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50mm Keyed Half Cylinder – 40/10mm Configuration

SKU:

Original price $111.18 - Original price $132.99
Original price
$111.18
$111.18 - $132.99
Current price $111.18
  • Type: 50mm Keyed Half Cylinder (40/10mm)
  • Configuration: Keyed interior / no exterior access
  • Includes: Cylinder, tool, and keys
  • Sold individually
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50mm Keyed Half Cylinder – 40/10mm (414010310)

This 50mm keyed half cylinder is designed for applications requiring keyed access from the interior only, with no exterior access. The 40/10mm configuration provides a 40mm interior side and 10mm exterior side, making it ideal for doors where security is needed on one side only.

Technical Information

  • Total Length: 50mm
  • Configuration: 40/10mm (40mm interior, 10mm exterior)
  • Type: Keyed half cylinder
  • Access: Interior keyed only, no exterior access

Includes

  • Cylinder
  • Installation tool
  • Keys

Priced and sold each.

Fill out our MPL form or call us to ensure accurate purchasing and correct fit.

Frequently Asked Questions

What does 40/10mm mean for this cylinder?

The 40/10mm configuration indicates the cylinder has a 40mm interior side and a 10mm exterior side, totaling 50mm in length.

When would I use a keyed half cylinder?

A keyed half cylinder is used when you need keyed access from one side only, typically the interior, while the exterior side has no keyway or access.

What is included with this cylinder?

This cylinder comes with the cylinder itself, an installation tool, and keys.

At mplocks.com, we strive to provide fast, reliable, and fairly priced shipping. Below you'll find our standard shipping details, important notes, and packing practices.

Standard Shipping Rates

Shipping applies to the contiguous U.S. (orders to Alaska and Hawaii require a custom quote):

  • $11.95 – USPS First Class (5–10 business days)
  • $12.95 – USPS Priority Mail (3–6 business days)
  • $19.50 – UPS Ground (2–5 business days)

📦 Rates typically cover packages up to 4 lbs. Oversized or heavier items may incur additional charges.

Processing Times

  • Most orders ship within 2–5 business days of purchase.
  • If your order is delayed, we'll notify you promptly.

Important Notes on Shipping Costs

  • Certain items may have higher shipping costs due to weight or dimensions.
  • We reserve the right to adjust shipping fees. If this applies to your order, we'll contact you for approval before proceeding.
  • If you choose not to accept revised shipping charges, we may cancel your order at our discretion.

Backorders & Billing

  • All credit cards are charged within 72 hours of purchase.
  • This includes orders that contain backordered items.

Our Packing Standards

We take great care to ensure your order arrives safely and securely.

  • Whenever possible, we use recycled paper, cardboard, and eco-friendly packaging materials.
  • Many of our products are purchased in bulk and may not include retail packaging or barcodes. In these cases, items may be repackaged in secure, plain boxes.
  • Hardware ships in retail or contractor-grade packaging when available.
  • Every item is inspected prior to shipping, and additional packing is used if needed.

Quality Guarantee

All items are brand new unless specifically noted. If something is not right, we'll work to make it right—through repair or replacement.

⚠️ Please note: shipping costs are non-refundable.

If you have questions about shipping rates, timelines, or packaging, please contact us before placing your order.

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