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Online literature contains the most current information available.
PEM® 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.
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Part #

Thread Size x Pitch

A (Shank) Max.

Hole Size in Sheet + 0.08

E ± 0.25

Fastener Material

Standard Finish

Optional Finish

CAD

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SS-RTM5-0ZI N/A M5 x 0.8 N/A 0.77 mm N/A 6.35 mm N/A 8.64 mm N/A Hardened Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A N/A
SS-RTM5-1ZC N/A M5 x 0.8 N/A 0.97 mm N/A 6.35 mm N/A 8.64 mm N/A Hardened Carbon Steel N/A N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow N/A
SS-RTM5-1ZI N/A M5 x 0.8 N/A 0.97 mm N/A 6.35 mm N/A 8.64 mm N/A Hardened Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A N/A
SS-RTM5-2ZC N/A M5 x 0.8 N/A 1.38 mm N/A 6.35 mm N/A 8.64 mm N/A Hardened Carbon Steel N/A N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow N/A
SS-RTM5-2ZI N/A M5 x 0.8 N/A 1.38 mm N/A 6.35 mm N/A 8.64 mm N/A Hardened Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A N/A
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