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

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.

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-RTM6-2ZC	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	N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow	N/A
S-RTM8-1ZI	N/A M8 x 1.25	N/A 1.38 mm	N/A 10.49 mm	N/A 12.7 mm	N/A Hardened Carbon Steel	N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless	N/A	N/A
S-RTM8-1ZC	N/A M8 x 1.25	N/A 1.38 mm	N/A 10.49 mm	N/A 12.7 mm	N/A Hardened Carbon Steel	N/A	N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow	N/A
S-RTM8-2ZI	N/A M8 x 1.25	N/A 2.21 mm	N/A 10.49 mm	N/A 12.7 mm	N/A Hardened Carbon Steel	N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless	N/A	N/A
S-RTM8-2ZC	N/A M8 x 1.25	N/A 2.21 mm	N/A 10.49 mm	N/A 12.7 mm	N/A Hardened Carbon Steel	N/A	N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow	N/A

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-RTM6-2ZC

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

N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow

N/A

S-RTM8-1ZI

N/A M8 x 1.25

N/A 1.38 mm

N/A 10.49 mm

N/A 12.7 mm

N/A Hardened Carbon Steel

N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

N/A

S-RTM8-1ZC

N/A M8 x 1.25

N/A 1.38 mm

N/A 10.49 mm

N/A 12.7 mm

N/A Hardened Carbon Steel

N/A

N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow

N/A

S-RTM8-2ZI

N/A M8 x 1.25

N/A 2.21 mm

N/A 10.49 mm

N/A 12.7 mm

N/A Hardened Carbon Steel

N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

N/A

S-RTM8-2ZC

N/A M8 x 1.25

N/A 2.21 mm

N/A 10.49 mm

N/A 12.7 mm

N/A Hardened Carbon Steel

N/A

N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow

N/A

Email ^*
First Name ^*
Last Name ^*
Company ^*
Country ^*
Zip/Postal Code ^*
Phone Number ^*
City ^*
User Information	How is your information being used? View Privacy Policy
I agree to the terms of the Privacy Policy ^*