PennEngineering - All Metal, RT® Free-Running Locknuts - Metric

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.

Unit of Measure

Items	S-RTM6-00ZI All Metal, RT® Free-Running Locknuts - Metric	S-RTM3-0ZI All Metal, RT® Free-Running Locknuts - Metric	S-RTM4-0ZI All Metal, RT® Free-Running Locknuts - Metric	SS-RTM5-0ZI All Metal, RT® Free-Running Locknuts - Metric	S-RTM6-0ZI All Metal, RT® Free-Running Locknuts - Metric
Description	N/A 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.
Thread Size x Pitch	N/A M6 x 1	N/A M3 x 0.5	N/A M4 x 0.7	N/A M5 x 0.8	N/A M6 x 1
Thread Code	N/A RTM6	N/A RTM3	N/A RTM4	N/A RTM5	N/A RTM6
Shank Code	N/A 0
A (Shank) Max.	N/A 0.89 mm	N/A 0.77 mm	N/A 0.77 mm	N/A 0.77 mm	N/A 1.15 mm
Rec. Min. Sheet Thickness¹	N/A 0.92 mm	N/A 0.8 mm	N/A 0.8 mm	N/A 0.8 mm	N/A 1.2 mm
Hole Size in Sheet + 0.08	N/A 8.75 mm	N/A 4.22 mm	N/A 5.41 mm	N/A 6.35 mm	N/A 8.75 mm
C Max.	N/A 8.73 mm	N/A 4.2 mm	N/A 5.38 mm	N/A 6.33 mm	N/A 8.73 mm
E ± 0.25	N/A 11.18 mm	N/A 6.35 mm	N/A 7.87 mm	N/A 8.64 mm	N/A 11.18 mm
T ± 0.25	N/A 4.08 mm	N/A 1.5 mm	N/A 2 mm	N/A 2 mm	N/A 4.08 mm
Min. Dist. Hole C/L to Edge	N/A 8.6 mm	N/A 4.8 mm	N/A 6.9 mm	N/A 7.1 mm	N/A 8.6 mm
For Use in Sheet Hardness	N/A HRB 80 / HB 150 or less
Thread Specification	N/A Modified thread form on loaded flank. Will accept a maximum material 6g screw.
Fastener Material	N/A Hardened Carbon Steel
Standard Finish	N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
Optional Finish	N/A
CAD Supplier	N/A PennEngineering® (PEM®)
¹ For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.