--- description: Genuine Seiko NH38/NH39 balance complete with stud 0310184. Japanese-made balance assembly for automatic movement repair and restoration. title: SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 - Sofly image: https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg --- [Skip to content](#content) * [ Home ](https://www.soflypart.com "Home") * [Products](https://www.soflypart.com/shop/ "Products") * [Watch Movement Parts](https://www.soflypart.com/product-category/watch-parts/movement-parts/ "Watch Movement Parts") * [Watch Parts](https://www.soflypart.com/product-category/watch-parts/ "Watch Parts") * **SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184** [![SEIKO (SII) NH38/NH39 Balance Complete](https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg.webp)](https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg) [![SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 - Image 2](https://www.soflypart.com/wp-content/uploads/2019/06/nh39b.jpg.webp)](https://www.soflypart.com/wp-content/uploads/2019/06/nh39b.jpg) # SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 $9.00 You Saved | Brand | Choose an optionSEIKO![SEIKO](https://www.soflypart.com/wp-content/uploads/2023/06/42.jpg)[Clear](#) | | ----- | ---------------------------------------------------------------------------------------------------- | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ----- | | 1 - 2 | — | $9.00 | | 3 - 4 | 5 % | $8.55 | | 5 - 9 | 7 % | $8.37 | | 10 - 14 | 10 % | $8.10 | | 15+ | 15 % | $7.65 | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ----- | | 1 - 2 | — | $9.00 | | 3 - 4 | 5 % | $8.55 | | 5 - 9 | 7 % | $8.37 | | 10 - 14 | 10 % | $8.10 | | 15+ | 15 % | $7.65 | SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 quantity Add to cart x [ Checkout ](https://www.soflypart.com/checkout/) * repair Covers 99% of Repair Needs * Wholesale Discounts * Fast Global Shipping * 24/7 Customer Support ## Product Description The **SEIKO (SII) NH38/NH39 Balance Complete With Stud (0310184)** is a genuine Seiko balance assembly for the NH38 and NH39 automatic movements. This complete unit includes the balance wheel, hairspring, and stud, and is factory-assembled in Japan to original Seiko specifications. It is designed for watchmakers to replace a damaged or worn balance during movement servicing or repair. ## Features & Function * **Genuine Seiko part** – authentic Japanese-made component for NH38 and NH39 movements * **Complete balance assembly** – includes balance wheel, hairspring, and stud, ready for installation * **Factory-assembled** – assembled to original Seiko specifications for correct timing * **Precision-engineered** – manufactured with Seiko’s quality standards for reliable timekeeping * **Direct replacement** – drop-in replacement for the original balance assembly ## Specifications * **Part Number**: 0310184 * **Compatible Movements**: Seiko NH38, NH39 (also fits NH35, NH36, NH37 variants according to some sources) * **Movement Frequency**: 21,600 vibrations per hour (3 Hz) * **Jewels**: 24 jewels (NH38/NH39) * **Origin**: Japan (Seiko / TMI) * **Condition**: Brand new ## Applications * **Service and overhaul** of Seiko NH38 and NH39 movements * **Balance assembly replacement** – replacing damaged, broken, or worn balance wheels and hairsprings * **Timekeeping restoration** – restoring correct amplitude and rate to the movement * Suitable for **professional watchmakers** and **experienced watch repair technicians** ## FAQs **1\. Is this a genuine Seiko / SII part?** Yes, this is a **genuine Seiko (TMI) factory part** made in Japan. It is not an aftermarket or generic copy. **2\. Which movements does this balance complete fit?