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Steel Spoke Specification Example for Workshop Replacements: Adjustable Type

Source:Cylinder Head Repair / Time:2026-09-18

Steel Spoke Specification Example for Workshop Replacements: Adjustable Type

This is a worked specification for steel spoke in a adjustable type programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The adjustable type version exists because the duty cycle on workshop replacements is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually lead time that slipped twice before bulk started.

Steel Spoke

Example specification

ItemSteel Spoke
ApplicationWorkshop Replacements
VersionAdjustable Type
Base materialCast Iron
Controlled dimensions6 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishanodised
MOQ200 pieces per specification
Sampling14 working days, 5 days per revision
ComplianceE-mark

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Cast Iron, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Steel Spoke example

Processes involved

  • precision stamping
  • anodising
  • injection moulding
  • die casting
  • ultrasonic cleaning
  • heat treatment

Where this example applies

Programmes that run adjustable type most often specify this build for workshop replacements. Related applications include dealership service, rental motorcycles, scooter fleets, agricultural trailers, aftermarket retail.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 1.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

Can you match an existing sample?

Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.

What is the minimum order quantity?

The standard MOQ is 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

How is packing specified?

Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.

Can the specification be held on file?

Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the E-mark-compliant build instead of a fresh interpretation.

Share a sample or a drawing and we will quote against a written specification, not against a photograph.

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