N.T COPPER SLEEVE 322N
The N.T. Copper Sleeve 322N is a precision single-barrel (round) crimp sleeve manufactured in Japan by N.T. Swivel. Engineered from ductile, seamless copper tubing and finished with an electro-plated nickel coating, the 322N provides uniform compression and maximum holding power for terminal wire traces, nylon monofilament, and fluorocarbon leaders.
Key Features
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Seamless Copper Core: Soft, annealed marine-grade copper crushes consistently under crimping pliers, molding around line fibers without cracking or shearing.
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Nickel Plating (322N): Protective nickel barrier resists saltwater corrosion, oxidization, and galvanic reactions when paired with stainless steel wire or swivels.
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Precision Beveled Edges: Deburred, rounded ends eliminate sharp contact points, preventing line cuts and leader chafing during heavy sudden strikes.
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Low-Profile Single Barrel: Slim tubular design minimizes water resistance, passes through guides smoothly, and reduces rig visibility.
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Made in Japan: Produced under tight dimensional tolerances for uniform wall thickness and reliable crimp retention.
Specifications & Sizing Guide
| Size | Outer Diameter (OD) | Inner Diameter (ID) | Length | Compatible Coated Wire | Compatible Nylon Leader | Pack Qty |
| 4S | 1.5 mm | 1.0 mm | 5 mm | #42 | #7 | 30 pcs |
| 3S | 1.8 mm | 1.3 mm | 5 mm | #40 – #42 | #7 – #10 | 30 pcs |
| 2S | 2.0 mm | 1.5 mm | 8 mm | #38 – #40 | #10 – #13 | 30 pcs |
| S | 2.3 mm | 1.8 mm | 8 mm | #36 – #38 | #13 – #24 | 30 pcs |
| M | 2.5 mm | 2.0 mm | 8 mm | #34 – #36 | #24 – #30 | 30 pcs |
| L | 2.7 mm | 2.2 mm | 8 mm | #32 – #34 | #30 – #40 | 30 pcs |
(All measurements sourced from N.T. Swivel specifications. Standard retail packaging: 30 pieces/pack.)
Recommended Applications
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Wire Trace Rigging: Securing multi-strand stainless steel, nylon-coated wire, and single-strand wire for toothy pelagics (barracuda, mackerel, wahoo, and sharks).
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Mono & Fluorocarbon Connections: Terminal loops on monofilament/fluorocarbon leaders for offshore trolling, jigging, and deep-drop bottom rigs.
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Assist Hook & Lure Building: Building compact, high-strength connections on solid rings, split rings, and assist cord assemblies.