** It fits **NH38 and NH39** movements. Some references indicate compatibility with **NH35, NH36, and NH37** as well, but the official parts code 0310197 is listed for NH35-37, while 0310198 is for NH38/39. **3\. What is the difference between the balance completes for NH35-37 and NH38-39?** The difference likely relates to the **balance geometry** associated with the open-heart design of the NH38/NH39 movements. ## Why Choose SOFLY Watch Parts? * Fast worldwide shipping within 3 business days. * Competitive pricing on Seiko/Hattori calibers. * 3,000+ watch movements and parts in stock. * Trusted by watchmakers worldwide. * Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**. ##### Our Popular Items [ ![Zenith El Primero 18.0240.4021 Crystal](https://www.soflypart.com/wp-content/uploads/2022/07/DSC09824.jpg) ](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/) ### [Generic Zenith El Primero Chronomaster 02.0310.400 Sapphire Crystal 29.85mm ](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/) [ ![Breguet Classique 8067 Sapphire Crystal](https://www.soflypart.com/wp-content/uploads/2022/04/DSC09612.jpg) ](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/) ### [Generic Breguet Classique 5920/5907 Sapphire Crystal 30.5mm ](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/) [ ![Hattori VD54/VD53 Circuit Block Electronic Module](https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-VD53-circuit.jpg) ](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/) ### [Hattori VD55/VD57 Circuit Block Electronic Module ](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/06/ETA-caliber-2000-1471-stop-pinion.jpg) ](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/) ### [ETA Caliber 2000-1471 Stop Pinion ](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/06/ETA-210.001-circuit.jpg) ](https://www.soflypart.com/product/eta-210-001-4000-circuit-block-electronic-module/) ### [ETA 210.001-4000 Circuit Block Electronic Module ](https://www.soflypart.com/product/eta-210-001-4000-circuit-block-electronic-module/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/06/DSC00416-1.jpg) ](https://www.soflypart.com/product/generic-rolex-spring-bar-kit-90-pcs/) ### [Generic Rolex Spring Bar Kit 90 Pcs ](https://www.soflypart.com/product/generic-rolex-spring-bar-kit-90-pcs/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/06/Cartier-caliber-1847-rotor.jpg) ](https://www.soflypart.com/product/cartier-caliber-1847-oscillating-weight-rotor/) ### [Cartier Caliber 1847 Oscillating Weight Rotor (return broken part) ](https://www.soflypart.com/product/cartier-caliber-1847-oscillating-weight-rotor/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/06/Cartier-caliber-175N-circuit.jpg) ](https://www.soflypart.com/product/cartier-circuit-block-for-caliber-175n/) ### [Cartier Circuit Block For Caliber 175N ](https://www.soflypart.com/product/cartier-circuit-block-for-caliber-175n/) [ ![TAG Heuer Carrera Sapphire Crystal 34.5mm](https://www.soflypart.com/wp-content/uploads/2023/09/DSC01806.jpg) ](https://www.soflypart.com/product/generic-tag-heuer-link-cjf2114-sapphire-crystal-34-5mm/) ### [Generic TAG Heuer Link CJF2114 Sapphire Crystal 34.5mm ](https://www.soflypart.com/product/generic-tag-heuer-link-cjf2114-sapphire-crystal-34-5mm/) [ ![Omega 215.30.46 Crystal](https://www.soflypart.com/wp-content/uploads/2023/09/DSC01995.jpg) ](https://www.soflypart.com/product/generic-omega-seamaster-aqua-terra-22-13-41-sapphire-crystal-34-5mm/) ### [Generic Omega Seamaster Aqua Terra 220.13.41 Sapphire Crystal 34.5mm ](https://www.soflypart.com/product/generic-omega-seamaster-aqua-terra-22-13-41-sapphire-crystal-34-5mm/) * [![Rado Coupole 115.3828.4 Crystal](https://www.soflypart.com/wp-content/uploads/2022/11/DSC00395-1.jpg)](https://www.soflypart.com/product/generic-rado-coupole-115-3828-4-sapphire-crystal-35mm/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-rado-coupole-115-3828-4-sapphire-crystal-35mm/) Watch