Screws & Fasteners – Mouser Liechtenstein

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RT™ Free-Running Locknuts

PEM RT™ Free-Running Locknuts feature all-metal construction and are resistant to vibrational loosening. These locknuts from PEM allow the screw to turn freely until a clamp load is applied, and the modified thread angle on the loaded flank provides a vibration-resistant locking feature. The back side of the panel is flush or sub-flush for screw installation, and the locking feature reusability is not affected by the number of on/off cycles.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Thread Size	Length	Material	Plating	Screw Head
Screws & Fasteners SS-M5-2ZI, RAMP THREAD SS-RTM5-2ZI PEM 1: CHF 0.21 10’652In Stock	Mfr. Part No. SS-RTM5-2ZI Mouser Part No 153-SS-RTM5-2ZI	PEM	Screws & Fasteners SS-M5-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	10’652In Stock	CHF 0.21 CHF 0.152 CHF 0.137 CHF 0.119 View CHF 0.11 CHF 0.108 CHF 0.091 CHF 0.086	Min.: 1 Mult.: 1	Nuts	Self Clinching	M5 x 0.8		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-632-0ZI, RAMP THREAD S-RT632-0ZI PEM 1: CHF 0.177 10’994In Stock	Mfr. Part No. S-RT632-0ZI Mouser Part No 153-S-RT632-0ZI	PEM	Screws & Fasteners S-632-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	10’994In Stock	CHF 0.177 CHF 0.133 CHF 0.12 CHF 0.105 View CHF 0.095 CHF 0.092 CHF 0.082 CHF 0.08 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	6-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-0ZI, RAMP THREAD S-RT0420-0ZI PEM 1: CHF 0.362 364In Stock	Mfr. Part No. S-RT0420-0ZI Mouser Part No 153-S-RT0420-0ZI	PEM	Screws & Fasteners S-0420-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	364In Stock	CHF 0.362 CHF 0.264 CHF 0.24 CHF 0.21 View CHF 0.194 CHF 0.193 CHF 0.164 CHF 0.161	Min.: 1 Mult.: 1	Nuts	Self Clinching	1/4-20		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-832-2ZI, RAMP THREAD S-RT832-2ZI PEM 1: CHF 0.185 550In Stock	Mfr. Part No. S-RT832-2ZI Mouser Part No 153-S-RT832-2ZI	PEM	Screws & Fasteners S-832-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	550In Stock	CHF 0.185 CHF 0.134 CHF 0.121 CHF 0.106 View CHF 0.096 CHF 0.095 CHF 0.08 CHF 0.077	Min.: 1 Mult.: 1	Nuts	Self Clinching	8-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-2ZI, RAMP THREAD S-RTM6-2ZI PEM 1: CHF 0.387 1’085In Stock 10’000Expected 1/6/2027	Mfr. Part No. S-RTM6-2ZI Mouser Part No 153-S-RTM6-2ZI	PEM	Screws & Fasteners S-M6-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	1’085In Stock 10’000Expected 1/6/2027	CHF 0.387 CHF 0.289 CHF 0.262 CHF 0.23 View CHF 0.212 CHF 0.199 CHF 0.187 CHF 0.183 CHF 0.176	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-RT032-1ZI PEM 1: CHF 0.21 997In Stock	Mfr. Part No. SS-RT032-1ZI Mouser Part No 153-SS-RT032-1ZI	PEM	Screws & Fasteners Learn More about PEM rt free running locknuts	Datasheet	997In Stock	CHF 0.21 CHF 0.159 CHF 0.144 CHF 0.125 View CHF 0.115 CHF 0.108 CHF 0.102 CHF 0.096 CHF 0.092	Min.: 1 Mult.: 1	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-440-0ZI, RAMP THREAD S-RT440-0ZI PEM 1: CHF 0.177 9’373In Stock	Mfr. Part No. S-RT440-0ZI Mouser Part No 153-S-RT440-0ZI	PEM	Screws & Fasteners S-440-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	9’373In Stock	CHF 0.177 CHF 0.135 CHF 0.121 CHF 0.104 View CHF 0.095 CHF 0.094 CHF 0.078 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	4-40		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M3-2ZI, RAMP THREAD S-RTM3-2ZI PEM 1: