Brand : Sonic
Sonic 1/4 Inch Adjustable Clutch Screwdriver, 1500 RPM No Load Speed (ST-4450A) - 3 Months Warranty
SKU : SI-AA-47007
MRP : ₹8969
₹6899
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Delivery By: Nov 8 - Nov 10
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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
Specification
  • 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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