S-RT0420-2ZC

All Metal, RT® Free-Running Locknuts

S-RT0420-2ZC

All Metal, RT® Free-Running Locknuts

PEM® S-RT™ free-running locknuts are free-running until clamp load is induced. A modified thread angle on the loaded flank provides the vibration resistant locking feature.

  • Screw turns freely until a clamp load is applied.
  • Resistant to vibrational loosening.
  • Back side of panel is flush or sub-flush for screw installation.
  • Locking feature reusability is not affected by number of on/off cycles.
  • Uses same mounting hole and installation tooling as standard S™ nut fasteners found in PEM® Bulletin CL.

Specifications

Thread Code
RT0420
Thread Size
1/4-20
Thread Specification
Modified thread form on loaded flank. Will accept a maximum material 6g screw.
Shank Code
2
Fastener Material
Carbon Steel
Optional Finish
SC1 (5µm), Type II, yellow, Zinc plated per ASTM B633
For Use in Sheet Hardness
HRB 80 / HB 150 or less
Product Category
All Metal, RT® Free-Running Locknuts
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103686
Application Type
Aerospace, Automotive, Automotive Electronics, Commercial Vehicles, Consumer Electronics, Datacom, Electric Vehicle Chargers, Electric Vehicles, Electronics, Industrial, Manufacturing & Sheet Metal Fabrication, Marine, Medical, Renewable Energy, Telecom
Base Panel Material
Aluminum, Steel
Brand
PEM
Fastener Characteristics
Locking, Threaded Internal
Industry
Automotive, Automotive Electronics, Datacom & Telecom, Defense, Electric Vehicles, Industrial & Commercial, Medical
PEM Product Family
CL, LN
Product Type
Nuts
Technology Type
Self-Clinching
Unit (Metric/Unified)
Unified
A Shank Max
0.087in
E ± .010_in
0.44in
Hole Size in Sheet + .003 – .000_in
0.344in
Min. Dist. Hole C/L to Edge_in
0.34in
C Max._in
0.343in
Rec. Min. Sheet Thickness_in
0.09in
T ± .010_in
0.17in

Resources

Installation & Performance Data

cl-s-ss-nuts-unified
TYPE THREAD CODE SHANK CODE TEST SHEET MATERIAL INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.)
S RT0420 0 5052-H34 Aluminum 4000-7000 220 70
S RT0420 1 5052-H34 Aluminum 4000-7000 360 90
S RT0420 2 5052-H34 Aluminum 4000-7000 360 125
S RT0420 0 Cold-Rolled Steel 6000-8000 315 115
S RT0420 1 Cold-Rolled Steel 6000-8000 400 150
S RT0420 2 Cold-Rolled Steel 6000-8000 400 150
ln-s-nuts-unified
TYPE THREAD CODE SHANK CODE TEST SHEET MATERIAL INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.)
S RT0420 0 5052-H34 Aluminum 4000-7000 220 70
S RT0420 1 5052-H34 Aluminum 4000-7000 360 90
S RT0420 2 5052-H34 Aluminum 4000-7000 360 125
S RT0420 0 Cold-Rolled Steel 6000-8000 315 115
S RT0420 1 Cold-Rolled Steel 6000-8000 400 150
S RT0420 2 Cold-Rolled Steel 6000-8000 400 150

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