Ancor 211428 Marine Grade Female Disconnect | .250 Tab | 10-12 AWG | 25 Pack | Tinned Copper

Ancor 211428 — Marine Grade Female Disconnect | .250 Tab | 10-12 AWG | 25 Pack | Tinned Copper | UL 310

Ancor 211428 is a 25-pack of marine grade fully insulated female disconnect terminals with a .250 in. tab size for 10-12 AWG wire. Constructed of tinned copper for superior corrosion resistance in the marine environment — tinning prevents oxidation at the crimp joint, which is the most common failure point in marine electrical connections. Nylon insulation with insulation grip provides strain relief at the wire entry. Double crimp design with funnel entry ensures a secure, professional crimp on both the conductor and insulation jacket. UL 310 listed. Ancor is the industry standard for marine grade electrical terminals and wire — used by professional marine electricians and boat builders.

Confirm Wire Gauge Before Ordering

Confirm your wire gauge is 10 AWG or 12 AWG and that your mating connector uses a .250 in. tab before ordering. If you’re unsure which terminal size or gauge range you need, contact us by email, text, or live chat and we’ll help you select the correct terminal for your application.

Part Specifications

• Ancor Part Number: 211428
• Terminal Type: Female disconnect (fully insulated)
• Tab Size: .250 in.
• Wire Gauge: 10-12 AWG
• Conductor Material: Tinned copper
• Insulation: Nylon with insulation grip
• Crimp Style: Double crimp with funnel entry
• Listing: UL 310
• Quantity: 25 terminals per pack
• Vendor: Ancor

Additional Information

• Vendor: Ancor
• Part Number: 211428
• Terminal Type: Female disconnect, fully insulated
• Tab Size: .250 in.
• Wire Gauge: 10-12 AWG
• Quantity: 25 pack

Installation Notes

Use a quality ratcheting marine crimp tool sized for 10-12 AWG terminals to achieve a proper double crimp. Do not use pliers or non-ratcheting tools — an incomplete crimp is a common cause of terminal failure and electrical fires on boats. Strip wire to the correct length for the terminal barrel before crimping.

Frequently Asked Questions

Q: What is a .250 tab female disconnect terminal?
A: A .250 female disconnect terminal accepts a .250 in. (1/4 inch) male tab connector. The female terminal slides onto the male tab and can be disconnected without cutting the wire, making it ideal for components that need to be serviced or replaced — such as switches, gauges, solenoids, and relays.

Q: Why use tinned copper terminals for marine applications?
A: Tinned copper is the marine standard because the tin coating over the copper conductor resists oxidation and corrosion caused by moisture, salt air, and bilge environments. Bare copper terminals oxidize at the crimp joint, increasing resistance over time and eventually causing voltage drop, heat buildup, and terminal failure. Always use tinned copper terminals on boats.

Q: What is UL 310 listing?
A: UL 310 is the Underwriters Laboratories standard for solderless terminals for electrical wiring. UL 310 listed terminals have been tested and certified to meet minimum performance requirements for conductor retention, current-carrying capacity, and temperature rating. This is the relevant listing for marine-grade crimp terminals.

Q: What crimp tool do I need for Ancor 211428 terminals?
A: Use a marine-grade ratcheting crimp tool rated for 10-12 AWG terminals. A ratcheting tool ensures the crimp cycle is fully completed before the tool releases, producing a consistent crimp every time. Non-ratcheting plier-style tools do not reliably achieve a complete crimp on marine-grade double-crimp terminals.

Q: What AWG wire sizes does Ancor 211428 accept?
A: Ancor 211428 is sized for 10 AWG and 12 AWG wire. For smaller wire gauges (14-16 AWG or 18-22 AWG), Ancor offers the same .250 tab female disconnect terminal in different gauge ranges — contact us to confirm the correct part number for your wire size.