Parts [Generic Rado Coupole 115.3828.4 Sapphire Crystal 35mm](https://www.soflypart.com/product/generic-rado-coupole-115-3828-4-sapphire-crystal-35mm/) $80.00 You Saved * [![Rolex Milgauss 116400 Crystal Gasket](https://www.soflypart.com/wp-content/uploads/2024/03/Rolex-crystal-gasket.jpg)](https://www.soflypart.com/product/generic-rolex-milgauss-116400-crystal-gasket/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-rolex-milgauss-116400-crystal-gasket/) Rolex Crystal Gasket [Generic Rolex Milgauss 116400 Crystal Gasket](https://www.soflypart.com/product/generic-rolex-milgauss-116400-crystal-gasket/) $8.00 You Saved * [![TAG Heuer CAF2110 Steel Crown Screw Down](https://www.soflypart.com/wp-content/uploads/2023/03/DSC01014.jpg)](https://www.soflypart.com/product/generic-tag-heuer-aquaracer-caf2110-steel-crown-screw-down-6-5mm/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-tag-heuer-aquaracer-caf2110-steel-crown-screw-down-6-5mm/) Watch Parts [Generic TAG Heuer Aquaracer CAF2110 Steel Crown 6.5mm, Screw Down](https://www.soflypart.com/product/generic-tag-heuer-aquaracer-caf2110-steel-crown-screw-down-6-5mm/) $25.00 You Saved * [![Rolex GMT-Master II 126710 Crystal B25-295](https://www.soflypart.com/wp-content/uploads/2023/03/Rolex-126622-crystal.jpg)](https://www.soflypart.com/product/generic-rolex-yacht-master-40-116622-sapphire-crystal/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-rolex-yacht-master-40-116622-sapphire-crystal/) Watch Parts [Generic Rolex Yacht-Master 40 126622 Sapphire Crystal](https://www.soflypart.com/product/generic-rolex-yacht-master-40-116622-sapphire-crystal/) $45.00 You Saved * [![Rado eSenza Crystal 29.5mm](https://www.soflypart.com/wp-content/uploads/2022/11/DSC00613.jpg)](https://www.soflypart.com/product/generic-rado-esenza-sapphire-crystal-29-5mm-2-colors/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-rado-esenza-sapphire-crystal-29-5mm-2-colors/) Watch Parts [Generic Rado eSenza Sapphire Crystal 29.5mm (2 colors)](https://www.soflypart.com/product/generic-rado-esenza-sapphire-crystal-29-5mm-2-colors/) $80.00 You Saved * [![Breitling Superocean 44 M1739313 Crystal](https://www.soflypart.com/wp-content/uploads/2022/04/DSC09433.jpg)](https://www.soflypart.com/product/generic-breitling-super-avenger-a1337111-sapphire-crystal-32mm/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-breitling-super-avenger-a1337111-sapphire-crystal-32mm/) Watch Parts [Generic Breitling Super Avenger A1337111 Sapphire Crystal 32mm](https://www.soflypart.com/product/generic-breitling-super-avenger-a1337111-sapphire-crystal-32mm/) $60.00 You Saved * [![Omega Seamaster Diver 2220.80 Tube 090ST4203](https://www.soflypart.com/wp-content/uploads/2023/07/DSC01432.jpg)](https://www.soflypart.com/product/generic-omega-seamaster-diver-2220-80-tube-090st4203/) Quick View [Add to Cart](https://www.soflypart.com/product/generic-omega-seamaster-diver-2220-80-tube-090st4203/) Watch Parts [Generic Omega Seamaster Diver 2220.80 Tube 090ST4203](https://www.soflypart.com/product/generic-omega-seamaster-diver-2220-80-tube-090st4203/) $12.00 You Saved * [![Ronda Hour Wheel 1062 Gear Component](https://www.soflypart.com/wp-content/uploads/2019/05/1062H.jpg.webp)](https://www.soflypart.com/product/ronda-1062-movement-hour-wheel/) Quick View [Add to Cart](https://www.soflypart.com/product/ronda-1062-movement-hour-wheel/) Watch Movement Parts [Ronda 1062 Hour Wheel](https://www.soflypart.com/product/ronda-1062-movement-hour-wheel/) $1.30 You Saved * [![ETA 7750-255 Hour Wheel](https://www.soflypart.com/wp-content/uploads/2019/06/7750hw.jpg.webp)](https://www.soflypart.com/product/eta-7750-movement-hour-wheel/) Quick View [Add to Cart](https://www.soflypart.com/product/eta-7750-movement-hour-wheel/) Watch Movement Parts [ETA 