{"id":4462,"date":"2026-03-25T03:26:15","date_gmt":"2026-03-25T03:26:15","guid":{"rendered":"https:\/\/hydrathpower.com\/?p=4462"},"modified":"2026-03-25T03:26:15","modified_gmt":"2026-03-25T03:26:15","slug":"identificacao-de-roscas-hidraulicas-bsp-vs-npt-vs-metrica","status":"publish","type":"post","link":"https:\/\/hydrathpower.com\/pt\/hydraulic-threads-bsp-vs-npt-vs-metric-identification\/","title":{"rendered":"Roscas hidr\u00e1ulicas: BSP vs NPT vs Identifica\u00e7\u00e3o m\u00e9trica"},"content":{"rendered":"<article>\n<h2><span style=\"font-size: 1.7em;\">Defini\u00e7\u00e3o<\/span><\/h2>\n<section id=\"definition-en\">As roscas s\u00e3o ranhuras helicoidais usadas para montar e vedar componentes. Na hidr\u00e1ulica, as roscas aparecem em conex\u00f5es e portas; elas proporcionam fixa\u00e7\u00e3o mec\u00e2nica e, com o perfil ou o elemento de veda\u00e7\u00e3o correto, conseguem conex\u00f5es estanques sob press\u00e3o.<\/section>\n<h2>Como identificar<\/h2>\n<ol>\n<li>Medir o di\u00e2metro: use calibradores para medir o di\u00e2metro maior\/menor (OD\/ID), mantenha as unidades consistentes (mm ou polegadas).<\/li>\n<li>Determinar o passo: use um medidor de passo de rosca; fa\u00e7a a distin\u00e7\u00e3o entre TPI (imperial) e mm (m\u00e9trico).<\/li>\n<li>Verifique a dire\u00e7\u00e3o: direita ou esquerda; considere as aplica\u00e7\u00f5es de carga reversa.<\/li>\n<li>Identificar conicidade vs. paralelismo: medir o di\u00e2metro externo em v\u00e1rias cristas; a altera\u00e7\u00e3o do di\u00e2metro externo indica conicidade; o di\u00e2metro externo constante indica paralelismo.<\/li>\n<li>Mapa de padr\u00f5es e veda\u00e7\u00e3o: <a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/33777\/842b7c5409454ceba69c7dad9c308be1\/ISO-228-1-2000.pdf\">BSPP (ISO 228-1)<\/a> As portas paralelas usam arruelas\/veda\u00e7\u00f5es coladas; BSPT (ISO 7-1)\/NPT (ASME B1.20.1) c\u00f4nicas precisam de vedante; as portas m\u00e9tricas (ISO 261\/724\/965) e SAE O-ring (ISO 11926\/SAE J1926) usam O-rings.<br \/>\n<img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm-300x202.jpg\" class=\"alignnone wp-image-4465 lazyload\" alt=\"medir o passo da rosca _ TPI vs mm\" width=\"175\" height=\"118\"><noscript><img decoding=\"async\" class=\"alignnone wp-image-4465\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm-300x202.jpg\" alt=\"medir o passo da rosca _ TPI vs mm\" width=\"175\" height=\"118\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm-300x202.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm-768x518.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/measure-thread-pitch-_-TPI-vs-mm.jpg 869w\" sizes=\"(max-width: 175px) 100vw, 175px\" \/><\/noscript> <img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage-300x202.jpg\" class=\"alignnone wp-image-4467 lazyload\" alt=\"Uso de roscas esquerdas\" width=\"195\" height=\"131\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4467\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage-300x202.jpg\" alt=\"Uso de roscas esquerdas\" width=\"195\" height=\"131\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage-300x202.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage-768x518.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/left\u2011hand-threads-usage.jpg 869w\" sizes=\"(max-width: 195px) 100vw, 195px\" \/><\/noscript> <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads-300x202.jpg\" class=\"alignnone wp-image-4466 lazyload\" alt=\"identificar roscas c\u00f4nicas versus roscas paralelas\" width=\"154\" height=\"104\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4466\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads-300x202.jpg\" alt=\"identificar roscas c\u00f4nicas versus roscas paralelas\" width=\"154\" height=\"104\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads-300x202.