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Bessey SG4 locking clamp, chrome vanadium steel, serrated jaws, 2.3 weight, 440 lb force

Bessey Tools

Bessey Tools SG4 hand tool clamp 440 lb force 2.3 weight

SKU CH-QBSZ-8PVYQ MPN SG4

A locking clamp delivering 440 lb clamping force with hardened chrome vanadium steel construction weighing 2.3

  • Product typeClamps
  • Surface finishHardened Chrome, Vanadium Steel
  • Main materialHardened Chrome Vanadium Steel
  • Product weight2.3
  • 440 lb clamping force for strong holding power
  • hardened chrome vanadium steel resists wear and deformation
  • 3 weight keeps the tool manageable
  • serrated non-slip jaws grip workpieces securely
  • screw mechanism with lock nuts adjusts pressure and jaw angle

Sliding-arm locking clamp

The Bessey SG4 is a sliding-arm locking clamp built from hardened chrome vanadium steel with a hardened chrome finish. It provides a clamping force of 440 lb and weighs 2.3. The screw mechanism allows adjustment of clamping pressure and jaw angle using screws with lock nuts, while the plastic-coated release lever operates the locking action.

Woodworkers needing adjustable throat depth

This clamp suits woodworkers and metalworkers who need a 4 in. capacity with 2-1/2 in. throat depth and serrated, non-slip jaws shaped for universal use. Builders requiring a deeper throat than 2-1/2 in. or a capacity beyond 4 in. should look at other models.

440 lb clamping force

The 440 lb clamping force is the single specification that decides whether this clamp can hold your workpiece securely. Verify that this force meets the demands of your glue-ups, assembly or fabrication tasks before purchasing.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $74.99
Pricier than about 81% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameBessey
Model nameSG4
Product typeClamps
Size & build
Surface finishHardened Chrome, Vanadium Steel
Main materialHardened Chrome Vanadium Steel

Questions about this item

How wide an opening does the 4-inch capacity clamp need to fit around?

The clamp opens to a 4-inch capacity with a 2-1/2-inch throat depth, so it fits around workpieces up to four inches wide while reaching two and a half inches in from the edge.

What is the correct way to set the jaw angle and pressure using the screw mechanism?

Turn the adjustment screws to set the desired jaw angle and clamping pressure, then tighten the lock nuts to secure the setting; skipping the lock nuts lets the jaws shift under load.

When should the plastic-coated release lever or serrated jaws be checked for wear?

Inspect the plastic-coated release lever for cracks and the serrated jaws for rounded teeth after heavy use; replace the clamp if the lever no longer locks positively or the jaws slip on the workpiece.

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