SEIKO (SII) NH35/NH36/NH37 Yoke #0384183

Product Description

The SEIKO (SII) NH35/NH36/NH37 Yoke (#0384183) is a genuine Japanese-made component for the keyless works of these popular NH series automatic movements. As a critical part of the crown mechanism, the yoke positions the clutch wheel and sliding pinion, enabling reliable switching between winding, date-setting, and time-setting positions when the crown is operated. Replacing a worn or damaged yoke is the ideal solution for restoring proper crown function and reliable mode switching when keyless works issues occur. The NH37 adds a 24-hour indicator complication to the NH35 platform.

Features & Function

• Genuine Seiko/SII part – authentic Japanese-made component for NH35, NH36, and NH37 movements

• Keyless works component – positions the clutch wheel and sliding pinion for reliable crown mode switching

• NH family compatibility – compatible with the most popular NH series calibers, including NH35, NH36, and NH37

• Direct replacement – drop-in replacement for worn or damaged yokes

Specifications

• Part Number: 0384183

• Compatible Movements: Seiko NH35, NH36, NH37 (also known as 4R35/4R36/4R37)

• Movement Family: NH Series (Basic Mechanical Series)

• Movement Frequency: 21,600 vph (3 Hz)

• Jewels: 24

• Power Reserve: ~41 hours

• Hacking: Yes

• Hand-Winding: Yes

• Winding Direction: Bi‑directional (Magic Lever)

• Origin: Japan

Applications

• Service and overhaul – replacing worn or damaged yokes in NH35/NH36/NH37 movements

• Keyless works repair – resolving issues with crown position switching or improper stem engagement

• Crown function restoration – ensuring smooth winding, date‑setting, and time‑setting operation

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine Seiko/SII part?

Yes, this is a genuine Seiko (SII/TMI) factory part made in Japan. The part number 0384183 is listed in Seiko parts documentation for the keyless works mechanism.

2. Which movements is this yoke compatible with?

This yoke is compatible with Seiko NH35, NH36, and NH37 movements. These are based on the same architecture, with differences in complications: NH35 is date-only, NH36 adds day-date, and NH37 adds a 24-hour indicator.

3. What are the signs that the yoke needs replacement?

Common signs include difficulty switching crown positions, the stem feeling stuck or loose, failure to engage winding/setting functions properly, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues during servicing.

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.

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• Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.