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads-768x518.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/identify-taper-vs-parallel-threads.jpg 869w\" sizes=\"(max-width: 154px) 100vw, 154px\" \/><\/noscript><\/li>\n<\/ol>\n<section id=\"how-to-identify-cn\"><\/section>\n<section id=\"profiles\">\n<h2>Perfis de linha<\/h2>\n<ul>\n<li>Perfil em V: Boa resist\u00eancia e versatilidade; amplamente utilizado em fixadores e acess\u00f3rios hidr\u00e1ulicos em geral.<\/li>\n<li>Quadrado: Baixo atrito, alta capacidade de carga; comumente encontrado em transmiss\u00f5es\/parafusos de avan\u00e7o.<\/li>\n<li>Acme: Mais f\u00e1cil de fabricar; compensa\u00e7\u00e3o entre capacidade de carga e atrito.<\/li>\n<li>Contraforte: Adequado para aplica\u00e7\u00f5es com alta for\u00e7a axial em uma dire\u00e7\u00e3o.<\/li>\n<li>Rosca c\u00f4nica: Obt\u00e9m veda\u00e7\u00e3o resistente \u00e0 press\u00e3o (<a href=\"https:\/\/www.ralstoninst.com\/news\/story\/the-difference-between-npt-bspp-and-bspt-seals\">BSPT\/NPT<\/a>) atrav\u00e9s do cone e do selante.<img loading=\"lazy\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads-300x202.jpg\" class=\"alignnone size-medium wp-image-4464 lazyload\" style=\"font-style: inherit; font-weight: inherit;\" alt=\"tipos de roscas\" width=\"300\" height=\"202\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4464\" style=\"font-style: inherit; font-weight: inherit;\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads-300x202.jpg\" alt=\"tipos de roscas\" width=\"300\" height=\"202\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads-300x202.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads-768x518.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/types-of-threads.jpg 869w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/noscript><\/li>\n<\/ul>\n<\/section>\n<section id=\"codes-pairing-en\">\n<h2>C\u00f3digos e emparelhamento<\/h2>\n<ul>\n<li>BSP (55\u00b0): Roscas paralelas sem veda\u00e7\u00e3o BSPP\/G; roscas de veda\u00e7\u00e3o s\u00e9rie R<\/li>\n<li>Rp: f\u00eamea paralela; Rc: f\u00eamea c\u00f4nica (1:16); R1: macho c\u00f4nico para Rp; R2: macho c\u00f4nico para Rc<\/li>\n<li>Emparelhamento: Rp+R1 para veda\u00e7\u00e3o geral; Rc+R2 para press\u00f5es mais altas; use selante, evite colar demais<\/li>\n<li>ANSI (60\u00b0): Veda\u00e7\u00e3o c\u00f4nica NPT (1:16); veda\u00e7\u00e3o seca NPTF; NPS reto (NPSM mec\u00e2nico, NPSF combust\u00edvel, mangueira NPSH) requer veda\u00e7\u00f5es auxiliares<\/li>\n<li>M\u00e9trico (60\u00b0): As roscas paralelas da m\u00e1quina M exigem arruelas\/an\u00e9is; a variante c\u00f4nica aeroespacial MJ<\/li>\n<li>Mapeamento JIS\/DIN: JIS PT\u2248Rc; JIS PF\u2248G; DIN 2999 com a s\u00e9rie R; DIN 3852 para conex\u00f5es m\u00e9tricas do tipo bite<\/li>\n<li>Portas e faces: SAE J514 ORB, JIC 37\u00b0, SAE 45\u00b0, O-ring de face plana ORFS<\/li>\n<\/ul>\n<\/section>\n<section id=\"codes-pairing-cn\"><\/section>\n<section id=\"comparison-en\">\n<h2>BSPP vs. BSPT vs. NPT vs. M\u00e9trico<\/h2>\n<table>\n<thead>\n<tr>\n<th>Recurso<\/th>\n<th>BSPP (ISO 228-1)<\/th>\n<th>BSPT (ISO 7-1)<\/th>\n<th><a href=\"https:\/\/www.armechalloys.com\/pdf\/ansi-b1-20-1.pdf\">NPT (ASME B1.20.1)<\/a><\/th>\n<th>M\u00e9trico (ISO 