{"product_id":"insize-thread-go-nogo-plug-gauge-m15x1mm-series-4139-15p","title":"Insize 4139-15P Fine Thread Plug Gage – M15 × 1 (Go \/ No-Go, Class 6H)","description":"\u003cp\u003eInsize 4139-15P Fine Thread Plug Gage – M15 × 1 (Go \/ No-Go, Class 6H)\u003c\/p\u003e\n\u003cp\u003eThe Insize 4139-15P Fine Thread Plug Gage is a precision inspection tool engineered for accurate verification of internal thread dimensions. Conforming to ISO 1502 standards, this plug gauge is designed for M15 × 1 metric fine threads and includes both “Go” and “No-Go” ends — making it ideal for quality control, production, and maintenance applications. Its hardened, ground construction ensures long-term durability, repeatable accuracy, and reliable performance under frequent use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: 4139-15P\u003c\/li\u003e\n\u003cli\u003eThread size: M15 × 1 (metric fine thread)\u003c\/li\u003e\n\u003cli\u003eTolerance class: 6H (internal thread tolerance) \u003c\/li\u003e\n\u003cli\u003eType: Go \/ No-Go Plug Gauge (dual-end)\u003c\/li\u003e\n\u003cli\u003eStandard: ISO 1502 compliant\u003c\/li\u003e\n\u003cli\u003eMaterial: Hardened and ground steel for durability and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose the 4139-15P Plug Gage?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast and reliable thread verification: Instantly confirms whether internal threads meet required specifications — essential during machining, tapping, or final inspection.\u003c\/li\u003e\n\u003cli\u003eDual-end Go \/ No-Go design: “Go” end checks that the thread is cut to correct pitch and depth; “No-Go” end ensures that threads are not oversized — preventing out-of-tolerance parts from passing inspection.\u003c\/li\u003e\n\u003cli\u003eProduction-ready durability: Hardened, ground steel construction withstands repeated insertion without loss of accuracy, ideal for shop floors and inspection workbenches.\u003c\/li\u003e\n\u003cli\u003eStandards compliance: Built to ISO 1502, making it compatible with global quality requirements for metric fine threads.\u003c\/li\u003e\n\u003cli\u003eSimplicity \u0026amp; speed: A compact, manual gauge that requires no power — perfect for on–the–spot checks or use in a tool room, maintenance bay, or production line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you’re performing quality control, thread inspection, or verifying threaded components before assembly, the 4139-15P plug gage provides a precise, trusted, and efficient solution — an essential tool in any machinist’s or inspector’s toolkit.\u003c\/p\u003e","brand":"INSIZE","offers":[{"title":"Default Title","offer_id":51124482834719,"sku":"4139-15P","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0050\/2484\/1799\/files\/insize-measuring-equipment-insize-4139-15p-fine-thread-plug-gage-m15-x-1-go-no-go-class-6h-4749591247239-1238572846.jpg?v=1778907507","url":"https:\/\/twineagleimports.com\/products\/insize-thread-go-nogo-plug-gauge-m15x1mm-series-4139-15p","provider":"Twin Eagle Imports ","version":"1.0","type":"link"}