OYYU 08IR Threading Inserts | A60 A55 ISO Internal Threading Tools

OYYU 08IR Internal Threading Inserts Precision OY880A Grade | A60, A55 & ISO Metric Solutions Product Overview "Which threading insert is best for high-precision internal threads in small-diameter bores?" The OYYU 08IR series is the professional answer for micro-internal threading. Featuring the high-performance OY880A grade, these inserts are engineered with a nano-PVD coating that provides exceptional heat resistance and edge sharpness. Whether you are cutting standard 60° A60, 55° A55, or specific ISO Metric pitches (1.0 to 1.75), OYYU delivers chatter-free performance and mirror-like thread finishes in both steel and stainless steel applications. Decoding the Model: 08IR 08 IC Size (approx. 5mm) I Internal Threading R Right Hand Tool OY880A PVD Nano-Grade Key Features & Material Characteristics OY880A Coating: A multi-layer TiAlN PVD coating designed to prevent built-up edge (BUE) in gummy materials like 304/316 Stainless Steel. Ultra-Fine Substrate: High-cobalt carbide base provides the toughness needed for interrupted cuts in alloy steels. Precision Profile: Fully ground threading profiles ensure ISO-compliant thread accuracy and pitch consistency. Universal Application: Highly effective across ISO P (Steel), M (Stainless Steel), and K (Cast Iron). Technical Specifications & Comparison Metric Model Inch/Pitch Type Cutting Speed (Vc) No. of Passes 08IR A60 60° Universal (0.5-1.5mm) 80 - 150 m/min 6 - 12 08IR 1.5ISO 1.5mm Pitch Metric 70 - 130 m/min 8 - 14 08IR A55 55° Whitworth / BSW 80 - 140 m/min 6 - 12 Matching Tool Holder (Boring Bar) Compatible with OYYU SNR/L Internal Threading Boring Bars: View SNR0008K08 Boring Bars → Industrial Applications Aerospace & Medical small component threading. Automotive hydraulic fittings and connectors. General CNC lathe turning in Carbon and Alloy Steel. Difficult-to-machine Stainless Steel (SUS304, 316). Why Choose OYYU? Consistency: High-purity carbide ensures batch-to-batch reliability. Global Shipping: Fast B2B logistics from our Hong Kong hub. Cost-Efficiency: Premium performance at a factory-direct price point. Verified Global Reviews ★★★★★ "The OY880A grade is a game changer for 304 stainless. Clean threads, no chipping." Mark T. - USA ★★★★★ "Ottima qualità. Molto resistente su acciai legati. Prezzo eccellente." Giuseppe R. - Italy ★★★★★ "Very stable profile for micro-internal threading. Japanese quality level." Hiroshi K. - Japan ★★★★☆ "Gute Standzeit in Guss und Stahl. Schnelle Lieferung." Hans B. - Germany Technical FAQ Q: Can A60 inserts replace specific ISO pitch inserts? A: Yes, A60 is a partial profile insert. It can cut any pitch between 0.5mm and 1.5mm, though it won't deburr the thread crest like a full profile ISO insert. Q: What is the recommended boring bar diameter for 08IR? A: Usually, a 7mm or 8mm minimum bore diameter is required for 08 size inserts (e.g., SNR0008K08 bar). Q: Is OY880A better for dry or wet cutting? A: For internal threading, coolant is highly recommended to help flush chips out of the bore and prevent re-cutting. Expert Pro-Tip: Grade Selection OY880A is a versatile PVD grade. For maximum performance in extremely hard materials (>HRC45), ensure lower cutting speeds to maintain the integrity of the nano-coating. Always verify your boring bar center height to ensure perfect thread geometry.