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Conduit Locknuts

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Conduit Locknuts act as an anti-vibration device preventing the cable gland or accessory from inadvertently loosening in service.

Zinc Plated Mild Steel – A cost effective locknut recommended when using nickel plated Cable Glands, should be used only in dry, low humidity conditions.

Aluminium – Recommended when installing aluminium Cable Glands to prevent the galvanic corrosion which can occur when dissimilar metals are coupled together.

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Product Selection Table

Ordering Reference (Aluminum) Ordering Reference (Galvanized / Zinc Plated Steel)NPT Thread DiameterMinimum Thickness Across Castellation 'B'Across Diameter 'A'
050NPTCLN1050NPTCLN6½”0.101.131.00
075NPTCLN1075NPTCLN6¾”0.101.391.26
100NPTCLN1100NPTCLN6
1"0.131.711.57
125NPTCLN1125NPTCLN61 ¼”0.172.071.90
150NPTCLN1150NPTCLN61 ½”0.172.362.17
200NPTCLN1200NPTCLN62"0.172.862.68
250NPTCLN1250NPTCLN62½”0.173.433.25
300NPTCLN1300NPTCLN63"0.174.113.95
350NPTCLN1350NPTCLN63 ½”0.174.694.49
400NPTCLN1400NPTCLN64"0.175.275.00
All dimension shown are in inches unless otherwise stated

Technical Illustration