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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.
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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

S-RTM6-00ZI N/A M6 x 1 N/A 0.89 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM3-0ZI N/A M3 x 0.5 N/A 0.77 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM4-0ZI N/A M4 x 0.7 N/A 0.77 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
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, 5µm, Colorless N/A N/A
S-RTM6-0ZI N/A M6 x 1 N/A 1.15 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM3-1ZI N/A M3 x 0.5 N/A 0.97 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM4-1ZI N/A M4 x 0.7 N/A 0.97 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A 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, 5µm, Colorless N/A N/A
S-RTM6-1ZI N/A M6 x 1 N/A 1.38 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM3-2ZI N/A M3 x 0.5 N/A 1.38 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM4-2ZI N/A M4 x 0.7 N/A 1.38 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A 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, 5µm, Colorless N/A N/A
S-RTM6-2ZI N/A M6 x 1 N/A 2.21 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A Zinc Plated, 5µm, Colorless N/A N/A
S-RTM6-00ZC N/A M6 x 1 N/A 0.89 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM3-0ZC N/A M3 x 0.5 N/A 0.77 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM4-0ZC N/A M4 x 0.7 N/A 0.77 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
SS-RTM5-0ZC 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 N/A Zinc Plated 5µm, Yellow N/A
S-RTM6-0ZC N/A M6 x 1 N/A 1.15 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM3-1ZC N/A M3 x 0.5 N/A 0.97 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM4-1ZC N/A M4 x 0.7 N/A 0.97 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow 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 5µm, Yellow N/A
S-RTM6-1ZC N/A M6 x 1 N/A 1.38 mm N/A 8.75 mm N/A 11.18 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM3-2ZC N/A M3 x 0.5 N/A 1.38 mm N/A 4.22 mm N/A 6.35 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow N/A
S-RTM4-2ZC N/A M4 x 0.7 N/A 1.38 mm N/A 5.41 mm N/A 7.87 mm N/A Hardened Carbon Steel N/A N/A Zinc Plated 5µm, Yellow 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 5µm, Yellow N/A
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