(248) 348-7800


Printer-Friendly VersionPrinter-friendly version

Printer-Friendly Version

Contact Us

Van F. Belknap Co., Inc.
29164 Wall Street
Wixom, MI 48393 USA
(248) 348-7800

Printer-Friendly VersionNEED A SPECIALLY

You're at the right place! Belknap is the Leader in Specialty Torque Applications. Check out our Specialty Tools Gallery for a small sampling of what we've produced for our customers over the years.


Adjustable Screwdriver

BELKNAP’S ADJUSTABLE TORQUE SCREWDRIVERS are particularly suited for high-volume use in assembly operations. A simple, cam-over design allows the tool to slip; therefore, preventing over-torque and possible damage to components. These screwdrivers offer versatility for applications that require more than one torque value and are particularly suited for the electronics industry and for instrument assembly work.

Torque settings are easily and accurately changed with a unique adjusting knob and easy-to-read window scale. Adjusting the screwdriver is simple. Just pull out the adjusting knob to unlock, turn to the desired setting, then push the knob in until it clicks.

Positive locking knob makes accidental setting changes impossible. Automatic lock in counter-clockwise direction makes fastener removal a snap.


  • Universal 1/4" hex bit holder with strong rare earth magnet.
  • Cam-over torque limiting clutch.
  • Rugged, light-weight aluminum body.
  • Automatic lock in counter-clockwise direction.
  • Accuracy ± 6% of indicated value in clockwise direction, from 20-100% of full scale.
  • Certified to the following industry specification: ASME B107.14M-1994.

Adjustable Torque Screwdrivers

Part # Torque Range Length (In.) Weight (Lb.)
In. Oz. In. Lb. cNm.
61SM 20 - 100 3.8 0.438
151SM 3 - 15 4.5 0.500
401SM 5 - 40 5.1 0.688
61NSM 10 - 80 3.8 0.438
151NSM 40 - 200 4.5 0.500
401NSM 50 - 450 5.1 0.688

Please feel free to call us for any reason (248) 348-7800. We look forward to speaking with you.

  • Enclosure Install Tool Gas Fill Door
    Assembly & Installation
    #18 Gas Fill Door Enclosure
    Install Tool
  • Torque Wrench Large Octal Nut
    Torque Wrenches
    #7 Large Octal Nut
    Torque Wrench
  • Removal Hand Hose Clamp Tool
    Hose Clamp Tools
    #8 Hand Hose Clamp
    Removal Tool
  • Handling Hook for Rear Axle
    Material Handling
    #8 Rear Axle Handling Hook
  • Crowfoot Box Offset Female Square Drive
    Crowfoot Adapters
    #2 Box Offset Female
    Square Drive Crowfoot
  • Adapter Allen Head
    Crowfoot Adapters
    #8 Allen Head Adapter
  • Slipper Torque Hand Tool T-Handle
    Torque Wrenches
    #8 T-Handle Slipper
    Torque Hand Tool
  • Fixture VIN Plate Split
    #5 VIN Plate Split Fixture
  • Tool Hand Hose Clamp
    Hose Clamp Tools
    #9 Hand Hose Clamp Tool
  • Brake Bleeder Ratcheting
    Torque Wrenches
    #18 Ratcheting Brake Bleeder
  • Square Drive Nylon Sleeve Retaining Hex Socket
    #3 Retaining Hex Socket
    with Square Drive
    and Nylon Sleeve
  • Extended Socket Ratchet Slip-Torq
    Torque Wrenches
    #1 Ratchet with Slip-Torq
    and Extended Socket
  • Spreader Pneumatic Driveshaft
    Assembly & Installation
    #12 Pneumatic Driveshaft
  • Table for Rear Axle Build-Up
    #16 Rear Axle Build-Up Table
  • Torque Wrench Glass Adjustment
    Torque Wrenches
    #5 Glass Adjustment
    Torque Wrench
© 2003-2018 Van F. BELKNAP Co., Inc. • 29164 Wall Street, Wixom, MI 48393 • CALL 248-348-7800 • FAX 248-348-9821 • EMAIL sales@belknaptools.com