Klein Tools Spud Wrench 3231 15/16 Inch Opening 5/8 Bolt Industrial Construction Alignment Tool (14.75 Length Forged Black Oxide Offset Steel)
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Klein Tools 3231 15/16-Inch Nominal Opening Structural Connecting Spud Wrench
The Klein Tools 3231 is an industrial structural spud wrench engineered with a 15/16-inch nominal opening for high-torque tightening of 5/8-inch bolts and utility series nuts during steel frame assembly. Precision forged in the USA from heat-treated select alloy steel, this 14.75-inch overall length hand tool incorporates an extra-large hub head to sustain heavy leverage forces without fracturing. A continuous handle taper from 7/8 inch down to 3/16 inch enables ironworkers to align misaligned bolt holes without wedging, while a 60-degree offset head angle delivers ample hand clearance against structural I-beam flanges and connection plates.
Best Used For:
- Utility Steel Frame Connecting: Fastening 5/8-inch structural bolts and utility series square or hex nuts on steel girders, trusses, and beam joints.
- Bolt Hole Alignment: Inserting the 14.75-inch continuously tapered handle into overlapping steel plate openings to pry members into concentric alignment.
- Heavy Industrial Frame Assembly: Torquing structural fasteners across commercial building construction, utility tower erection, and staging frameworks.
Key Performance & Safety Features
- Forged US Select Alloy Steel: Premium heat-treated steel construction delivers maximum tensile strength under heavy leverage loads.
- Extra-Large Hub Head Architecture: Reinforced head engineering provides superior structural integrity during high-torque turning operations.
- Continuous Non-Binding Taper Handle: Gradual 7/8-inch to 3/16-inch handle taper slides smoothly into misaligned bolt holes to align multi-layer plates.
- 60-Degree Offset Head Angle: Deep angle offset keeps hands and knuckles clear of beam flanges and obstruction plates.
- Black Oxide Protective Surface: Corrosion-resistant coating with rust-preventative finish guards against jobsite moisture and chemical exposure.
- Stamped Forging Identifiers: Stamped part number, bolt size, and opening dimensions provide quick on-site tool verification.
What's Included
- (1) Klein Tools 3231 15/16-Inch Nominal Opening Structural Spud Wrench
Technical Specifications
| Brand Manufacturer | Klein Tools® |
| Model Part Number OEM SKU | 3231 |
| Tool Classification System | American Bridge Offset Spud Wrench |
| Nominal Wrench Opening Size | 0.938 inch (15/16" / 2.4 cm) |
| Target Fastener Bolt Size | 0.625 inch (5/8" / 1.6 cm) |
| Heavy Nut Size Compatibility | 0.563 inch (9/16" / 1.4 cm) |
| Fastener Profile Compatibility | U.S. Utility Series Nuts |
| Head Offset Geometry Angle | 60 Degrees Offset |
| Handle Taper Dimensions | 0.875 inch to 0.188 inch (2.2 cm to 0.5 cm) |
| Overall Tool Length Dimension | 14.75 inches (37.5 cm) |
| Head Width Dimension | 2.25 inches (5.7 cm) |
| Overall Tool Height Dimension | 1.00 inch (2.5 cm) |
| Core Metallurgy Material | Forged Select US Alloy Steel |
| Protective Surface Finish | Black Oxide with Rust Preventative Treatment |
| Assembled Net Tool Weight | 1.3 lbs / 20.8 oz (0.6 kg) |
| High-Voltage Insulated Frame | No (Uninsulated - do not use on energized electrical circuits) |
| Country of Origin | Made in the USA |
| Global Trade Item Number GTIN | 00092644680243 |
Pro-Tip: When positioning utility steel structures, push the 3/16-inch end of the tapered handle all the way through overlapping plate holes until the shaft fills the gap, then pull down on the 14.75-inch handle to leverage the holes into concentric alignment before threading your 5/8-inch bolt into an adjacent hole.