Klein Tools Impact Socket NRHDM 5-in-1 Mini Square Utility Wrench (7/16 Hex Adapter Lineman Pole Hardware Eye Bolt Hollow Shaft Fastening Steel)

Klein Tools NRHDM 5-in-1 Mini Square Lineman Impact Socket Wrench The Klein Tools NRHDM 5-in-1 mini square impact socket fastens utility pole hardware, tightens crossarm brackets, secures J-hooks, and installs hot-line clamps in confined aerial power distribution environments. Sized in a compact 4.5-inch profile weighing only 1.36 lbs, this multi-head impact accessory incorporates 3/4-inch, 1-inch, and 1-1/8-inch square socket interfaces alongside dual alignment slots to engage pole steps, drive hooks, and eye bolts. Featuring a 13/16-inch hollow pass-through barrel that clears extended bolt shanks, an impact-rated steel build certified to ASME B107.110 specifications, and a fine-tuned 7/16-inch hex ball-detent quick-change adapter, it provides electrical linemen and utility crews with glove-friendly, multi-size fastening agility. Best Used For: Utility Pole Hardware and Hot-Line Clamp Installation: Driving 3/4", 1", and 1-1/8" square nuts on utility distribution poles and transformer mountings without manual socket changeouts. Curved Eye Bolt, J-Hook, and Pole Step Alignment: Torquing specialized curved suspension hardware and lag hooks using the integrated small and large alignment drive slots. Confined Crossarm and Aerial Reach-Around Work: Navigating crowded transformer banks, congested crossarm structures, and bucket truck clearances using the compact 4.5-inch barrel. Key Performance & Safety Features Glove-Friendly Multi-Socket Sizing: Rapidly transitions between 3/4", 1", and 1-1/8" square hardware without requiring linemen to remove protective rubber high-voltage gloves. Dual Utility Alignment Slots: Machined large and small engagement slots seat and drive pole steps, eye bolts, J-hooks, and drive hooks directly under heavy impact torque. 4.5-Inch Compact Hollow Shaft: 13/16-inch inside diameter hollow core clears protruding threaded bolt ends and long all-thread rods during pole framing tasks. ASME B107.110 Impact Steel Construction: Heat-treated alloy steel structure withstands continuous high-torque cyclic shock from commercial utility impact drivers. Fine-Tuned Ball-Detent Adapter: Included 7/16-inch quick-change hex adapter features optimized ball retention to prevent socket separation and drop hazards aloft. Color-Coded Identification Lines: Distinct color bands provide instant visual distinction between square socket dimensions and slotted hardware interfaces in low light. What's Included (1) Klein Tools NRHDM 5-in-1 Mini Square Impact Socket Wrench (1) 7/16" Hex Quick-Change Impact Drive Adapter (Cat. No. NRHDA) Technical Specifications Manufacturer Klein Tools Model / Part Number NRHDM Product Classification 5-in-1 Mini Square Lineman Impact Socket Wrench Square Socket Sizes Included 3/4", 1", and 1-1/8" Square (4-Point) Hardware Alignment Features Small and Large Alignment Drive Slots (Eye Bolts, J-Hooks, Pole Steps) Drive Interface Size 7/16" Hex Quick-Change Shank & 1/2" Square Female Drive Overall Barrel Length 4.50 inches (11.4 cm / 114.3 mm) Hollow Barrel Clearance Diameter 0.8125 inches (13/16 in / 20.64 mm) Regulatory Manufacturing Standard ASME B107.110 Impact Tool Specifications Socket Body Material High-Strength Forged Impact-Grade Alloy Steel Overall Tool Dimensions (L x W x H) 4.50 in x 1.90 in x 1.90 in (11.4 cm x 4.8 cm x 4.8 cm) Total Net Weight 1.36 lbs (21.76 oz / 617.0 g) UPC Barcode 092644652721 Pro-Tip: Use the deep alignment slots when driving curved pole steps or eye bolts into pre-drilled utility poles; the slotted head locks the curved steel securely to torque hardware flush without distorting the eyelet loop.