Knob Lock Series
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Knob Lock Series

The Knob Lock Series from Boluosi includes cylindrical knob locks, tubular knob locks, and dead locks. These are intended for residential use as well as light commercial doors. Materials come in stainless steel, iron, and plastic, with a range of surface finishes—so you can match different market preferences or design styles. The series works with door thicknesses between 35 and 45mm, and it's designed to go in without much hassle while holding up well for everyday use.
Boluosi products are shipped widely to South America, Europe, and Asia. They're built to meet ANSI Grade 3 standards, which means they focus on what actually matters: practical performance, decent durability, and cost-effectiveness for basic door security.

    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock
    • Antique Copper Tubular Knob Lock

    Antique Copper Tubular Knob Lock

    Product Name Tubular Knob Lock Model 601
    Material Iron/Stainless Steel
    Color AB/AC/PB/SB/BL..etc
    Knob Diameter 53mm
    Rosette Diameter 65mm
    Structure Tubular
    Back of Latch 60-70mm (2-3/8'' or 2-3/4'')
    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:
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock
    • 772CP-ET Tubular Knob Lock

    772CP-ET Tubular Knob Lock

    Product Name Tubular Knob Lock Model 772
    Material Iron
    Color AB/AC/PB/SB/BL..etc
    Knob Diameter 51mm
    Rosette Diameter Square Rosette 65mm
    Structure Tubular
    Back of Latch 60-70mm (2-3/8'' or 2-3/4'')
    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:
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock
    • 304 Stainless Steel Integral Ball Tubular Entry Door Lock

    304 Stainless Steel Integral Ball Tubular Entry Door Lock

    Product Name Tubular Knob Lock Model 6304
    Material Iron/304 Stainless Steel
    Color AB/AC/PB/SB/BL..etc
    Knob Diameter 51mm
    Rosette Diameter 65mm
    Structure Tubular

    Back of Latch

    60-70mm (2-3/8'' or 2-3/4'')
    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 Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock
    • Tulip Type Knob - PVD Tubular Knob Lock

    Tulip Type Knob - PVD Tubular Knob Lock

    Product Name Tubular Knob Lock Model 8304
    Material Iron/304 Stainless Steel
    Color AB/AC/PB/SB/BL..etc
    Knob Diameter 46mm
    Rosette Diameter 65mm
    Structure Tubular
    Back of Latch 60-70mm (2-3/8'' or 2-3/4'')
    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:
    • 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:
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
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