7750-255 Hour Wheel](https://www.soflypart.com/product/eta-7750-movement-hour-wheel/) $4.00 You Saved * [![Omega 8500 Movement Stop Lever](https://www.soflypart.com/wp-content/uploads/2019/06/8500A56070.jpg.webp)](https://www.soflypart.com/product/omega-8500-movement-stop-lever-7228500a56070/) Quick View [Add to Cart](https://www.soflypart.com/product/omega-8500-movement-stop-lever-7228500a56070/) Watch Parts [Omega 8500 Movement Stop Lever 7228500A56070](https://www.soflypart.com/product/omega-8500-movement-stop-lever-7228500a56070/) $60.00 You Saved ```json {"@context":"https://schema.org","@graph":[{"@type":["Store","Organization"],"@id":"https://www.soflypart.com/#organization","name":"Sofly","url":"https://www.soflypart.com","logo":{"@type":"ImageObject","@id":"https://www.soflypart.com/#logo","url":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","contentUrl":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","caption":"Soflypart","inLanguage":"en-US","width":"180","height":"62"},"openingHours":["Monday,Tuesday,Wednesday,Thursday,Friday,Saturday,Sunday 09:00-17:00"],"image":{"@id":"https://www.soflypart.com/#logo"}},{"@type":"WebSite","@id":"https://www.soflypart.com/#website","url":"https://www.soflypart.com","name":"Soflypart","publisher":{"@id":"https://www.soflypart.com/#organization"},"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg","url":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg","width":"580","height":"580","caption":"SEIKO (SII) NH38/NH39 Balance Complete","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https://www.soflypart.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/","name":"SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184"}}]},{"@type":"WebPage","@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/#webpage","url":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/","name":"SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 - Sofly","datePublished":"2019-06-24T06:41:30+08:00","dateModified":"2026-07-29T16:56:21+08:00","isPartOf":{"@id":"https://www.soflypart.com/#website"},"primaryImageOfPage":{"@id":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg"},"inLanguage":"en-US","breadcrumb":{"@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/#breadcrumb"}},{"@type":"ProductGroup","name":"SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 - Sofly","description":"Genuine Seiko NH38/NH39 balance complete with stud 0310184. Japanese-made balance assembly for automatic movement repair and restoration.","sku":"210144","category":"Watch Parts > Watch Movement Parts","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance.jpg","height":"580","width":"580"},{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39b.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/","productGroupID":"210144","hasVariant":[{"@type":"Product","sku":"210144","name":"SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184 - SEIKO","description":"Product Description The\u00a0SEIKO (SII) NH38/NH39 Balance Complete With Stud (0310184)\u00a0is a genuine Seiko balance assembly for the NH38 and NH39 automatic movements. This complete unit includes the balance wheel, hairspring, and stud, and is factory-assembled in Japan to original Seiko specifications. It is designed for watchmakers to replace a damaged or worn balance during movement servicing or repair. Features & Function Genuine Seiko part\u00a0\u2013 authentic Japanese-made component for NH38 and NH39 movements Complete balance assembly\u00a0\u2013 includes balance wheel, hairspring, and stud, ready for installation Factory-assembled\u00a0\u2013 assembled to original Seiko specifications for correct timing Precision-engineered\u00a0\u2013 manufactured with Seiko's quality standards for reliable timekeeping Direct replacement\u00a0\u2013 drop-in replacement