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Proto® Super Heavy-Duty Offset Slugging Wrenches, Stanley® Products

Supplier: ORS NASCO, INC.
577-USN339 577-USN328 577-USN333 577-USN322 577-USN345 577-USN334
Heavy box walls provide greater torque transmission

  • Black oxide finish
  • Box opening
  • Forged alloy steel
  • Inch measuring system
  • Off-set handle

High strength rectangular design withstands heavy sledging. Straight handle resists springing for easier nut turning. For close quarter work where hammer or sledge is required to loosen frozen nuts or set large fasteners.

Box opening remains on fastener when wrench is struck.



Expand All / Collapse All
Head Width Overall Length Opening Size Head Thickness Offset No. of Points Supplier No. VWR Catalog Number Unit Price Quantity
4 1/8" 14 1/2" 1 11/16" 1 5/8" 45° Box Side 12 577-USN339 76190-392 Each Retrieving
4 5/8" 15 3/4" 2 13/16" 1 7/8" 45° Box Side 12 577-USN345 76190-394 Each Retrieving
2 3/8" 8 3/8" 1 3/8" 7/8" 45° Box Side 12 577-USN322 76191-336 Each Retrieving
2 3/4" 10 1/8" 1 3/4" 1 1/8" 45° Box Side 12 577-USN328 76191-338 Each Retrieving
3" 10 3/4" 2 1/16" 1 5/16" 45° Box Side 12 577-USN333 76191-340 Each Retrieving
3" 11" 2 1/8" 1 5/16" 45° Box Side 12 577-USN334 76191-342 Each Retrieving
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