{"id":1624,"date":"2025-12-30T08:12:42","date_gmt":"2025-12-30T08:12:42","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=1624"},"modified":"2026-09-25T07:20:46","modified_gmt":"2026-09-25T07:20:46","slug":"5-16-18-unc-tin-coated-hss-spiral-flute-tap","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/vi\/san-pham\/5-16-18-unc-tin-coated-hss-spiral-flute-tap\/","title":{"rendered":"5\/16-18 M\u0169i khoan xo\u1eafn \u1ed1c UNC HSS \u2013 M\u1ea1 TiN"},"content":{"rendered":"
\n

<\/p>\n

\n

5\/16-18 M\u0169i khoan xo\u1eafn \u1ed1c UNC HSS \u2013 M\u1ea1 TiN<\/h2>\n

This 5\/16-18 UNC HSS spiral flute tap is designed for blind-hole internal threading where controlled chip evacuation is important. The helical flute geometry carries chips back toward the shank and out of the hole, helping reduce chip packing near the bottom during machine tapping. A TiN coating provides a wear-resistant surface for repeated threading operations, while the standard 5\/16-18 UNC specification provides an 18 TPI coarse Unified thread for general industrial components. Confirm the workpiece material, pilot-hole size, required full-thread depth, thread tolerance and machine conditions before production.<\/p>\n

<\/p>\n

\n
Thread Size<\/span>5\/16-18 UNC<\/span><\/div>\n
Tap Type<\/span>Spiral Flute Tap<\/span><\/div>\n
V\u1eadt li\u1ec7u d\u1ee5ng c\u1ee5<\/span>HSS<\/span><\/div>\n
Coating<\/span>TiN<\/span><\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Key Configuration<\/h3>\n
\n
\n
\u219f<\/div>\n
Spiral Flute Chip Evacuation<\/div>\n

Helical flutes guide chips back toward the shank, helping clear material from blind holes where chips cannot pass through the bottom.<\/p>\n<\/div>\n

\n
UNC<\/div>\n
5\/16-18 UNC Thread<\/div>\n

The tool cuts a 5\/16-inch Unified National Coarse internal thread with 18 threads per inch for standard UNC applications.<\/p>\n<\/div>\n

\n
TiN<\/div>\n
TiN-Coated HSS<\/div>\n

The TiN-coated HSS cutting surface is intended to improve wear resistance and support repeatable machine tapping under suitable cutting conditions.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Key Product Advantages<\/h3>\n
\n
\n
BH<\/div>\n

Blind-Hole Tapping<\/h4>\n

Spiral flute geometry helps remove chips upward from enclosed holes during internal thread cutting.<\/p>\n<\/div>\n

\n
TiN<\/div>\n

Wear-Resistant Coating<\/h4>\n

TiN provides a hard coated surface that can help reduce wear under properly selected tapping conditions.<\/p>\n<\/div>\n

\n
18<\/div>\n

Standard 18 TPI Pitch<\/h4>\n

The standard 5\/16-18 UNC specification simplifies matching to common inch-thread drawings and replacement requirements.<\/p>\n<\/div>\n

\n
CNC<\/div>\n

Machine-Tapping Configuration<\/h4>\n

Suitable for synchronized machine tapping when pilot-hole size, lubrication, alignment and cutting data are correctly controlled.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Tapping Applications<\/h3>\n

This 5\/16-18 UNC spiral flute tap is intended primarily for blind-hole threading on tapping machines and CNC equipment. The current product information lists carbon steel, stainless steel, aluminum and alloy materials as possible workpiece groups, but the exact grade and hardness should be confirmed before selecting production cutting conditions.<\/p>\n

\n
Blind Holes<\/strong>PRIMARY APPLICATION<\/span><\/div>\n
UNC Threads<\/strong>5\/16-18<\/span><\/div>\n
CNC Machine Tapping<\/strong>SUITABLE<\/span><\/div>\n
Mixed Materials<\/strong>APPLICATION REVIEW<\/span><\/div>\n<\/div>\n
Application Note:<\/strong>
\nBlind-hole tapping requires enough extra hole depth for the tap lead and chip space. Confirm the pilot-hole diameter, required full-thread depth, workpiece grade, thread tolerance, lubrication and synchronized feed before production.<\/div>\n<\/section>\n

