{"product_id":"hertel-48538136-no-20-wire-size-135-split-point-drill-bit","title":"Hertel 48538136 No. 20 Wire Size 135 Split Point Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 48538136 is a short-series threaded shank drill bit designed for precision drilling in low-tensile strength materials. It carries a No. 20 wire gauge size with a decimal equivalent of 0.1610 inches and features a 135-degree split point for fast engagement and reduced walking on entry. The 1\/4-28 threaded hex shank provides a secure, positive lock in compatible quick-change drill holders. The bit is manufactured from high speed steel with an oxide coating that offers basic corrosion resistance and lubricity during drilling operations. Right-hand cutting with a regular spiral flute pattern makes this a standard workhorse for production and field drilling tasks performed by machinists, aircraft mechanics, and sheet metal tradespeople.\u003c\/p\u003e\u003cp\u003eThis bit is suited for drilling into aluminum, mild steel, plastics, and other low-tensile strength materials common in light fabrication, MRO, and aerospace sheet metal work. The short-series overall length of 1.25 inches and 9\/16-inch flute length give it added rigidity in tight-clearance applications where a standard jobber-length bit would be impractical. The NAS 965 Type B specification aligns it with aerospace and military fastener drilling standards, making it appropriate for applications where controlled hole geometry is required. The 1\/4-28 threaded shank is standard for aircraft-grade quick-change systems and inline pneumatic drills.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 20 wire size with 0.1610 inch decimal diameter for precise hole sizing\u003c\/li\u003e\n\u003cli\u003e135-degree web-thinned split point reduces thrust and prevents bit walking\u003c\/li\u003e\n\u003cli\u003e1\/4-28 threaded hex shank for positive retention in quick-change tooling\u003c\/li\u003e\n\u003cli\u003eShort-series body at 1.25 inches OAL adds rigidity in confined work areas\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with oxide coating for general-purpose durability\u003c\/li\u003e\n\u003cli\u003eMeets NAS 965 Type B specification for aerospace and MRO drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 1\/4-28 threaded quick-change drill holders and pneumatic inline drills that accept NAS 965 Type B threaded shank tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or mechanics familiar with threaded shank tooling systems. Ensure the threaded shank is fully engaged and torqued per the drill holder manufacturer specifications before operation. Secure the workpiece properly and use appropriate cutting fluid for the material being drilled to extend bit life. Inspect the cutting edges before each use and replace the bit if the split point shows signs of wear or chipping.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1610 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.5625 inches (9\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Hex Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Thread Size\u003c\/strong\u003e: 1\/4-28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Low-Tensile Strength Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Short\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Number\u003c\/strong\u003e: NAS 965 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 48538136\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51729523310898,"sku":"48538136","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/753078280a3b1f1dffc5d6b00cce9c00.jpg?v=1788705664","url":"https:\/\/voomisupply.com\/products\/hertel-48538136-no-20-wire-size-135-split-point-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}