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Brand: Sonic
Sonic 1/4 Inch Adjustable Clutch Screwdriver, 1500 RPM No Load Speed (ST-4450A) - 3 Months Warranty
SKU: SI-AA-47007
Delivery By: Dec 23 - Dec 25 
MRP : ₹8969 ₹6899
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Delivery By: Dec 23 - Dec 25 Easy Return
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₹6899 (Including GST)
MRP : ₹8969
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Short Description
Sonic 1/4 Inch Adjustable Clutch Screwdriver
1500 RPM No Load Speed
Country of origin: Taiwan, Province of China
Specifications
- Brand: Sonic
- Weight (Approx.) : 660 gm
- Model No. : ST-4450A
- Bit Size : 1/4" Hex
- Bolt Capacity : 5/32" (4mm)
- Max. Torque : 0.85~2.5FT-LB (1.15~3.5 Nm)
- Air Inlet : 1/4" (6mm)
- Air Hose : 3/8" (10mm)
- Free Speed : 1500 RPM
- Air Consumption : 5CFM (142 L/MIN)
- Overall Length : 8-1/4" (210mm)
Note : 3 Months Warranty
Description
The ST-4450A is a compact, pneumatic screwdriver designed for precision assembly tasks. It features an adjustable-clutch mechanism and a quick-change chuck. With a ¼″ (6.35 mm) hex shank and a free speed of approximately 1,500 rpm it offers controlled driving of screws and bolts where consistent torque and repeatability are required.
Features
:- Adjustable‐clutch mechanism : Enables setting a specific torque limit, reducing over-tightening and ensuring repeatable results.
- Quick change chuck : Facilitates faster bit changes and improved productivity in assembly operations.
- ¼″ hex shank : Compatible with standard ¼″ driver bits and sockets, offering flexibility.
- Low free speed (~1,500 rpm) : Suited for screw driving rather than high-speed drilling, enabling better control.
- Lightweight and compact : Weight ~0.65 kg (1.4 lbs) and overall length ~210 mm (8¼″) give good access in tight spaces.
- Standard air-inlet and hose size : Air inlet 1/8″ PT (or 1/4″ in some listings), recommended hose I.D. 3/8″ (≈9.5 mm) to maintain adequate airflow.
- Suitable for moderate torque fastening tasks : Max torque approx. 10-30 in-lbs (≈1.13–3.4 Nm) depending on spec variant.
Applications
:- Electronics Assembly : Installing small screws in circuit boards, electronic enclosures, and appliances.
- Automotive Assembly & Repair : Fastening dashboard components, interior trim, and small automotive fasteners.
- Furniture Assembly : Controlling screw depth in wood, MDF, and composite materials.
- Appliance Manufacturing : Securing screws in home appliances like washing machines, microwaves, and refrigerators.
- Maintenance & Repair Work : Light mechanical fastening, maintenance of machinery, and assembly of small equipment.
- Production Line & Assembly Lines : Ensures consistent torque in repetitive fastening tasks, improving quality and reducing operator fatigue.
- Hobbyist & DIY Projects : For precision tasks where controlled torque is critical.
Usage
:- Connect to a clean, lubricated compressed air supply (~90 psi recommended).
- Select the appropriate torque setting on the adjustable clutch.
- Insert the correct 1/4" hex bit for your fastener.
- Position the bit on the screw head and pull the trigger. The clutch will slip when the preset torque is reached, preventing over-tightening.
- Adjust torque as needed for different screw sizes or materials.
- Disconnect from the air supply for maintenance or bit changes.
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