CHF 0.177 8’926In Stock	Mfr. Part No. S-RTM3-2ZI Mouser Part No 153-S-RTM3-2ZI	PEM	Screws & Fasteners S-M3-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	8’926In Stock	CHF 0.177 CHF 0.135 CHF 0.121 CHF 0.104 View CHF 0.095 CHF 0.094 CHF 0.078 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	M3 x 0.5	4.22 mm	Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-RT032-2ZI PEM 1: CHF 0.21 29In Stock	Mfr. Part No. SS-RT032-2ZI Mouser Part No 153-SS-RT032-2ZI	PEM	Screws & Fasteners Learn More about PEM rt free running locknuts	Datasheet	29In Stock	CHF 0.21 CHF 0.162 CHF 0.147 CHF 0.127 View CHF 0.117 CHF 0.11 CHF 0.103 CHF 0.097 CHF 0.093	Min.: 1 Mult.: 1	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-M5-0ZI, RAMP THREAD SS-RTM5-0ZI PEM 1: CHF 0.21 92In Stock	Mfr. Part No. SS-RTM5-0ZI Mouser Part No 153-SS-RTM5-0ZI	PEM	Screws & Fasteners SS-M5-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	92In Stock	CHF 0.21 CHF 0.158 CHF 0.143 CHF 0.124 View CHF 0.114 CHF 0.107 CHF 0.101 CHF 0.095 CHF 0.091	Min.: 1 Mult.: 1	Nuts	Self Clinching	M5 x 0.8		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-00ZI, RAMP THREAD S-RTM6-00ZI PEM 1: CHF 0.378 6’255In Stock	Mfr. Part No. S-RTM6-00ZI Mouser Part No 153-S-RTM6-00ZI	PEM	Screws & Fasteners S-M6-00ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	6’255In Stock	CHF 0.378 CHF 0.285 CHF 0.259 CHF 0.227 View CHF 0.21 CHF 0.197 CHF 0.187 CHF 0.182 CHF 0.175	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M3-1ZI, RAMP THREAD S-RTM3-1ZI PEM 1: CHF 0.177 9’441In Stock	Mfr. Part No. S-RTM3-1ZI Mouser Part No 153-S-RTM3-1ZI	PEM	Screws & Fasteners S-M3-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	9’441In Stock	CHF 0.177 CHF 0.132 CHF 0.119 CHF 0.104 View CHF 0.095 CHF 0.079 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	M3 x 0.5	4.22 mm	Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-1ZI, RAMP THREAD S-RTM6-1ZI PEM 1: CHF 0.378 16’076In Stock	Mfr. Part No. S-RTM6-1ZI Mouser Part No 153-S-RTM6-1ZI	PEM	Screws & Fasteners S-M6-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	16’076In Stock	CHF 0.378 CHF 0.279 CHF 0.253 CHF 0.222 View CHF 0.204 CHF 0.193 CHF 0.164	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0518-1ZI, RAMP THREAD S-RT0518-1ZI PEM 1: CHF 0.467 374In Stock	Mfr. Part No. S-RT0518-1ZI Mouser Part No 153-S-RT0518-1ZI	PEM	Screws & Fasteners S-0518-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	374In Stock	CHF 0.467 CHF 0.35 CHF 0.318 CHF 0.279 View CHF 0.256 CHF 0.242 CHF 0.229 CHF 0.222 CHF 0.214	Min.: 1 Mult.: 1	Nuts	Self Clinching	5/16-18		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0518-2ZI, RAMP THREAD S-RT0518-2ZI PEM 1: CHF 0.467 2’461In Stock	Mfr. Part No. S-RT0518-2ZI Mouser Part No 153-S-RT0518-2ZI	PEM	Screws & Fasteners S-0518-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	2’461In Stock	CHF 0.467 CHF 0.35 CHF 0.318 CHF 0.279 View CHF 0.256 CHF 0.242 CHF 0.229 CHF 0.222 CHF 0.214	Min.: 1 Mult.: 1	Nuts	Self Clinching	5/16-18		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-632-2ZI, RAMP THREAD S-RT632-2ZI PEM 1: CHF 0.169 540In Stock	Mfr. Part No. S-RT632-2ZI Mouser Part No 153-S-RT632-2ZI	PEM	Screws & Fasteners S-632-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	540In Stock	CHF 0.169 CHF 0.132 CHF 0.119 CHF 0.104 View CHF 0.095 CHF 0.089 CHF 0.084 CHF 0.08 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	6-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M4-0ZI, RAMP THREAD