When you're sorting through control cables connectors for I/O wiring, the choice usually comes down to pin count, environment, termination method, and quantity. The four options here span a wide listed-price range, starting at $13.62 for a single waterproof 4-pin plug and going up to $120 for a 10-set 3-pin kit. One is a 50-piece lot of snap-in cable connectors, another is a screw-terminated 6-contact receptacle, so the real question is which type matches the job you're wiring.
Quick take
If you need one sealed 4-wire connection, the CNLINKO 4-pin female plug is the lowest-priced entry. For repetitive conduit-to-box runs, the Arlington 38AST lot gives you 50 pieces for $52.26. If you want multiple waterproof 3-pin pairs, the CNLINKO LP-16 kit covers ten mating sets at $120. And for a single screw-terminated 6-contact receptacle, the Lapp Epic sits at $50.00.
Price comparison
| Product | Listed price | Price bar |
|---|---|---|
| CNLINKO 4 Pin Power Industrial Connector Female Plug Waterproof IP67 Signal M20 | USD 13.62 | |
| Arlington Industries 38AST 3/8" Snap2 IT Connector Lot of 50 | USD 52.26 | |
| Lapp Epic 10.1710 6-Contact Screw Terminated Industrial Connector Receptacle | USD 50.00 | |
| CNLINKO LP-16 3-Pin Industrial Connector Kit - 10 Complete Sets - New | USD 120.00 |
Decision matrix
| Use case | Recommended | Why it fits |
|---|---|---|
| Single waterproof 4-wire hookup | CNLINKO 4-pin female plug | IP67, bayonet coupling, 14-12 AWG, lowest listed price |
| Bulk cable-to-box connector runs | Arlington 38AST lot | 50 pieces, snap-in design, no-tools installation |
| Multiple waterproof 3-pin connections | CNLINKO LP-16 kit | 10 complete sets, reverse-keyed, IP67 |
| One 6-contact fixed panel receptacle | Lapp Epic receptacle | 6 copper contacts, screw termination, $50.00 |
Product notes
Arlington Industries 38AST 3/8" Snap2 IT Connector Lot of 50
The Arlington Industries 38AST is a 50-piece lot of 3/8-inch Snap2 IT conduit cable connectors. It's built for cable ranging from 0.405 to 0.612 inches, with an insulated throat and a die-cast zinc body. The main appeal is speed: you snap the cable into the fitting and snap the fitting into the box without tools. For repetitive work, such as pulling MC or AC cable to a junction box, having 50 pieces on hand at $52.26 makes it a practical bulk option. The trade-off? This is a cable-to-box connector, not a multi-pin plug or waterproof coupling, so it won't handle IP-rated industrial disconnects. If your job needs a sealed connector, look to the CNLINKO options.
CNLINKO 4 Pin Power Industrial Connector Female Plug Waterproof IP67 Signal M20
At $13.62, the CNLINKO 4-pin female plug is the least expensive option here, with IP67 waterproofing and a bayonet coupling. It accepts 14-12 AWG cable, and the description lists a 20A rms rating, making it useful for signal/power circuits that need a sealed disconnect. The trade-off is on quantity: this listing is for a single plug, so a multi-point run will require multiple purchases. If you're only ganging one 4-wire connection, the price is hard to beat; for a larger system, the 10-set kit may stretch further.
CNLINKO LP-16 3-Pin Industrial Connector Kit - 10 Complete Sets - New
The CNLINKO LP-16 kit is the high-count option: 10 complete sets, or 20 pieces total, of 3-pin connectors for $120. These are IP67-rated circular connectors with a reverse-keyed design, meaning specific 3-pin sockets can be keyed to avoid accidental cross-plugging. That makes them a fit for projects with several similar-looking circuits. The description notes that the plug housings are plastic while the sockets are metal, so the kit isn't uniform in housing material. It's also the highest listed price in this group, so it makes sense when you need multiple paired connections rather than a single plug. For installers standardizing a panel with several waterproof 3-pin feeds, this kit's quantity is the clear advantage.
Lapp Epic 10.1710 6-Contact Screw Terminated Industrial Connector Receptacle
The Lapp Epic receptacle gives you six copper contacts in one housing, with screw termination for secure wiring without soldering. At $50.00, it lands in the middle of this price spread. It's a pin-style receptacle, so it's meant to accept a mating plug rather than serve as a handheld cable end. Because it's a 6-contact unit, it gives you more wires in a single connector than the 3-pin or 4-pin options, while still keeping the wiring point fixed at the panel. This is a solid choice if your design calls for a screw-terminated, multi-contact interface and you only need one receptacle.
Final recommendation by use case
- For a single waterproof 4-wire connection, start with the CNLINKO 4-pin female plug at $13.62.
- For bulk conduit and cable connector work, the Arlington 38AST lot at $52.26 gives you 50 pieces.
- For multiple waterproof 3-pin pairs, the CNLINKO LP-16 kit at $120 is the quantity play.
- For one fixed 6-contact receptacle, the Lapp Epic at $50.00 covers the middle ground.