for the original balance assembly Specifications Part Number: 0310184 Compatible Movements: Seiko NH38, NH39 (also fits NH35, NH36, NH37 variants according to some sources) Movement Frequency: 21,600 vibrations per hour (3 Hz) Jewels: 24 jewels (NH38/NH39) Origin: Japan (Seiko / TMI) Condition: Brand new Applications Service and overhaul\u00a0of Seiko NH38 and NH39 movements Balance assembly replacement\u00a0\u2013 replacing damaged, broken, or worn balance wheels and hairsprings Timekeeping restoration\u00a0\u2013 restoring correct amplitude and rate to the movement Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced watch repair technicians FAQs 1. Is this a genuine Seiko / SII part? Yes, this is a\u00a0genuine Seiko (TMI) factory part\u00a0made in Japan. It is not an aftermarket or generic copy. 2. Which movements does this balance complete fit? It fits\u00a0NH38 and NH39\u00a0movements. Some references indicate compatibility with\u00a0NH35, NH36, and NH37\u00a0as well, but the official parts code 0310197 is listed for NH35-37, while 0310198 is for NH38/39. 3. What is the difference between the balance completes for NH35-37 and NH38-39? The difference likely relates to the\u00a0balance geometry\u00a0associated with the open-heart design of the NH38/NH39 movements. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2019/06/nh39-balance-150x150.jpg","offers":{"@type":"Offer","description":"Product Description The\u00a0SEIKO (SII) NH38/NH39 Balance Complete With Stud (0310184)\u00a0is a genuine Seiko balance assembly for the NH38 and NH39 automatic movements. This complete unit includes the balance wheel, hairspring, and stud, and is factory-assembled in Japan to original Seiko specifications. It is designed for watchmakers to replace a damaged or worn balance during movement servicing or repair. Features & Function Genuine Seiko part\u00a0\u2013 authentic Japanese-made component for NH38 and NH39 movements Complete balance assembly\u00a0\u2013 includes balance wheel, hairspring, and stud, ready for installation Factory-assembled\u00a0\u2013 assembled to original Seiko specifications for correct timing Precision-engineered\u00a0\u2013 manufactured with Seiko's quality standards for reliable timekeeping Direct replacement\u00a0\u2013 drop-in replacement for the original balance assembly Specifications Part Number: 0310184 Compatible Movements: Seiko NH38, NH39 (also fits NH35, NH36, NH37 variants according to some sources) Movement Frequency: 21,600 vibrations per hour (3 Hz) Jewels: 24 jewels (NH38/NH39) Origin: Japan (Seiko / TMI) Condition: Brand new Applications Service and overhaul\u00a0of Seiko NH38 and NH39 movements Balance assembly replacement\u00a0\u2013 replacing damaged, broken, or worn balance wheels and hairsprings Timekeeping restoration\u00a0\u2013 restoring correct amplitude and rate to the movement Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced watch repair technicians FAQs 1. Is this a genuine Seiko / SII part? Yes, this is a\u00a0genuine Seiko (TMI) factory part\u00a0made in Japan. It is not an aftermarket or generic copy. 2. Which movements does this balance complete fit? It fits\u00a0NH38 and NH39\u00a0movements. Some references indicate compatibility with\u00a0NH35, NH36, and NH37\u00a0as well, but the official parts code 0310197 is listed for NH35-37, while 0310198 is for NH38/39. 3. What is the difference between the balance completes for NH35-37 and NH38-39? The difference likely relates to the\u00a0balance geometry\u00a0associated with the open-heart design of the NH38/NH39 movements. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"9","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/?attribute_pa_brand=brand-seiko"}}],"@id":"https://www.soflypart.com/product/tmi-seiko-nh39-movement-balance-wheel/#richSnippet"}]} ```