{"product_id":"klein-tools-impact-socket-set-660kit3-4-piece-utility-lineman-1-2-square-7-16-hex-drive-slotted-square-hex-hardware-installation-tool","title":"Klein Tools Impact Socket Set 660KIT3 4 Piece Utility Lineman (1\/2 Square 7\/16 Hex Drive Slotted Square Hex Hardware Installation Tool)","description":"\u003cdiv style=\"font-family: sans-serif; color: #333333; line-height: 1.6; max-width: 900px;\" class=\"product-description\"\u003e\n\u003ch2 style=\"color: #004b87;\"\u003e\u003ca href=\"https:\/\/www.1toptools.com\/pages\/klein-tools\" title=\"Link to the Klein Tools homepage.\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/KleinStacked-Black.png?v=1774018194\" alt=\"Klein promotional logo logout\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/a\u003e\u003c\/h2\u003e\n\u003ch2 style=\"color: #004b87; font-family: Arial, sans-serif;\"\u003eKlein Tools 660KIT3 4-Piece Utility Lineman Slotted Impact Socket Set\u003c\/h2\u003e\n\n\u003cp\u003eThe Klein Tools 660KIT3 4-Piece Impact Socket Set bundles the NRHDM 5-in-1 Mini Impact Socket and the 66044 3-in-1 Flip Impact Socket into a single high-torque driving kit engineered for electric utility pole line construction. Forged from impact-rated alloy steel with a protective black manganese phosphate surface finish, this 2.0 lb ASME B107.110 compliant set accommodates both 1\/2-inch square and 7\/16-inch hex quick-change drive connections on power tools. Featuring 12-point socket geometry and specialized side alignment slots, this combination allows linemen and utility technicians to service 3\/4-inch, 1-inch, and 1-1\/8-inch square hardware as well as 9\/16-inch and 3\/4-inch hex fasteners without taking off rubber safety gloves or detaching sockets from overhead impact wrenches.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #004b87;\"\u003eBest Used For:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUtility Pole Hardware \u0026amp; Eyelet Servicing:\u003c\/strong\u003e Tightening and loosening J-hooks, pole steps, eye bolts, and drive hooks using engineered side alignment slots.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot-Line Clamp \u0026amp; Overhead Fastening:\u003c\/strong\u003e Operating safely on energized distribution line structures with gloves using a compact 4.5-inch hollow shaft for reach-around clearance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare \u0026amp; Hex Bolt Drive Switching:\u003c\/strong\u003e Driving 3\/4-inch, 1-inch, and 1-1\/8-inch 4-point square nuts and 9\/16-inch or 3\/4-inch hex fasteners using high-torque 12-point socket geometry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #004b87;\"\u003eKey Performance \u0026amp; Safety Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-in-1 Mini Impact Socket (NRHDM):\u003c\/strong\u003e Features three primary square sizes (3\/4\", 1\", and 1-1\/8\") with an alignment slot and a 13\/16-inch diameter, 4.5-inch compact hollow shaft.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-in-1 Flip Impact Socket (66044):\u003c\/strong\u003e Combines 9\/16-inch and 3\/4-inch hex sizes with an eyelet hardware alignment slot into a single reversible socket unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Torque 12-Point Socket Geometry:\u003c\/strong\u003e Delivers versatile alignment angles for rapid positioning over both square fasteners and standard hex heads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlove-Friendly Hands-Free Adjustment:\u003c\/strong\u003e Engineered mechanism allows operators to transition between drive sizes aloft without removing high-voltage rubber safety gloves.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Drive Tool Compatibility:\u003c\/strong\u003e Accepts standard 1\/2-inch square drive impact wrenches and 7\/16-inch quick-change utility impact power drivers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack Manganese Phosphate Protective Finish:\u003c\/strong\u003e Industrial surface treatment provides long-lasting protection against corrosion, rust, and outdoor weathering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #004b87;\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e(1) Klein Tools NRHDM 5-in-1 Mini Slotted Square Impact Socket\u003c\/li\u003e\n  \u003cli\u003e(1) Klein Tools 66044 3-in-1 Flip Slotted Hex Impact Socket (9\/16\" x 3\/4\")\u003c\/li\u003e\n  \u003cli\u003e(1) 7\/16-Inch Quick-Change Hex Adapter Shaft\u003c\/li\u003e\n  \u003cli\u003e(1) 1\/2-Inch Square Drive Retaining Adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #004b87;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-family: Arial, sans-serif;\"\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBrand Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eKlein Tools®\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eModel Part Number OEM SKU\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e660KIT3\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTool Classification System\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e4-Piece Utility Lineman Slotted Impact Socket Kit\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCore Metallurgy Material\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eHeat-Treated Forged Impact Steel\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSurface Protective Finish\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eBlack Manganese Phosphate Corrosion-Resistant Finish\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003ePrimary Input Drive Interface\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e1\/2 inch Square Drive \u0026amp; 7\/16 inch Quick-Change Hex Shank\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eIntegrated Socket Sizes (SAE)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e3\/4 inch, 1 inch, 1-1\/8 inch Square; 9\/16 inch, 3\/4 inch Hex\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSocket Point Geometry Profiles\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e4-Point Square \u0026amp; 12-Point Universal Geometry\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eHollow Shaft Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e13\/16 inch Diameter x 4.5 inches Long (11.4 cm Reach)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eManufacturing Quality Standards\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eASME B107.110 Compliant\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSpecialized Feature Capabilities\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eSlotted Eyelet Alignment Channels \u0026amp; Glove-Friendly Quick Transitions\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eOverall Unit Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e8.0 inches L x 6.0 inches W x 4.0 inches H (20.3 x 15.2 x 10.2 cm)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eHigh-Voltage Insulated Frame\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eNo (Uninsulated - do not use on energized electrical circuits)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTotal Piece Count\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e4 Pieces (2 Multi-Sockets + 2 Drive Adapters)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #fff5f7;\"\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eAssembled Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e2.0 lb (0.9 kg)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eGlobal Trade Item Number GTIN\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e00092644652752\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"margin-top: 20px; padding: 10px; background-color: #f9f9f9; border-left: 4px solid #004b87;\"\u003e\u003cstrong\u003ePro-Tip:\u003c\/strong\u003e When installing curved eye bolts or pole steps on wooden cross-arms, position the side alignment slot directly over the eyelet loop before applying impact torque. This allows the socket body to pass over extended hardware shanks without binding or stripping threads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"KLEIN TOOLS","offers":[{"title":"Default Title","offer_id":52729586352439,"sku":"660KIT3","price":203.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/Klein_Tools_Impact_Socket_Set_660KIT3_4_Piece_Utility_Lineman_1_2_Square_7_16_Hex_Drive_Slotted_Square_Hex_Hardware_Installation_Tool.jpg?v=1785170430","url":"https:\/\/www.1toptools.com\/products\/klein-tools-impact-socket-set-660kit3-4-piece-utility-lineman-1-2-square-7-16-hex-drive-slotted-square-hex-hardware-installation-tool","provider":"1 Top Tools","version":"1.0","type":"link"}