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Johnson & Starley Hook Nut 4mm SIT 1000-0701800

Johnson & Starley

Johnson & Starley Hook Nut 4mm SIT 1000-0701800

4mm SIT hook nut manufactured by Johnson & Starley for Hispec warm air units, part number 1000-0701800.

At a glance

  • Also known as 1690064
Manufacturer part no.
1000-0701800
GC number
245-432
Showing prices

£5.00

£4.17 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Hook Nut 4mm SIT is a small fastening component manufactured by Johnson & Starley for use on Hispec warm air units. It forms part of the gas section fixings on these appliances, securing components in place where a 4mm hook fixing is required. It is supplied under Johnson & Starley part number 1000-0701800.

Signs this part needs replacing

  • The hook nut is missing from the assembly it should secure
  • The thread or hook is stripped, rounded or will not tighten
  • Corrosion or heat damage has weakened the fixing
  • A component it retains is loose or vibrating in service
  • The nut has been cross-threaded or seized during previous work

Before you order

  • Confirm the appliance model against the fitment list above
  • Check the existing fixing is a 4mm SIT hook nut before ordering
  • Verify the part number 1000-0701800 matches the one required for your unit
  • Check whether any other fixings disturbed during the same job also need replacing

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.