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Zorluk: OrtaWrenches

An automotive technician encounters various specialized fastening and piping tasks in a repair facility. Match each specialized wrench type to its primary design purpose and mechanical function.

  • Flare-nut wrenchEncloses five flats of a hexagonal fitting to prevent rounding soft-metal tube nuts while allowing clearance for hydraulic lines.
  • Crowfoot wrenchAttaches to a standard square-drive extension to tighten or loosen fasteners located in confined spaces where a socket cannot fit vertically.
  • Pipe wrenchGrips cylindrical, non-hexagonal stock using hardened, directional serrated jaws that pivot to bite deeper under applied load.
  • Torque wrenchApplies a precisely calibrated rotational tension to critical fasteners to meet manufacturer clamp-load specifications.

Cevap

Flare-nut wrench matches enclosing five flats of soft-metal tube fittings; Crowfoot wrench matches attaching to drive extensions for obstructed access; Pipe wrench matches gripping cylindrical stock with directional serrated jaws; Torque wrench matches applying precisely calibrated rotational tension.
Each wrench is engineered for distinct geometric constraints and material properties: flare-nut wrenches protect soft metal line fittings by maximizing surface contact, crowfoot adapters enable drive extensions to reach obstructed fasteners, pipe wrenches utilize directional serrated teeth to bite round stock, and torque wrenches ensure fasteners achieve precise clamping torque.

Adım Adım Çözüm

1
Identify the design features and specific automotive use of the flare-nut wrench.
Recognize that it surrounds five faces of a hexagonal fitting while leaving a slot for tubing clearance, protecting soft hydraulic lines.
Open-end wrenches only contact two flats and easily slip or distort soft fittings under torque.
2
Analyze the drive attachment mechanism and spatial utility of the crowfoot wrench.
Pair it with square-drive ratchets or extensions to turn fasteners in tight, low-clearance areas lacking overhead space.
Crowfoot heads provide open-end wrench access combined with the reach of standard ratchet extensions.
3
Evaluate the jaw construction and intended workpiece geometry of the pipe wrench.
Connect it to gripping cylindrical stock using serrated, self-tightening floating jaws.
Pipe wrenches are designed for round pipes and plumbing fittings, not for precision hex bolts.
4
Determine the measurement capability and engineering role of the torque wrench.
Link it to applying measured, calibrated fastener tension to prevent over-tightening or thread failure.
Precision assemblies require specific clamping forces governed by torque ratings.

Anahtar Kavram

Specialized Wrench Selection and Mechanical Functions
Tahmini Süre:1m 15s
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Wrenches

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