Screws & Fasteners – Mouser Luxembourg

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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 (EUR) 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 S-440-0ZI, RAMP THREAD S-RT440-0ZI PEM 1: 0,189 € 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	0,189 € 0,144 € 0,129 € 0,111 € View 0,101 € 0,10 € 0,083 € 0,081 €	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: 0,189 € 8.934In 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	8.934In Stock	0,189 € 0,144 € 0,129 € 0,111 € View 0,101 € 0,10 € 0,083 € 0,081 €	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: 0,224 € 39In 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	39In Stock	0,224 € 0,173 € 0,157 € 0,136 € View 0,125 € 0,117 € 0,11 € 0,104 € 0,099 €	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: 0,224 € 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	0,224 € 0,169 € 0,153 € 0,132 € View 0,122 € 0,114 € 0,108 € 0,102 € 0,097 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M5 x 0.8		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M4-0ZI, RAMP THREAD S-RTM4-0ZI PEM 1: 0,198 € 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	0,198 € 0,151 € 0,137 € 0,119 € View 0,109 € 0,102 € 0,096 € 0,091 € 0,087 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M4 x 0.7		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-M5-2ZI, RAMP THREAD SS-RTM5-2ZI PEM 1: 0,224 € 10.704In 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	10.704In Stock	0,224 € 0,162 € 0,146 € 0,127 € View 0,117 € 0,115 € 0,097 € 0,092 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M5 x 0.8		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M3-1ZI, RAMP THREAD S-RTM3-1ZI PEM 1: 0,189 € 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	0,189 € 0,141 € 0,127 € 0,111 € View 0,101 € 0,084 € 0,081 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M3 x 0.5	4.22 mm	Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-00ZI, RAMP THREAD S-RTM6-00ZI PEM 1: 0,404 € 7.655In 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	7.655In Stock	0,404 € 0,305 € 0,277 € 0,243 € View 0,224 € 0,211 € 0,20 € 0,194 € 0,187 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-0ZI, RAMP THREAD S-RT0420-0ZI PEM 1: 0,387 € 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	0,387 € 0,282 € 0,256 € 0,224 € View 0,207 € 0,206 € 0,175 € 0,172 €	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: 0,198 € 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	0,198 € 0,143 € 0,129 € 0,113 € View 0,103 € 0,101 € 0,086 € 0,082 €	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: 0,413 € 2.085In Stock 10.000Expected 12/30/2026	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	2.085In Stock 10.000Expected 12/30/2026	0,413 € 0,309 € 0,28 € 0,246 € View 0,226 € 0,213 € 0,20 € 0,196 € 0,188 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-RT032-1ZI PEM 1: 0,224 € 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	0,224 € 0,17 € 0,154 € 0,134 € View 0,123 € 0,115 € 0,109 € 0,103 € 0,098 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-632-0ZI, RAMP THREAD S-RT632-0ZI PEM 1: 0,189 € 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	0,189 € 0,142 € 0,128 € 0,112 € View 0,102 € 0,098 € 0,088 € 0,085 € 0,081 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	6-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-2ZI, RAMP THREAD S-RT0420-2ZI PEM 1: 0,413 € 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	0,413 € 0,309 € 0,28 € 0,246 € View 0,226 € 0,213 € 0,202 € 0,196 € 0,188 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	1/4-20		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-1ZI, RAMP THREAD S-RTM6-1ZI PEM 1: 0,404 € 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	0,404 € 0,298 € 0,27 € 0,237 € View 0,218 € 0,206 € 0,192 € 0,188 € 0,181 €	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: 0,499 € 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	0,499 € 0,374 € 0,34 € 0,298 € View 0,274 € 0,259 € 0,245 € 0,237 € 0,229 €	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: 0,499 € 2.471In 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	2.471In Stock	0,499 € 0,374 € 0,34 € 0,298 € View 0,274 € 0,259 € 0,245 € 0,237 € 0,229 €	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: 0,181 € 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	0,181 € 0,141 € 0,127 € 0,111 € View 0,101 € 0,095 € 0,09 € 0,085 € 0,081 €	Min.: 1 Mult.: 1	Nuts	Self Clinching	6-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-RM4-2ZI, RAMP THREAD S-RTM4-2ZI PEM 1: 0,198 € 9.993Expected 11/18/2026	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 11/18/2026	0,198 € 0,143 € 0,129 € 0,112 € View 0,103 € 0,101 € 0,085 € 0,081 €	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: 0,184 € 71.000Factory 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	71.000Factory Stock Available More Info Available	0,184 €	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: 0,081 € 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	0,081 €	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: 0,087 € 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	0,087 €	Min.: 10.000 Mult.: 1.000	Nuts	Self Clinching	8-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-RM4-1ZI, RAMP THREAD S-RTM4-1ZI PEM 10.000: 0,087 € 25.000Factory Stock Available	Mfr. Part No. S-RTM4-1ZI Mouser Part No 153-S-RTM4-1ZI	PEM	Screws & Fasteners S-RM4-1ZI, RAMP THREAD Learn More about PEM rt free running locknuts	Datasheet	25.000Factory Stock Available More Info Available	0,087 €	Min.: 10.000 Mult.: 1.000	Nuts	Self Clinching	M4 x 0.7		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-0ZI, RAMP THREAD S-RTM6-0ZI PEM 10.000: 0,184 € 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	0,184 €	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: 0,099 € 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	0,099 €	Min.: 10.000 Mult.: 1.000	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled

RT™ Free-Running Locknuts

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