sheet + .003 - .000
.111 in

Max. Hole in Attached Parts
.131 in

L - Length ± .015

 View
.625 in

H ± .015
.176 in

S Max.1
.070 in

T Max.
0.025 in

Min. Dist. Hole C/L to Edge
.219 in

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

Thread Specification
External, ANSI B1.1, 2A

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


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