S-RTM4-0ZI PEM 1: CHF 0.185 680In Stock	Mfr. Part No. S-RTM4-0ZI Mouser Part No 153-S-RTM4-0ZI	PEM	Screws & Fasteners S-M4-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	680In Stock	CHF 0.185 CHF 0.141 CHF 0.128 CHF 0.111 View CHF 0.102 CHF 0.095 CHF 0.09 CHF 0.085 CHF 0.081	Min.: 1 Mult.: 1	Nuts	Self Clinching	M4 x 0.7		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-2ZI, RAMP THREAD S-RT0420-2ZI PEM 1: CHF 0.387 2In Stock	Mfr. Part No. S-RT0420-2ZI Mouser Part No 153-S-RT0420-2ZI	PEM	Screws & Fasteners S-0420-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	2In Stock	CHF 0.387 CHF 0.289 CHF 0.262 CHF 0.23 View CHF 0.212 CHF 0.199 CHF 0.189 CHF 0.183 CHF 0.176	Min.: 1 Mult.: 1	Nuts	Self Clinching	1/4-20		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-RM4-2ZI, RAMP THREAD S-RTM4-2ZI PEM 1: CHF 0.185 9’993Expected 11/25/2026	Mfr. Part No. S-RTM4-2ZI Mouser Part No 153-S-RTM4-2ZI	PEM	Screws & Fasteners S-RM4-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	9’993Expected 11/25/2026	CHF 0.185 CHF 0.134 CHF 0.121 CHF 0.105 View CHF 0.096 CHF 0.095 CHF 0.08 CHF 0.076	Min.: 1 Mult.: 1	Nuts	Self Clinching	M4 x 0.7		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-1ZI, RAMP THREAD S-RT0420-1ZI PEM 10’000: CHF 0.172 66’000Factory Stock Available	Mfr. Part No. S-RT0420-1ZI Mouser Part No 153-S-RT0420-1ZI	PEM	Screws & Fasteners S-0420-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	66’000Factory Stock Available More Info Available	CHF 0.172	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	1/4-20		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-440-1ZI, RAMP THREAD S-RT440-1ZI PEM 10’000: CHF 0.076 24’950Factory Stock Available	Mfr. Part No. S-RT440-1ZI Mouser Part No 153-S-RT440-1ZI	PEM	Screws & Fasteners S-440-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	24’950Factory Stock Available More Info Available	CHF 0.076	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	4-40		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-832-1ZI, RAMP THREAD S-RT832-1ZI PEM 10’000: CHF 0.081 14’920Factory Stock Available	Mfr. Part No. S-RT832-1ZI Mouser Part No 153-S-RT832-1ZI	PEM	Screws & Fasteners S-832-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	14’920Factory Stock Available More Info Available	CHF 0.081	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	8-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-0ZI, RAMP THREAD S-RTM6-0ZI PEM 10’000: CHF 0.172 13’155Factory Stock Available	Mfr. Part No. S-RTM6-0ZI Mouser Part No 153-S-RTM6-0ZI	PEM	Screws & Fasteners S-M6-0ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	13’155Factory Stock Available More Info Available	CHF 0.172	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-RT032-0ZI PEM 10’000: CHF 0.093 93’000Factory Stock Available	Mfr. Part No. SS-RT032-0ZI Mouser Part No 153-SS-RT032-0ZI	PEM	Screws & Fasteners Learn More about PEM rt free running locknuts	Datasheet	93’000Factory Stock Available More Info Available	CHF 0.093	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-440-2ZI, RAMP THREAD S-RT440-2ZI PEM 10’000: CHF 0.076 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. S-RT440-2ZI Mouser Part No 153-S-RT440-2ZI	PEM	Screws & Fasteners S-440-2ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	Non-Stocked Lead-Time 20 Weeks	CHF 0.076	Min.: 10’000 Mult.: 1’000	Nuts	Self Clinching	4-40		Carbon Steel	Zinc	Round, Knurled

RT™ Free-Running Locknuts

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