Screws & Fasteners – Mouser Switzerland

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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 S-M3-1ZI, RAMP THREAD S-RTM3-1ZI PEM 1: 0.177 CHF 9 241In 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 241In Stock	0.177 CHF 0.132 CHF 0.119 CHF 0.104 CHF View 0.095 CHF 0.079 CHF 0.076 CHF	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: 0.378 CHF 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	0.378 CHF 0.285 CHF 0.259 CHF 0.227 CHF View 0.21 CHF 0.197 CHF 0.187 CHF 0.182 CHF 0.175 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-440-0ZI, RAMP THREAD S-RT440-0ZI PEM 1: 0.177 CHF 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	0.177 CHF 0.135 CHF 0.121 CHF 0.104 CHF View 0.095 CHF 0.094 CHF 0.078 CHF 0.076 CHF	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: 0.177 CHF 8 726In 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 726In Stock	0.177 CHF 0.135 CHF 0.121 CHF 0.104 CHF View 0.095 CHF 0.094 CHF 0.078 CHF 0.076 CHF	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: 0.21 CHF 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	0.21 CHF 0.162 CHF 0.147 CHF 0.127 CHF View 0.117 CHF 0.11 CHF 0.103 CHF 0.097 CHF 0.093 CHF	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: 0.21 CHF 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	0.21 CHF 0.158 CHF 0.143 CHF 0.124 CHF View 0.114 CHF 0.107 CHF 0.101 CHF 0.095 CHF 0.091 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	M5 x 0.8		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-0ZI, RAMP THREAD S-RT0420-0ZI PEM 1: 0.362 CHF 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	0.362 CHF 0.264 CHF 0.24 CHF 0.21 CHF View 0.194 CHF 0.193 CHF 0.164 CHF 0.161 CHF	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: 0.185 CHF 450In 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	450In Stock	0.185 CHF 0.134 CHF 0.121 CHF 0.106 CHF View 0.096 CHF 0.095 CHF 0.08 CHF 0.077 CHF	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: 0.387 CHF 975In Stock 10 000Expected 06/01/2027	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	975In Stock 10 000Expected 06/01/2027	0.387 CHF 0.289 CHF 0.262 CHF 0.23 CHF View 0.212 CHF 0.199 CHF 0.187 CHF 0.183 CHF 0.176 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-RT032-1ZI PEM 1: 0.21 CHF 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	0.21 CHF 0.159 CHF 0.144 CHF 0.125 CHF View 0.115 CHF 0.108 CHF 0.102 CHF 0.096 CHF 0.092 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	10-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners SS-M5-2ZI, RAMP THREAD SS-RTM5-2ZI PEM 1: 0.217 CHF 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	0.217 CHF 0.16 CHF 0.145 CHF 0.125 CHF View 0.115 CHF 0.113 CHF 0.095 CHF 0.091 CHF	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: 0.177 CHF 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	0.177 CHF 0.133 CHF 0.12 CHF 0.105 CHF View 0.095 CHF 0.092 CHF 0.082 CHF 0.08 CHF 0.076 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	6-32		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M6-1ZI, RAMP THREAD S-RTM6-1ZI PEM 1: 0.378 CHF 15 666In 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	15 666In Stock	0.378 CHF 0.279 CHF 0.253 CHF 0.222 CHF View 0.204 CHF 0.193 CHF 0.164 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	M6 x 1		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0420-2ZI, RAMP THREAD S-RT0420-2ZI PEM 1: 0.387 CHF 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	0.387 CHF 0.289 CHF 0.262 CHF 0.23 CHF View 0.212 CHF 0.199 CHF 0.189 CHF 0.183 CHF 0.176 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	1/4-20		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-M4-0ZI, RAMP THREAD S-RTM4-0ZI PEM 1: 0.185 CHF 380In 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	380In Stock	0.185 CHF 0.141 CHF 0.128 CHF 0.111 CHF View 0.102 CHF 0.095 CHF 0.09 CHF 0.085 CHF 0.081 CHF	Min.: 1 Mult.: 1	Nuts	Self Clinching	M4 x 0.7		Carbon Steel	Zinc	Round, Knurled
Screws & Fasteners S-0518-1ZI, RAMP THREAD S-RT0518-1ZI PEM 1: 0.467 CHF 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	0.467 CHF 0.35 CHF 0.318 CHF 0.279 CHF View 0.256 CHF 0.242 CHF 0.229 CHF 0.222 CHF 0.214 CHF	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: 0.467 CHF 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	0.467 CHF 0.35 CHF 0.318 CHF 0.279 CHF View 0.256 CHF 0.242 CHF 0.229 CHF 0.222 CHF 0.214 CHF	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: 0.169 CHF 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	0.169 CHF 0.132 CHF 0.119 CHF 0.104 CHF View 0.095 CHF 0.089 CHF 0.084 CHF 0.08 CHF 0.076 CHF	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: 0.185 CHF 9 993Expected 25/11/2026	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 25/11/2026	0.185 CHF 0.134 CHF 0.121 CHF 0.105 CHF View 0.096 CHF 0.095 CHF 0.08 CHF 0.076 CHF	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: 0.172 CHF 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	0.172 CHF	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: 0.076 CHF 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	0.076 CHF	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: 0.081 CHF 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	0.081 CHF	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: 0.172 CHF 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	0.172 CHF	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: 0.093 CHF 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	0.093 CHF	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: 0.076 CHF 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	0.076 CHF	Min.: 10 000 Mult.: 1 000	Nuts	Self Clinching	4-40		Carbon Steel	Zinc	Round, Knurled

RT™ Free-Running Locknuts

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RT™ Free-Running Locknuts

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