Worcester Bosch
Worcester Bosch Flanged Backnut 1 Inch BSP 87161402930
Flanged backnut with a 1 inch BSP thread, manufactured by Worcester Bosch for CDi and Highflow 400 gas boilers.
At a glance
- Part type: flanged backnut
- Also known as 1017357
£7.37
£6.14 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Worcester Bosch 87161402930 is a flanged backnut with a 1 inch BSP thread. It is used across the Worcester CDi and Highflow 400 gas boiler families to secure a threaded connection against a panel or bracket. The flanged face spreads the clamping load over the mating surface.
Signs this part needs replacing
- Corrosion or rust on the nut body or flange
- Rounded or damaged flats where a spanner locates
- Cross-threaded or stripped threads
- Weeping or a visible leak at the joint the nut secures
- The nut will not tighten down or hold its position
Before you order
- Confirm the connection requires a 1 inch BSP thread.
- Check your boiler model against the fit list above.
- Inspect the mating fitting and any washer, as these may also need attention.
Compliance
| GC number | E04-622 |
|---|---|
| Barcode / EAN | 4010009721772 |
| Alternative numbers | 1017357 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 26 CDI RSF NG | 47-311-41 | 47-311-41 | — | — |
| WORCESTER 26 CDI XTRA RSF LPG | 47-311-42 | 47-311-42 | — | — |
| WORCESTER 26 CDI XTRA RSF NG | 47-311-41 | 47-311-41 | — | — |
| WORCESTER HIGHFLOW 400 BF COMBI LPG | 47-311-22 | 47-311-22 | — | — |
| WORCESTER HIGHFLOW 400 BF COMBI NG | 47-311-19 | 47-311-19 | — | — |
| WORCESTER HIGHFLOW 400 ELECTRONIC BF NG | 47-311-62 | 47-311-62 | — | — |
| WORCESTER HIGHFLOW 400 ELECTRONIC FSN NG | 47-311-61 | 47-311-61 | — | — |
| WORCESTER HIGHFLOW 400 ELECTRONIC FSP NG | 47-311-64 | 47-311-64 | — | — |
| WORCESTER HIGHFLOW 400 ELECTRONIC OF NG | 47-311-63 | 47-311-63 | — | — |
| WORCESTER HIGHFLOW 400 OF COMBI LPG | 47-311-23 | 47-311-23 | — | — |
Showing 10 of 13 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
WORCESTER appliance manual — 26 CDI RSF NG (GC 47-311-41), 26 CDI XTRA RSF LPG (GC 47-311-42), 26 CDI XTRA RSF NG (GC 47-311-41)
manualmanualWORCESTER appliance manual — HIGHFLOW 400 BF COMBI LPG (GC 47-311-22), HIGHFLOW 400 BF COMBI NG (GC 47-311-19)
manualmanualWORCESTER appliance manual — HIGHFLOW 400 ELECTRONIC BF NG (GC 47-311-62), HIGHFLOW 400 ELECTRONIC FSP NG (GC 47-311-64), HIGHFLOW 400 ELECTRONIC OF NG (GC 47-311-63), HIGHFLOW 400 OF COMBI LPG (GC 47-311-23), HIGHFLOW 400 OF COMBI NG (GC 47-311-20)
manualmanualWORCESTER appliance manual — HIGHFLOW 400 ELECTRONIC FSN NG (GC 47-311-61)
manualmanualWORCESTER appliance manual — HIGHFLOW 400 RSF COMBI LPG (GC 47-311-21), HIGHFLOW 400 RSF COMBI NG (GC 47-311-18)
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