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Anti Theft Lock Specification Example for Fleet Maintenance: Two-Piece Construction

Source:Train Axle / Time:2026-09-18

Anti Theft Lock Specification Example for Fleet Maintenance: Two-Piece Construction

This is a worked specification for anti theft lock in a two-piece construction 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 two-piece construction version exists because the duty cycle on fleet maintenance is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually inconsistent hardness between lots.

Anti Theft Lock

Example specification

ItemAnti Theft Lock
ApplicationFleet Maintenance
VersionTwo-Piece Construction
Base materialAnodised Aluminium
Controlled dimensions5 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishanodised
MOQ1,000 pieces per specification
Sampling7 working days, 5 days per revision
ComplianceDOT

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Anodised Aluminium, 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.

Anti Theft Lock example

Processes involved

  • die casting
  • injection moulding
  • heat treatment
  • laser cutting
  • gravity casting
  • sintering

Where this example applies

Programmes that run two-piece construction most often specify this build for fleet maintenance. Related applications include municipal fleets, export programmes, city buses, camper conversions, assembly programmes.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 2.5 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.

How long does sampling take?

Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.

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 DOT-compliant build instead of a fresh interpretation.

Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.

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