Product Overview
The oval cylinder with thumbturn is an oval profile lock cylinder in the Swiss and Oval Cylinders category, built for keyless egress on one side and key operation on the other. It is used by door hardware distributors, locksmiths and OEM door manufacturers on residential and commercial doors where occupants must exit without a key. The housing and plug are brass, the standard pin count is 6 active and 6 passive pins, and the cylinder follows EN 1303 with a 30 mm A and B length as the starting point.
That layout solves a specific problem: building codes and site rules often require a fast exit from the inside while the outside stays keyed. The thumbturn gives that exit without a key, and the brass body keeps the cylinder stable in daily use. Lengths from 30 mm to 80 mm on each side let one product family fit doors of different thicknesses without a custom order.
Key Features
- Thumbturn on one side: occupants open the door from inside without a key, which suits egress routes and family homes.
- Oval profile: fits the oval cylinder cutout common on European and Swiss-pattern door hardware, so no new mortise preparation is needed.
- Brass housing and plug: the two load-bearing parts are brass, which holds the pin chambers and cam seat steady through repeated cycling.
- 6 active and 6 passive pins as standard: the pin count can be ordered from 5 to 7 to match the keying level you specify.
- EN 1303 design: the cylinder is built against the EN 1303 cylinder standard, which gives specifiers a known reference for the product class.
- Optional anti-drill protection: a single anti-drill housing and a single anti-drill plug can be specified, adding hardened elements at the two points a drill attack targets.
- Five finishes: brass, polished brass, satin nickel, polished chrome and matt chrome let one cylinder line match the door hardware already on the project.
- M5 x 55 fixing screw: the standard screw is M5 x 55, with 40-80 mm screws available when the door thickness changes.
Product Specifications
| Product | Oval Cylinder with Thumbturn (Cylinder with Knob, Oval) |
|---|---|
| Standard | EN 1303 |
| Profile | Oval |
| Housing material | Brass |
| Plug material | Brass |
| Key material | Brass (optional) |
| Number of keys | 3 (optional) |
| Key type | Vertical key, dimple key |
| Active pins | 6 (5-7 optional) |
| Passive pins | 6 (5-7 optional) |
| A length | 30 mm (30-80 mm optional) |
| B length | 30 mm (30-80 mm optional) |
| L length | 60 mm (optional) |
| Fixing screw | M5 x 55 (40-80 mm optional) |
| Cam type | DIN cam (optional) |
| Anti-drill protection, housing | 1 (optional) |
| Anti-drill protection, plug | 2 (optional) |
| Anti-picking protection | None (optional) |
| Anti-bumping protection | None (optional) |
| Keying possibilities | KA, CE, MK, GMK |
| Finishes | Brass, polished brass, satin nickel, polished chrome, matt chrome |
| Modular construction | Not available |
| Anti-snap bar | Not available |
| Anti-breaking bar | Not available |
| Removable knob construction | Not available |
Configurations & Options
| A and B length | 30 mm standard on each side; 30-80 mm to order for thicker doors or offset backsets. |
|---|---|
| Pin count | 6 active and 6 passive pins standard; 5 or 7 pins when the keying system requires it. |
| Anti-drill protection | housing option 1 and plug option 2 can be added for doors exposed to attack. |
| Keying | KA, CE, MK and GMK keying systems available to match the building’s master key plan. |
| Keys | 3 keys supplied as standard, with key quantity optional. |
| Key material | brass keys standard, with key material optional. |
| Cam | DIN cam standard, with cam type optional. |
| Finish | brass, polished brass, satin nickel, polished chrome or matt chrome. |
| Fixing screw | M5 x 55 standard; 40-80 mm screws optional for door thickness. |
| Anti-picking and anti-bumping | not included as standard and available as options on request. |
Industrial Applications
- Oval cylinder with thumbturn for door hardware: hardware distributors and door assemblers fit this cylinder into oval-profile mortise locks on entrance and interior doors, where the thumbturn gives inside egress without changing the outside key schedule.
- Oval cylinder with thumbturn for residential doors: homeowners and residential contractors use it on front and back doors so the door can be opened from inside without hunting for a key, while the outside stays keyed and the brass body handles daily use.
- Oval cylinder with thumbturn for commercial doors: facility managers and shopfitters specify it on staff doors and back-of-house entrances where fire or site rules require free exit; the optional anti-drill housing and plug suit doors at street level.
- Oval cylinder with thumbturn for cabinet locks: cabinet and locker makers use the oval profile in lock bodies that accept an oval cylinder, giving keyed access outside and a thumbturn inside the cabinet or locker.
- Replacement and retrofit work: locksmiths and maintenance teams swap worn oval cylinders for this thumbturn version when the existing door already has an oval cutout, keeping the door preparation unchanged.
Key Advantages
- The thumbturn removes the key from the inside of the door, so an occupant can leave in seconds during an emergency, and the outside remains protected by the keyed side.
- Brass in both housing and plug means the pin chambers and cam seat are the same material, which keeps the cylinder tight in the door over years of cycling rather than loosening at the cam.
- Lengths from 30 mm to 80 mm on each side cover most door thicknesses from one product family, so a distributor can stock fewer SKUs and still fill orders for different doors.
