The SC4 Large Head Key Blank is a premium, uncut 6-pin key blank designed for Schlage C-section lock systems. Featuring an oversized head, this blank offers enhanced handling, better grip, and greater visibility — making it ideal for frequent-use keys or clients with dexterity needs.
Made from durable materials and compatible with standard key cutting machines, it’s a practical choice for locksmiths, hardware stores, and property managers handling high-volume or accessibility-focused key duplication.
🧾 Product Details
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Keyway: SC4 (Schlage C Section – 6-Pin)
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Pin Count: 6-Pin
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Material: High-Quality Brass or Nickel-Plated Brass (varies by batch)
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Head Style: Large/Broad Head
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Finish: Brass or Nickel-Plated
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Use Cases: Residential, commercial, multi-unit properties, accessible key solutions
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Sold As: Individual uncut key blank or in bulk packs
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Cutting Required: Yes – compatible with all standard key duplicating machines
🛠 Product Features
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Large Head Design – easier to grip, handle, and identify
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Compatible with Schlage C keyway 6-pin locks
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Ideal for elderly users, commercial settings, or high-use applications
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Smooth, burr-free cutting performance on standard duplicators
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Long-lasting construction for high-turnover use
🔁 Cross-Reference Keyway Information
Keyway Family: Schlage “C” Section
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SC4 = 6-pin version of SC1 (C-section base)
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Compatible with SC20 when cut for 6-pin
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Not suitable for SC1 (5-pin) cylinders unless the sixth chamber is inactive
Manufacturer Equivalents (Standard SC4):
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Ilco: 1145A
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Curtis: SC-4
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Taylor: 145A
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ESP: 1145A
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Jet: SC4
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Silca: SH5
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JMA: SLG-4
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Star: 6SH1
✅ Ideal For
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Locksmiths and key duplication specialists
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Hardware stores and mobile key cutters
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Property managers and building maintenance crews
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Accessibility-focused spare keys or frequently used keys
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High-volume rekeying and master keying setups
⚠️ Important Notes
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Ships uncut – requires cutting by a professional technician
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Oversized head may not fit in all key cabinets or organizers
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No electronic features – mechanical key blank only
