The ILCO 1646 key blank is a high-precision, USA-made blank designed for duplicating keys used in USPS-approved mailbox and post office box locks. Manufactured from nickel-plated brass for enhanced durability and corrosion resistance, this key is ideal for servicing CBU units, apartment mailboxes, and commercial mail centers. A trusted choice for professional locksmiths and property managers.
🔑 Key Features:
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Part Number: ILCO 1646
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Material: Nickel-plated brass
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Finish: Smooth, rust-resistant surface
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Pack Size: 10 uncut key blanks
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Use Case: Mailbox and post office box key duplication
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Made In: USA
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Note: This blank must be cut using a standard key cutting machine
🔁 Manufacturer Cross-References:
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Jet: D4300
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JMA: NTC-14D, NTC14D
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Original: D4300
🏢 Compatible With Products By:
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USPS
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Auth Florence
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Bommer
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CBU (Cluster Box Units)
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CompX
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National Lock Company (NCL)
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Salsbury
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Vital
📬 Supported Key Code Ranges:
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1000PS–1999PS
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3000PS–3999PS
⚠️ Important Notes:
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Includes 10 uncut key blanks
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Not precut – verify groove pattern before cutting
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Match to existing keys using real-size profile diagrams for accuracy