- Optional anti-drill protection at the housing and plug puts hardened material where a drill attack is aimed, which matters on entrance doors at ground level.
- Five finishes let the cylinder match the lever, handle and escutcheon already specified, so the hardware package looks consistent on the finished door.
- KA, CE, MK and GMK keying is set at the factory on one production line, so a supplier China buyer can source the full keying system without splitting the order across vendors.
How to Choose the Right Configuration
| Standard 30/30 mm, 6-pin | suits most interior and exterior doors of standard thickness where the existing oval cutout is already 30 mm per side. |
|---|---|
| Extended A/B lengths 30-80 mm | for thick doors, offset backsets or doors where the cylinder must sit flush with the escutcheon. |
| Anti-drill housing and plug options | for entrance doors at street level or in buildings where physical attack is a real risk. |
| KA, CE, MK or GMK keying | KA for single doors, MK and GMK where a master key plan covers several doors or a whole building. |
| 5 or 7 pins | 5 pins for simpler keying, 7 pins where a higher pin count is specified for the key system. |
| Finish choice | satin nickel or matt chrome for modern hardware, polished brass or polished chrome for traditional doors, brass for a raw industrial look. |
Why Choose Us
We quote the oval cylinder with thumbturn price against your exact A/B lengths, pin count and keying, so the quotation matches the door schedule rather than a generic list.
As a manufacturer, we build the cylinder in our own plant and control the brass housing, plug and pin work in-house, which keeps the specification stable from order to order.
OEM and ODM work is part of normal production: your keying plan, finish and packaging marks can be set at the factory before shipment.
Spare parts and replacement cylinders are supplied from the same production runs, so a follow-up order matches the first batch.
We answer technical questions on pin counts, lengths and cam types before the order, and confirm the specification in writing.
Factory Strength
The plant machines brass housings and plugs, drills and reams pin chambers, assembles the pin stacks and fits the thumbturn and cam in-house. Cylinders are checked at the pin chamber stage and again after assembly, and each batch is keyed and cycled before packing. Export orders ship from our own dispatch, with the specification, keying plan and finish confirmed against the purchase order. The same line builds the standard 30/30 mm cylinder and the extended 30-80 mm lengths, so the process does not change when the door thickness does.
Quality Control
Incoming brass is checked for dimensions before machining, and pin chambers are gauged during production. Assembled cylinders are operated with the supplied keys and the thumbturn before final inspection, and the keying is verified against the order. Each batch is packed with its key set and marked for traceability.
- Incoming brass inspection for housing and plug stock
- In-process pin chamber and cam seat checks
- Final operation test of key side and thumbturn side
- Keying verification against the order before packing
Packaging & Delivery
Cylinders are packed with their keys and fixing screws, boxed for export and marked with the order reference. Bulk orders are consolidated into export cartons. Port, trade terms and lead time are confirmed at quotation, and the buyer supplies the delivery address, marks and any keying schedule before production starts.
- Each cylinder packed with its key set and M5 x 55 screw
- Export cartons with order and keying marks
- Shipment arranged from the factory against the confirmed order
- Lead time confirmed at order, based on length, pin count and finish
FAQ
What is an oval cylinder with thumbturn used for?
It replaces a double-key oval cylinder where one side must open without a key. The thumbturn sits on the inside of the door, and the outside stays keyed.
What does the A and B length mean on the oval thumbturn cylinder?
A is the distance from the cam centre to one end and B to the other. The standard is 30 mm each side, and 30-80 mm is available to order for thicker doors.
How many pins does the cylinder have?
The standard is 6 active and 6 passive pins. A 5-pin or 7-pin version can be ordered when the keying system requires it.
Can I get the oval cylinder with thumbturn specifications and a datasheet?
Yes. The specifications on this page cover the standard build, and we send an oval cylinder with thumbturn datasheet with the exact lengths, pin count, finish and keying for your order.
Is the cylinder EN 1303 compliant?
The cylinder is built to the EN 1303 standard. The exact classification depends on the options you order, such as anti-drill protection, and we confirm it on the quotation.
Can it be used for commercial doors and cabinet locks?
Yes. The oval cylinder with thumbturn for commercial doors suits staff and back-of-house entrances, and the same oval profile fits cabinet and locker lock bodies that accept an oval cylinder.
What is the oval cylinder with thumbturn price, and what is your MOQ?
Price depends on length, pin count, keying and finish, and we quote per order. MOQ is confirmed with the quotation for the configuration you need. The oval cylinder with thumbturn for sale is quoted per order, not from a fixed list.
Do you offer OEM keying and finishes?
Yes. KA, CE, MK and GMK keying can be set at the factory, and the cylinder is available in brass, polished brass, satin nickel, polished chrome and matt chrome.
How are the cylinders packed and shipped?
Each cylinder is packed with its keys and M5 x 55 screw, then boxed in export cartons with order marks. Shipping terms and lead time are confirmed when the order is placed.
How do I verify an oval cylinder with thumbturn supplier in China?
Ask for the datasheet with lengths, pin count, finish and keying, and confirm the EN 1303 classification on the quotation. We confirm MOQ and lead time for the configuration before the order is placed.