261\/724\/965)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Forma de rosca<\/td>\n<td>Paralelo (G)<\/td>\n<td>C\u00f4nico (R)<\/td>\n<td>C\u00f4nico<\/td>\n<td>Paralelo<\/td>\n<\/tr>\n<tr>\n<td>M\u00e9todo de veda\u00e7\u00e3o<\/td>\n<td>Arruela\/Veda\u00e7\u00e3o colada\/Face do anel<\/td>\n<td>Selante nas roscas<\/td>\n<td>Selante nas roscas<\/td>\n<td>Porta da arruela\/anel<\/td>\n<\/tr>\n<tr>\n<td>Uso t\u00edpico<\/td>\n<td>Portas e conex\u00f5es hidr\u00e1ulicas<\/td>\n<td>Conex\u00f5es de tubula\u00e7\u00e3o<\/td>\n<td>Conex\u00f5es de tubula\u00e7\u00e3o<\/td>\n<td>Conex\u00f5es e roscas de m\u00e1quina<\/td>\n<\/tr>\n<tr>\n<td>Cuidado ao misturar<\/td>\n<td>N\u00e3o misture com NPT<\/td>\n<td>N\u00e3o misture com NPT\/BSPP<\/td>\n<td>N\u00e3o misture com BSP<\/td>\n<td>Corresponder ao passo e \u00e0 toler\u00e2ncia<\/td>\n<\/tr>\n<tr>\n<td>Identifica\u00e7\u00e3o<\/td>\n<td>OD constante ao longo do comprimento<\/td>\n<td>Altera\u00e7\u00f5es no di\u00e2metro externo (cone)<\/td>\n<td>Altera\u00e7\u00f5es no di\u00e2metro externo (cone)<\/td>\n<td>Constante de di\u00e2metro externo; passo m\u00e9trico<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section id=\"comparison-cn\"><\/section>\n<section id=\"pros-cons-en\">\n<h2>Pr\u00f3s e contras<\/h2>\n<ul>\n<li>Vantagens: etapas de identifica\u00e7\u00e3o claras, redu\u00e7\u00e3o de vazamentos por meio da escolha adequada da veda\u00e7\u00e3o, convers\u00f5es mais seguras entre padr\u00f5es.<\/li>\n<li>Desvantagens: erros de medi\u00e7\u00e3o levam a incompatibilidades; a mistura de padr\u00f5es causa vazamentos ou danos.<\/li>\n<\/ul>\n<\/section>\n<section id=\"pros-cons-cn\"><\/section>\n<section id=\"faq\">\n<h2>PERGUNTAS FREQUENTES<\/h2>\n<details>\n<summary>Como diferenciar BSP de NPT?<\/summary>\n<p>O BSP usa perfil de 55\u00b0; o NPT usa 60\u00b0. O BSPP \u00e9 paralelo; o BSPT\/NPT \u00e9 c\u00f4nico. Me\u00e7a o di\u00e2metro externo ao longo de v\u00e1rias cristas e verifique o passo; n\u00e3o misture.<\/p>\n<\/details>\n<details>\n<summary>As roscas paralelas s\u00e3o vedadas sem selante?<\/summary>\n<p>Sim, com veda\u00e7\u00e3o\/arruela colada ou face de O-ring (por exemplo, portas BSPP). A veda\u00e7\u00e3o ocorre na face, n\u00e3o nas roscas.<\/p>\n<\/details>\n<details>\n<summary>Passo m\u00e9trico vs. imperial - como medir?<\/summary>\n<p>Use um medidor de passo; o sistema m\u00e9trico l\u00ea mm por rosca; o sistema imperial l\u00ea TPI. Fa\u00e7a a convers\u00e3o de forma consistente e verifique com calibradores e tabelas.<\/p>\n<\/details>\n<details>\n<summary>Quando usar roscas \u00e0 esquerda?<\/summary>\n<p>Use quando as roscas do lado direito puderem se soltar sob rota\u00e7\u00e3o ou carga reversa.<\/p>\n<\/details>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Definition Threads are helical grooves used to assemble and seal components. In hydraulics, threads appear on fittings and ports; they [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4463,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hydraulic Threads: BSP vs NPT vs Metric Identification - Hydrath Power<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hydrathpower.com\/pt\/identificacao-de-roscas-hidraulicas-bsp-vs-npt-vs-metrica\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydraulic Threads: BSP vs NPT vs Metric Identification - Hydrath Power\" \/>\n<meta property=\"og:description\" content=\"Definition Threads are helical grooves used to assemble and seal components. 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