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Low-Displacement Head Studs - Types FHL, FHLS - Unified
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Flush-head, Low Displacement Studs – Types FHL, FHLS
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Low-Displacement Head Studs - Types FHL, FHLS - Unified
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Part # FHLS-440-16
Part # FHLS-440-16, Low-Displacement Head Studs - Types FHL, FHLS - 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.
FHL (flush low-displacement head) Studs
install closer to the edge of a sheet than PEM Types FH/FHS studs without causing that edge to bulge.
Installs closer to the edge of a sheet than PEM Type FH/FHS studs without causing that edge to bulge.
Flush-head for sheet thickness .040” and greater.
Type FHL is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 80 or less and HB (Hardness Brinell) 150 or less.
Type FHLS is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 70 or less and HB (Hardness Brinell) 125 or less.
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Specifications
Thread Size
.112-40 (#4-40)
Thread Code
440
Length Code
16
Material Code
S
Min. Sheet Thickness
.040
in
Hole Size in Sheet + .003 - .000
.111
in
Max. Hole in Attached Parts
.125
in
L - Length ± .015
1.00
in
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H ± .015
.138
in
S Max.
1
.085
in
Min. Dist. Hole C/L to Edge
.124
in
For Use in Sheet Hardness
HRB 70 / HB 125 or Less
Thread Specification
External, ANSI B1.1, 2A
Fastener Material
300 Series Stainless Steel
Standard Finish
Passivated and/or tested per ASTM A380
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.
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