{"product_id":"air-probe-blind-apb","title":"Blind-Hole Air Plug Gage (APB)","description":"\u003cp\u003eThe blind-hole air plug (APB) puts the jets close to the nose so you can measure near the bottom of a blind bore. It is the usual choice for blind holes, with better wear life than the super-blind style.\u003c\/p\u003e\n\u003ch2\u003eWhere the jets sit\u003c\/h2\u003e\n\u003cp\u003eDimension A (nose to jet centerline) runs from about .080″ on the smallest plugs to .125″ on the largest. A plug can't measure closer to the bottom than the leading edge of its jet; if you need to get closer still, see the \u003ca href=\"\/products\/air-probe-super-blind-aps\"\u003esuper-blind (APS)\u003c\/a\u003e style. For through bores, the \u003ca href=\"\/products\/air-probe-thru-hole-apt\"\u003ethru-hole (APT)\u003c\/a\u003e style lasts longer.\u003c\/p\u003e\n\u003ch2\u003eDual Master or Single Master\u003c\/h2\u003e\n\u003cp\u003eChoose \u003cstrong\u003eDual Master\u003c\/strong\u003e tooling to set the gage with a minimum and maximum master and work with any two-master readout. Choose \u003cstrong\u003eSingle Master\u003c\/strong\u003e tooling to set on one master at nominal with a matched single-master readout such as the \u003ca href=\"\/pages\/dimensionair-replacement\"\u003eAir Gage Pro M5-L or M5-H\u003c\/a\u003e. Not sure? Read \u003ca href=\"\/blogs\/air-gaging\/single-vs-dual-master-air-gaging\"\u003esingle vs. dual master air gaging\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eHow to order\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eDual Master\u003c\/th\u003e\n\u003cth\u003eSingle Master\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eStyle – jet code + clearance class – material – min\/max bore\u003c\/td\u003e\n\u003ctd\u003eStyle – spec code – material – nominal master size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJet codes\u003c\/td\u003e\n\u003ctd\u003e1, 4 (large jet, above .323″) or 5\u003c\/td\u003e\n\u003ctd\u003e6, 7 or 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003eMinimum bore − clearance\u003c\/td\u003e\n\u003ctd\u003eNominal master size − clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMasters needed\u003c\/td\u003e\n\u003ctd\u003eTwo: minimum and maximum\u003c\/td\u003e\n\u003ctd\u003eOne, at nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMaterial: \u003cstrong\u003eC\u003c\/strong\u003e chrome-plated or \u003cstrong\u003eS\u003c\/strong\u003e hardened steel. Every probe has recessed jets, so body wear doesn't shift the reading, and an air relief groove along the gaging body so blind bores don't build up back-pressure.\u003c\/p\u003e\n\u003ch2\u003eWhat we need to quote\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBore size and tolerance\u003c\/li\u003e\n\u003cli\u003eBore depth, and whether it is through or blind\u003c\/li\u003e\n\u003cli\u003eGrooves, cross holes or chamfers near the measuring point\u003c\/li\u003e\n\u003cli\u003eYour readout make and model, or single vs. dual master\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHandles, hose assemblies, extensions and readout fittings are on the \u003ca href=\"\/collections\/air-gage-accessories\"\u003eaccessories page\u003c\/a\u003e. Full dimensions are in the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/Air_Gaging_LLC_Air_Tooling_Catalog.pdf\"\u003eair tooling catalog (PDF)\u003c\/a\u003e.\u003c\/p\u003e","brand":"Air Gaging LLC","offers":[{"title":"Default Title","offer_id":50543241167103,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/air-plug-gage-blind-apb.jpg?v=1790459495","url":"https:\/\/airgaging.com\/products\/air-probe-blind-apb","provider":"Air Gaging LLC","version":"1.0","type":"link"}