S-RTM8-2ZI

All Metal, RT® Free-Running Locknuts

S-RTM8-2ZI

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
RTM8
Thread Size
M8 x 1.25
Thread Specification
Modified thread form on loaded flank. Will accept a maximum material 6g screw.
Shank Code
2
Fastener Material
Carbon Steel
Standard Finish
Zinc plus Clear Chromate
For Use in Sheet Hardness
HRB 80 / HB 150 or less
Product Category
All Metal, RT® Free-Running Locknuts
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103687
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)
Metric
A Shank Max
2.21mm
E ± 0.25_mm
12.7mm
Hole Size in Sheet + 0.08_mm
10.49mm
Min. Dist. Hole C/L to Edge_mm
9.65mm
C Max._mm
10.47mm
Rec. Min. Sheet Thickness_mm
2.29mm
T ± 0.25_mm
5.84mm

Resources

Installation & Performance Data

cl-s-ss-nuts-metric
TYPE THREAD CODE SHANK CODE TEST SHEET MATERIAL INSTALLATION (kN) PUSHOUT (N) TORQUE-OUT (N•m)
S RTM8 1 5052-H34 Aluminum 18-32 1690 13.6
S RTM8 2 5052-H34 Aluminum 18-32 1690 18.1
S RTM8 1 Cold-Rolled Steel 27-36 1865 18.7
S RTM8 2 Cold-Rolled Steel 27-36 1865 20.3
ln-s-nuts-metric
TYPE THREAD CODE SHANK CODE TEST SHEET MATERIAL INSTALLATION (kN) PUSHOUT (N) TORQUE-OUT (N•m)
S RTM8 1 5052-H34 Aluminum 18-32 1690 13.6
S RTM8 2 5052-H34 Aluminum 18-32 1690 18.1
S RTM8 1 Cold-Rolled Steel 27-36 1865 18.7
S RTM8 2 Cold-Rolled Steel 27-36 1865 20.3

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