<\/p>\n

\n

Workpiece Material Selection<\/h3>\n
\n\n\n\n\n\n\n\n
MATERIAL GROUP<\/th>\nTYPICAL EXAMPLES<\/th>\nSELECTION NOTE<\/th>\n<\/tr>\n<\/thead>\n
P Steel<\/td>\nCarbon and alloy steels<\/td>\nConfirm grade and hardness<\/td>\n<\/tr>\n
M Stainless Steel<\/td>\nSelected stainless steel grades<\/td>\nApplication-specific review recommended<\/td>\n<\/tr>\n
N Non-Ferrous<\/td>\nAluminum and selected non-ferrous alloys<\/td>\nConfirm chip behavior and lubrication<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Material Note:<\/strong>
\nThe current product description identifies steel, stainless steel, aluminum and alloy materials as potential applications. This does not establish universal suitability for every grade or hardness. Confirm the actual material before setting cutting speed and lubrication.<\/div>\n<\/section>\n

<\/p>\n

\n

Product Details & Demonstration<\/h3>\n

The product image and video below show the 5\/16-18 UNC TiN-coated spiral flute tap configuration. Confirm thread tolerance, tap dimensions and machine requirements when ordering.<\/p>\n

\n

\"5\/16-18

Product Video<\/h3>\n

For additional machine-tapping configurations, browse our HSS Tap Range<\/a>.<\/p>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

\n

<\/p>\n

TiN-coated 5\/16-18 UNC HSS spiral flute machine tap for blind-hole internal threading. The helical flute geometry carries chips back toward the shank, helping reduce chip accumulation in enclosed holes, while the 18 TPI UNC thread specification supports common inch-thread machining and replacement requirements.<\/p>\n

<\/p>\n

\n

Product Specifications<\/h2>\n
\n
Tap Type<\/span>Spiral Flute Machine Tap
\n<\/strong><\/div>\n
V\u1eadt li\u1ec7u d\u1ee5ng c\u1ee5<\/span>HSS
\n<\/strong><\/div>\n
Thread Size<\/span>5\/16-18 UNC
\n<\/strong><\/div>\n
Thread Pitch<\/span>18 TPI \/ \u22481.411 mm
\n<\/strong><\/div>\n
Nominal Diameter<\/span>5\/16 in \/ \u22487.94 mm
\n<\/strong><\/div>\n
Coating<\/span>TiN
\n<\/strong><\/div>\n
Primary Application<\/span>Blind-Hole Tapping
\n<\/strong><\/div>\n
Tapping Method<\/span>Thread Cutting
\n<\/strong><\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n
\n
MOQ:<\/strong>
\n10 Pieces<\/div>\n
Standard Dispatch:<\/strong>
\n1\u20133 Days for In-Stock Items<\/div>\n
Customization:<\/strong>
\nDimensions \/ Thread Tolerance \/ Coating \/ OEM<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"featured_media":1629,"template":"","meta":{"_acf_changed":false,"googlesitekit_rrm_CAowkrPfCw:productID":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product_brand":[],"product_cat":[3664,3677],"product_tag":[4967,4963,4966,4960,4956,2760],"class_list":["post-1624","product","type-product","status-publish","has-post-thumbnail","product_cat-hss-cutting-tools","product_cat-hss-taps","product_tag-blind-hole-threading-2","product_tag-hss-cutting-tool","product_tag-hss-tap","product_tag-inch-threading","product_tag-spiral-flute","product_tag-tin-coated","first","instock","shipping-taxable","product-type-simple","entry","content-bg","loop-entry"],"acf":[],"taxonomy_info":{"product_cat":[{"value":3664,"label":"HSS Cutting Tools"},{"value":3677,"label":"HSS Taps"}],"product_tag":[{"value":4967,"label":"Blind-Hole Threading"},{"value":4963,"label":"HSS Cutting Tool"},{"value":4966,"label":"HSS Tap"},{"value":4960,"label":"Inch Threading"},{"value":4956,"label":"Spiral Flute"},{"value":2760,"label":"TiN Coated"}]},"featured_image_src_large":["https:\/\/hycuttingtools.com\/wp-content\/uploads\/2025\/12\/\u4e3b-High-Speed-Steel-516-18-UNC-Titanium-Plated-1_\u526f\u672c-1024x1024.webp",1024,1024,true],"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/product\/1624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/media\/1629"}],"wp:attachment":[{"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/media?parent=1624"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/product_brand?post=1624"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1624"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hycuttingtools.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}