{"product_id":"teknetics-8-inch-search-coil-screw-in","title":"Teknetics 8\" Search Coil (Screw-In) for Alpha, Delta, Gamma, Omega, EuroTek Pro \u0026 Fisher","description":"\u003cp\u003e\u003cstrong\u003eMost hunts happen on ordinary ground, and 8 in \/ 20 cm is the size ordinary ground rewards.\u003c\/strong\u003e This coil splits the difference the extremes cannot: deeper and wider-sweeping than the 5 in \/ 13 cm, lighter and better-mannered in trash than the 10 in \/ 25 cm and 11 in \/ 28 cm, and easy on the arm through a full day of swinging. If you keep one spare coil for a screw-in Teknetics or Fisher machine, this is the size that covers the most sites.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAt a glance:\u003c\/em\u003e genuine Teknetics 8 in \/ 20 cm search coil, part number 8COIL-7TEK, with the SCREW-IN (twist-lock) connector. One naming note up front: dealers describe this connector as screw-in on one page and screw-on on another, sometimes within the same store. It is a single twist-lock design, and we call it SCREW-IN on every surface of this page so nothing needs decoding.\u003c\/p\u003e\n\u003ch2\u003eHosts that share this connector\u003c\/h2\u003e\n\u003cp\u003eThis coil mounts on the screw-in Teknetics and Fisher machines we stock: \u003ca href=\"\/products\/teknetics-alpha-2000-metal-detector\"\u003eTeknetics Alpha 2000\u003c\/a\u003e, \u003ca href=\"\/products\/teknetics-delta-4000-metal-detector\"\u003eTeknetics Delta 4000\u003c\/a\u003e, \u003ca href=\"\/products\/teknetics-gamma-6000-metal-detector\"\u003eTeknetics Gamma 6000\u003c\/a\u003e, \u003ca href=\"\/products\/teknetics-omega-8500-metal-detector\"\u003eTeknetics Omega 8500\u003c\/a\u003e, \u003ca href=\"\/products\/teknetics-eurotek-pro-metal-detector\"\u003eTeknetics EuroTek Pro\u003c\/a\u003e, \u003ca href=\"\/products\/fisher-f11-metal-detector\"\u003eFisher F11\u003c\/a\u003e, \u003ca href=\"\/products\/fisher-f22-metal-detector\"\u003eFisher F22\u003c\/a\u003e, \u003ca href=\"\/products\/fisher-f44-weatherproof-metal-detector\"\u003eFisher F44\u003c\/a\u003e. First Texas also prints the Fisher F5, which we do not stock. Two exclusions to know: the plug-in base EuroTek and Digitek cannot take any screw-in coil, and First Texas does not list this 8 in \/ 20 cm size for the G2, G2+ or Gold Bug machines (their small-coil option is the 5 in \/ 13 cm, part 5COIL-TEK).\u003c\/p\u003e\n\u003ch2\u003eWhy this coil: the balance point\u003c\/h2\u003e\n\u003cp\u003eCoil choice is a set of trades, and the 8 in \/ 20 cm is where the trades cancel out. Against the 5 in \/ 13 cm it buys depth and sweep width; against the 10 in \/ 25 cm and 11 in \/ 28 cm it buys lightness and cleaner behavior around scattered junk. On an everyday coin-and-relic hunt across a yard, park or school ground, it asks the fewest compromises of any size in the line, which is why it makes the best first spare and the head that lives on the shaft between specialty jobs. Reserve the 5 in \/ 13 cm for iron-choked sites, and bring out the 10 in \/ 25 cm concentric or 11 in \/ 28 cm Double-D when open ground or maximum depth is the mission.\u003c\/p\u003e\n\u003cp\u003eThe table below lists the real figures under the part number First Texas itself uses, no house catalog code to cross-reference.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8COIL-7TEK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eround search coil, 8 in \/ 20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSCREW-IN (twist-lock) connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTeknetics Alpha 2000, Teknetics Delta 4000, Teknetics Gamma 6000, Teknetics Omega 8500, Teknetics EuroTek Pro, Fisher F11, Fisher F22, Fisher F44. Also fits the Fisher F5 (not stocked by History Seekers). Not compatible with the base EuroTek or Digitek (plug-in connector).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot published by First Texas. We list only verified figures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eQuick answers\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes my machine take this coil?\u003c\/strong\u003e Check the connector on your current coil cable. A threaded twist-lock collar means screw-in, and this coil fits the hosts listed above: Teknetics Alpha 2000, Delta 4000, Gamma 6000, Omega 8500 and EuroTek Pro, plus Fisher F11, F22 and F44. A push-in plug means a base EuroTek or Digitek, which need the plug-in coil line. This 8 in \/ 20 cm size is not listed for the G2, G2+ or Gold Bug machines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen would I pick a different size?\u003c\/strong\u003e Go smaller (5 in \/ 13 cm) when trash density or tight spaces demand separation; go larger (10 in \/ 25 cm concentric or 11 in \/ 28 cm Double-D) when coverage or depth on open ground is the goal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWater use?\u003c\/strong\u003e Coil heads in this line are submersible while the control housing stays dry. Rated depths differ by machine; call 256-284-2247 and we will confirm yours.\u003c\/p\u003e\n\u003cp\u003eHistory Seekers is a small, American, field-staffed business and an authorized First Texas dealer across Fisher, Teknetics and Bounty Hunter, three brands from one El Paso maker. Ask for a coil recommendation and you will get an answer grounded in dirt time, not a script. The story is more important than the artifact.\u003c\/p\u003e\n","brand":"Teknetics","offers":[{"title":"Default Title","offer_id":48150954574082,"sku":"8COIL-7TEK","price":103.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/9012\/8130\/files\/teknetics-8-inch-search-coil-screw-in.jpg?v=1784518167","url":"https:\/\/historyseekers.net\/products\/teknetics-8-inch-search-coil-screw-in","provider":"History Seekers Metal Detectors","version":"1.0","type":"link"}