American-Type Worm Drive Hose Clamp with 12.7 mm Band
A versatile worm-drive hose clamp designed for automotive, plumbing, household, garden and general industrial hose connections. The 12.7 mm perforated band provides a practical balance between clamping coverage, flexibility and installation convenience.
Stable Clamping with Flexible Diameter Adjustment
The classic worm-drive mechanism allows the clamp diameter to be adjusted gradually around the hose. Its perforated band engages with the screw thread, providing convenient installation, maintenance and replacement across a wide range of hose systems.
12.7 mm Perforated Band
The medium-width band provides broader hose coverage than narrow miniature clamps while remaining flexible around the connection.
M8 Worm-Drive Screw
The M8 screw provides controlled adjustment and allows the clamp to be installed or removed with common hand tools.
Multiple Materials and Finishes
Available in galvanized carbon steel, mixed stainless-steel configurations and full stainless-steel construction.
Wide Application Coverage
Suitable for automotive hoses, plumbing, household equipment, garden systems and industrial machinery.
Designed for Installation, Adjustment and Maintenance
The formed housing positions the worm screw in line with the perforated band, allowing the screw thread to engage the band throughout the adjustment process.
This construction supports smooth tightening and practical diameter control while maintaining a simple design suitable for high-volume industrial use.
- Uniform pressure distribution around the hose
- Straightforward installation with a screwdriver or driver
- Reusable design for maintenance and replacement
- Multiple sizes and working ranges available
- Suitable for vibration-prone hose connections
12.7 mm Band Dimensions and Screw Details
The 12.7 mm measurement refers to the width of the metal band, rather than the clamp diameter. The correct clamp size should be selected according to the outside diameter of the assembled hose.
| Parameter | Available Detail |
|---|---|
| Product Type | American-type worm-drive hose clamp |
| Band Width | 12.7 mm |
| Band Thickness | 0.70 mm galvanized steel or 0.60 mm stainless steel |
| Starting Diameter Range | Available from 16–25 mm, with additional ranges available |
| Screw Size | M8 |
| Screw Drive | Slotted or Phillips-style drive options |
| Band Structure | Perforated band for worm-thread engagement |
Final dimensions, screw style and working range should be confirmed according to the hose outside diameter and operating conditions.
Multiple Diameter Ranges and Finishes
Different working diameters can be supplied for small and medium-sized hose systems. Material and surface finish can also be selected according to corrosion exposure, appearance and purchasing requirements.
W1 to W5 Material Configurations
Material grade can be matched to cost, corrosion resistance and operating environment. Stainless-steel content increases from the general-purpose W1 configuration to the full SS316 W5 configuration.
| Material Level | Band | Screw | Housing |
|---|---|---|---|
| W1 | Galvanized carbon steel | Galvanized carbon steel | Galvanized carbon steel |
| W2 | 200/300 series stainless steel | Galvanized carbon steel | Galvanized carbon steel |
| W3 | 200/300 series stainless steel | Galvanized carbon steel | 200/300 series stainless steel |
| W4 | 200/300 series stainless steel | 200/300 series stainless steel | 200/300 series stainless steel |
| W5 | SS316 | SS316 | SS316 |
Material availability may vary according to clamp diameter, production quantity and individual order requirements.
In-Line Housing and Perforated Band Engagement
The clamp uses an in-line housing that positions the worm screw directly over the perforated band. As the screw rotates, its thread engages the band openings and moves the band through the housing.
This mechanism provides progressive diameter adjustment and allows the installer to control how tightly the band compresses the hose against the fitting.
- Formed housing supports screw alignment
- Perforated band provides positive thread engagement
- Rounded band shape follows the hose circumference
- Screw mechanism allows repeated installation and removal
Problems This Hose Clamp Helps Solve
The adjustable worm-drive design helps industrial buyers manage common hose-connection problems involving size variation, maintenance access and connection stability.
Automotive, Plumbing, Garden and Industrial Use
Clamp diameter, band material and tightening level should be selected according to hose construction, fitting geometry, operating pressure and environmental exposure.
Automotive Air and Fuel Lines
Suitable for air hoses, fuel lines, coolant connections and other small or medium-diameter automotive hose systems.
Plumbing Connections
Used to secure flexible hoses in water-transfer, drainage and general plumbing installations.
Household and Garden Equipment
Suitable for garden hoses, pumps, washing equipment and household water connections requiring adjustable fastening.
Industrial Machinery
Used on cooling lines, pneumatic hoses, lubrication systems and general equipment connections.
Download the DISLAB PRECISION Clamp Catalog
Review the wider DISLAB PRECISION product range, including worm-drive clamps, heavy-duty clamps, bridge clamps, handle clamps and other industrial fastening solutions. The complete PDF catalog is approximately 48 MB.
Frequently Asked Questions
Important details to confirm when sourcing American-type worm-drive hose clamps with a 12.7 mm band.
Does 12.7 mm refer to the hose clamp diameter?
No. The 12.7 mm dimension refers to the width of the metal band. The working diameter is a separate measurement and should be selected according to the outside diameter of the hose after it has been placed over the fitting.
What is the starting diameter range?
The product information shows a starting range of 16–25 mm. Additional diameter ranges are available for larger hose connections. The required minimum and maximum working diameter should be stated in the inquiry.
What is the difference between the 0.70 mm and 0.60 mm bands?
The galvanized steel version uses an approximately 0.70 mm band, while the stainless-steel version uses an approximately 0.60 mm band. Material grade, corrosion resistance and application conditions should be considered together rather than selecting by thickness alone.
Which material grade should be used outdoors?
Stainless-steel configurations are generally preferred when moisture or corrosion exposure is important. W4 uses 200 or 300 series stainless steel for the main components, while W5 uses SS316. The correct option depends on humidity, salt, chemicals and expected service life.
Can the clamp be reused during hose maintenance?
The screw-operated design can normally be loosened, repositioned and retightened. The band, housing and screw should be inspected for deformation, corrosion or damaged perforations before reuse.
How should the correct clamp diameter be selected?
Measure the outside diameter of the hose after it has been installed over the fitting. Choose a clamp range that places this measurement comfortably inside the stated minimum and maximum range rather than at the extreme limit.
Can DISLAB PRECISION supply custom sizes and packaging?
Diameter ranges, material combinations, surface finishes, labeling and bulk packaging can be discussed according to order quantity and application. Buyers should provide the hose diameter, material requirement, estimated quantity and packaging format.
Specify the Correct 12.7 mm Worm-Drive Clamp
Prepare the required diameter range, material level, hose application, estimated purchasing quantity and packaging requirements when requesting a quotation from DISLAB PRECISION.
Request a Hose Clamp Quotation
Tell us the clamp type, installed hose outside diameter, preferred material, required quantity, application and destination country. Our team will review the details and respond with practical specification and quotation guidance.
Need to send drawings or specifications?
Email your PDF, STEP, DWG, DXF or other reference files directly to [email protected], or send them via WhatsApp.
For CAD drawings, product photos, samples or detailed specifications, submit the form first and then email the files directly to David .