Magnetic torque limiter 4-980-G

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Preset torque adapter set (4-980-G) for 1/4 inch bits, covering torques from 0.6 to 3.0 Nm and including a screwdriver handle with a 1/4 inch magnetic bit holder. The adapters use a click mechanism to indicate when the preset torque is reached and are designed to prevent overtightening.

Features

• Preset torques; content: see parts list; tolerance ±10% (factory certificate on request)
• Adapter outer Ø: 12 mm; adapter length: 28 mm (without shank)
• Hex shank 1/4 inch — in combination with power tools recommended max. speed 100 rpm
• 1/4 inch magnetic bit holder integrated in screwdriver handle
• Material: alloyed steel, hardness HRC 43–48
• Packed in a plastic quadro-box (91 x 43 x 15 mm); single packed
• Weight (set): 198 g

Content

• 4-981 Torque adapter 0.6 Nm
• 4-982 Torque adapter 0.9 Nm
• 4-983 Torque adapter 1.2 Nm
• 4-984 Torque adapter 1.4 Nm
• 4-985 Torque adapter 2.0 Nm
• 4-986 Torque adapter 3.0 Nm
• 4-107 Screwdriver handle with 1/4 inch magnetic bit holder

Area of application
Turn a 1/4 inch bit and a holder into a precise torque tool. The adapter is primarily intended for manual operation; when used with power tools, use max. 100 rpm with minimum click repetition. The audible click indicates when the preset torque is reached; the adapter prevents overtightening and does not require an additional loosening tool (locked core shaft causes approx. 30% higher torque when loosening).

Technical description
The adapters are tested according to DIN EN ISO 6789 (manually operated torque screwdriving tools) and retain a tolerance of ±10% for at least 20,000 clicks. The adapter locks the ratchet in the bushing sleeve and uses a patented system with a hollow core shaft and a damping cylinder; when applied torque exceeds the preset value the core shaft becomes inactive so continuous tension does not increase.

Specifications / technical data

• Model: 4-980-G (set, 7 pcs)
• Torque range (set): 0.6 Nm, 0.9 Nm, 1.2 Nm, 1.4 Nm, 2.0 Nm, 3.0 Nm
• Included handle: screwdriver handle with 1/4 inch magnetic bit holder (4-107)
• Shank type: 1/4 inch hex
• Adapter outer Ø: 12 mm; adapter length (without shank): 28 mm
• Material: alloyed steel, HRC 43–48
• Tolerance: ±10% (factory certificate on request)
• Standards: tested according to DIN EN ISO 6789
• Packing: plastic quadro-box 91 x 43 x 15 mm; single packing
• Weight (set): 198 g

Packing / Notes

• Individually packed in a plastic quadro-box (91 x 43 x 15 mm).
• Images similar; errors and technical changes excepted.