1646R Key Blank – USPS Mailbox Keyway – 10-Pack – ILCO

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The ILCO 1646R key blank is a high-quality, precision-machined blank used for duplicating keys to mailboxes, cluster box units (CBUs), and USPS-approved locking systems. Made in th e USA from nickel-plated brass, this blank delivers clean cutting, excellent durability, and compatibility with a wide range of mail and parcel lock systems. It’s a go-to solution for locksmiths and property maintenance professionals. 🔑 Key Features: Part Number: ILCO 1646R Material: Nickel-plated brass Finish: Corrosion-resistant and smooth Pack Size: 10 uncut key blanks Made In: USA Use Case: Mailbox and post office box key duplication Note: Key must be cut using a standard duplication machine 🔁 Manufacturer Cross-References: Jet: D4301 JMA: NTC-14, NTC14 Original: D4301 🏢 Compatible With Products By: USPS Auth Florence Bommer CBU (Cluster Box Units) CompX National Lock Company (NCL) Salsbury Vital 📬 Supported Key Code Ranges: 2000PS–2999PS 4000PS–4999PS ⚠️ Important Notes: Includes 10 uncut key blanks Not precut – confirm groove pattern before cutting Use real-size key drawings to match properly Show more