Cylindrical Knob Lock
Home / Products / Knob Lock Series / Cylindrical Knob Lock

Cylindrical Knob Lock

For doors requiring a clean, dependable locking solution, the Boluosi Cylindrical Knob Lock delivers reliable performance with a robust integrated structure. It withstands the demands of everyday use with ease and is equally suited to residential doors and light commercial applications.

The center is centered on a standard circular hole cutout, making it compatible with common gate types without unnecessary complexity. The process is straightforward, yet the final assembly remains solid and secure.

With a streamlined mechanical structure, this knob lock delivers smooth operation and stable long-term service performance.

    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock
    • Stainless Steel Brushed - SS Cylindrical Knob Door Lock

    Stainless Steel Brushed - SS Cylindrical Knob Door Lock

    Product Name Cylindrical Knob Lock Model 587
    Material Iron/Stainless Steel
    Color SS/AB/AC/PB/SB/BL..etc
    Knob Diameter 53mm
    Rosette Diameter 65mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Ball Type Knob Privacy Lock For Bathroom Using
    • Ball Type Knob Privacy Lock For Bathroom Using
    • Ball Type Knob Privacy Lock For Bathroom Using
    • Ball Type Knob Privacy Lock For Bathroom Using

    Ball Type Knob Privacy Lock For Bathroom Using

    Product Name Cylindrical Knob Lock Model 890
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock
    • Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock

    Matte Nickel Brushed - MSN Cylindrical Entry Knob Lock

    Product Name Cylindrical Knob Lock Model 891
    Material Iron
    Color SN/AB/AC/PB/SB/BL..etc
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Gunmetal Black & Red Bronze — AC/BN Passage Cylindrical Knob Lock
    • Gunmetal Black & Red Bronze — AC/BN Passage Cylindrical Knob Lock

    Gunmetal Black & Red Bronze — AC/BN Passage Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 893
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Gun Black Antique Bronze - AB/BN Cylindrical Knob Lock
    • Gun Black Antique Bronze - AB/BN Cylindrical Knob Lock

    Gun Black Antique Bronze - AB/BN Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 894
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Gunmetal Black/Red Bronze - AC/BN Entry Cylindrical Knob Lock
    • Gunmetal Black/Red Bronze - AC/BN Entry Cylindrical Knob Lock

    Gunmetal Black/Red Bronze - AC/BN Entry Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 895
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Gunmetal Black & Reddish Bronze Ring Texture — AC/BN Cylindrical Knob Lock
    • Gunmetal Black & Reddish Bronze Ring Texture — AC/BN Cylindrical Knob Lock

    Gunmetal Black & Reddish Bronze Ring Texture — AC/BN Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 897
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 58mm
    Rosette Diameter 80mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock
    • Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock

    Wood Grain / Gold-tone (TM/GP) Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 5831 TW/SB
    Material Iron/Wooden/ Stainless Steel
    Color TM, TML/SS/AB/AC/PB/SB/BL..etc
    Knob Diameter 56mm (The biggest part)/51mm
    Rosette Diameter 65mm/75mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock
    • Red Bronze — AC Cylindrical Knob Lock

    Red Bronze — AC Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 578
    Material Iron/Stainless Steel
    Color SS/AB/AC/PB/SB/BL..etc
    Knob Diameter 51mm
    Rosette Diameter 65mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Red Bronze — AC 586 Cylindrical Knob Lock
    • Red Bronze — AC 586 Cylindrical Knob Lock

    Red Bronze — AC 586 Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 586
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 57mm
    Rosette Diameter 75mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock
    • Tulip Cylindrical Knob Lock

    Tulip Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 588
    Material Iron/Stainless Steel
    Color SS/AB/AC/PB/SB/BL..etc
    Knob Diameter 51mm
    Rosette Diameter 65mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
    • Red Bronze — AC 589 Cylindrical Knob Lock
    • Red Bronze — AC 589 Cylindrical Knob Lock

    Red Bronze — AC 589 Cylindrical Knob Lock

    Product Name Cylindrical Knob Lock Model 589
    Material Iron
    Color AB/BN, AC/BN, PB/BN
    Knob Diameter 57mm
    Rosette Diameter 75mm
    Structure Cylindrical
    Back of Latch 60mm
    Door Thickness 38-50mm
    Used Bedroom, Kitchen, School, Office, Home
    Lock Function Entrance(ET), Privacy(BK),Passage(PS),
    Cylinder & Keys Cylinder (Brass / Zinc); Keys (Brass / Iron)
    Packaging Color Box / Blister Box
    MOQ 1000PCS
    Delivery Time 45 Days After Receipt Of Deposit
    Payment 30% Deposit, 70% Balance Before Delivery
    Share:
About Us
Wenzhou Boluosi Hardware Co., Ltd.

Wenzhou Boluosii Hardware Co., Ltd. is an advanced door lock manufacturer that integrates research and development, production, sales and service. With over a decade of experience in lockmaking, we specialize in the manufacture of round knob locks, lever handle locks, three-bar locks, lock bodies and related hardware.

 

Guided by the corporate motto "Adorn the World, Brighten Lives", our products are well-received across major cities in China and exported to the EU, the Middle East, Japan, the United States and other regions, enjoying a high reputation among consumers for high quality, stylish designs and reliable after-sales service.

 

Adhering to a people-oriented, market-driven philosophy and keeping pace with advanced technology, we prioritize technological R&D and innovation. Backed by a team of skilled R&D personnel, experienced management and skilled production operators, we have implemented rigorous scientific management and strict quality control at every stage. Our robust lock-making capabilities and advanced production lines enable us to deliver consistent quality.

 

Guided by a commitment to quality, integrity, and continuous improvement, we focus on delivering reliable products, responsive service, and practical solutions that meet our customers' needs. We offer customized design and manufacturing services to address specific project requirements.

 

We welcome the opportunity to work with partners both domestically and internationally, and we are dedicated to earning your trust through consistent performance and fair pricing.

Certificate Of Honor
  • 240902026GZU-001 TVOC_Security
  • 240902026GZU-001_Security
News
Message Feedback
Cylindrical Knob Lock Industry knowledge