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GU Monolock Single Point Mortise Lock – 30mm Backset, 92mm PZ

GU Monolock Single Point Mortise Lock – 30mm Backset, 92mm PZ

SKU: 6-C4871-30-0-SS

  • PZ: 92mm
  • Backset: 1-3/16" (30mm)
  • Faceplate Width: 5/8" (16mm)
  • Faceplate Length: 11-1/2" (292mm)
  • Key Position: Below lever
  • Cylinder Type: Euro profile, 5-pin (not included)
  • Faceplate Ends: Radius
  • Handing: Reversible
  • Stamped: G-U 30/92 on lock case
  • Condition: Manufacturer defect – lever operation is rough, but lock functions properly
  • Note: Discontinued, limited to existing inventory – sold as is, no returns
Discontinued and no longer available
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GU 30/92 Monolock Single Point Mortise Lock (6-C4871-30-0-SS)

This GU Monolock is a single point mortise lock designed for Euro profile cylinder applications. The lock features a 30mm backset and 92mm PZ measurement, with radius-end faceplates measuring 5/8 inches (16mm) wide and 11-1/2 inches (292mm) long.

The lock operates by lifting the handle to throw the deadbolt, then turning the thumb turn or key to secure it in the locked position. The cylinder bore accepts a standard Euro profile 5-pin cylinder, which is not included with this lock.

Stamped With

  • G-U 30/92 stamped in lock case

Technical Information

  • Series: Monolock
  • Application: Single Point Lock
  • Backset: 1-3/16 inches (30mm)
  • PZ: 92mm
  • Faceplate Width: 5/8 inches (16mm)
  • Faceplate Length: 11-1/2 inches (292mm)
  • Faceplate Ends: Radius
  • Cylinder Type: Euro Profile, 5-pin (not included)
  • Key Position: Below lever
  • Handing: Reversible

Notes

  • This item has been discontinued

     

  • To change handing: Lift handle to extend deadbolt, depress slot behind latch and pull latch out, depress handle to retract deadbolt latch, rotate latch and push back in until you hear a click, then test lock
  • If the spring latch is difficult to pop out, you can unscrew the faceplate to reverse handing
  • Be sure to operate lock to verify proper function before installation
  • The spring latch should retract flush with faceplate if installed correctly
  • Cross reference: Strybuc 854-15559

 

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

Frequently Asked Questions

What does the manufacturer defect on this lock affect?

The defect causes the lever operation to feel rough, making it slightly harder to lift when disengaging the deadbolt. However, the lock itself functions properly with no malfunctions.

How do I reverse the handing on this lock?

Lift the handle to extend the deadbolt, depress the slot behind the latch and pull it out, depress the handle to retract the deadbolt latch, rotate the latch 180 degrees, push it back in until you hear a click, then test the lock.

What type of cylinder does this lock require?

This lock accepts a Euro profile 5-pin cylinder, which is not included and must be purchased separately.

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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