Parts list · Speedmaster

Omega 861 parts list: the parts people hunt, and what else fits

The calibre 861 is the manual-wind chronograph in the Speedmaster Professional from 1968. Omega lists 148 part numbers for it in its technical guide and the GF 620-4 catalogue. Here are the ones people hunt, with the Speedmaster calibres that share each one, so you know which donor movement can supply it.

Find 861 parts on eBay

Whole movements and donors first. The parts people hunt have their own searches below.

861 movementcomplete, for a swap or partsFor sale now What they sold for
861 partsloose parts and lotsFor sale now What they sold for
865 movementdonor: shares many 861 partsFor sale now What they sold for
863 movementthe decorated 861For sale now What they sold for

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What else fits

107of the 148 parts are also listed for the 863, the decorated 861

87are also listed for the 860, the 861's catalogue parent

63are also listed for the 865, the Chronostop movement

The 861 was built on the 860, and the 865 in the Chronostop comes from the same family, so a broken 865 or 860 is a parts source for an 861. The 865 parts list shows the same interchange from the Chronostop side. The Flightmaster's 910 and 911 are built on the 860 too.

Match the finish as well as the number. Plates and bridges come in two finishes: pink (no suffix, or R) and yellow (J). An 861.1000J main plate and an 861.1000R are the same part in different colours, and a movement built from both will show it.

Measure the case-dependent parts. The pusher stems (093ST0015, 0016, 0017, 0023) and the operating lever extensions (093ST0024, 0025, 0026) come in different lengths or thicknesses for different cases. The right one depends on the case, not the movement.

Looking for one part across every calibre? Search it in the parts finder.

The parts people hunt

Nineteen of the 861's 148 parts: the ones that wear, break or go missing, and the ones that sell. Each has a live eBay search, and Every fit opens that part in the parts finder with every calibre it fits.

Part no.	Part	Also listed for	Find it
860.1208	Mainspring	860, 863, 865	eBay Every fit
861.1200	Barrel with arbor, driving pinion and friction spring	863	eBay Every fit
860.1106	Winding stem	860, 863	eBay Every fit
860.1109	Setting lever	860, 863, 865	eBay Every fit
320.1111	Yoke	860, 863, 865	eBay Every fit
861.1218	Cannon pinion, H1	863	eBay Every fit
860.1305	Escape wheel pivoted	860, 863, 865	eBay Every fit
860.1316	Jewelled pallet fork and staff	860, 863, 865	eBay Every fit
860.1321	Balance staff, pivoted	860, 863, 865	eBay Every fit
860.1327	Balance with hairspring, regulated	860, 863, 865	eBay Every fit
860.1030	Balance cock	860, 865	eBay Every fit
860.1347	Incabloc, upper	860, 863, 865	eBay Every fit
860.1712	Coupling wheel	860, 863, 865	eBay Every fit
860.1720	Operating lever, mounted	860	eBay Every fit
860.1728	Hammer, mounted	860	eBay Every fit
861.1705	Chronograph runner, mounted	863	eBay Every fit
860.1766	Minute-recording jumper, mounted	860, 863	eBay Every fit
861.1774	Hour recorder yoke, mounted	861 only	eBay Every fit
2372	Screw for dial	860, 863	eBay Every fit

The other 129 parts, from screws and jewels to springs and bridges, are in the parts finder. Type a part number, or the calibre and the part name. Search the 861's parts

Source: Omega's Technical Guide for the 861 (G-19-C-030-FDE, rev A, 2004) and the GF 620-4 catalogue sections for the 860 and 865, as transcribed into the Watch Breaker parts database. "Also listed for" means the same part number is printed for that calibre in the Speedmaster family (860, 863 and 865); some 863 entries are carried over from the 861 base. The parts finder shows every calibre a part fits. If you find a mistake, email id@watchbreaker.com and I'll check it against the page.

Not sure it's an 861?

The 861 and the 321 before it look similar at a glance. The 321 has a column wheel and beats at 18,000; the 861 has none and beats at 21,600. The Speedmaster guide shows how to tell them apart, and the calibre lookup covers the rest of the family.

Buying parts for a watch you're not sure of?

Six photographs and the weight, and I put it in writing: calibre confirmed against its factory sheet, case checked against Omega's own case data, serial dated, dial judged, three honest values. Within a day. US$75, and nothing to pay until I confirm the photos can answer it.

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Questions people ask

Do 860 parts fit an 861?

Many do. Of the 148 part numbers Omega lists for the 861, 87 are also listed for the 860, including most of the chronograph works, the balance and the escapement. Match the part number, not the calibre name; the parts finder shows every calibre a part number fits.

Are 863 parts the same as 861 parts?

Mostly. The 863 is a decorated 861, and 107 of the 861's 148 part numbers are also listed for it. The differences are finish: plates and bridges come in pink and yellow versions, marked by the suffix on the part number.

What does the J on an Omega part number mean?

On the 861 list it marks the yellow-finished version of a plate or bridge, such as 861.1000J against the pink 861.1000R. The part is the same shape; the finish is different, and a mixed movement will show it.

Where can I buy Omega 861 parts?

Swatch Group stopped supplying spare parts to independent wholesalers at the end of 2015, so most 861 parts now come from used stock and donor movements. The parts people hunt are listed on this page with live eBay searches, and the parts finder shows which donor movements share any part.

Watch Breaker is an independent identification specialist and parts dealer and is not affiliated with, endorsed by or connected to Omega SA or the Swatch Group. Omega is a trademark of Omega SA. Part numbers are Omega's, transcribed from printed technical guides and catalogues; no catalogue pages are reproduced. Terms.