An electrical tool supplier audit should answer one purchasing question: can this supplier repeatedly deliver the approved tool, with traceable evidence and controlled changes? A polished sample, an attractive catalog and a quality certificate cannot answer that question alone. Buyers need to follow actual production records, observe relevant operations and define what would stop an order regardless of the overall score.
Use the checklist below as a buyer-designed audit method, not a certification scheme. Its sample counts, weights and approval thresholds are proposed procurement rules to agree before the audit. Product tolerances, safety requirements and test limits must come from approved drawings, applicable requirements and model-specific instructions, never from the scorecard itself.
Contents: Scope | Evidence | Scorecard | Decision | Closure | Sourcing
Scope
Define the supplier and the product boundary
Record the legal entity, audited address, production location, selected SKUs, drawing revisions, intended applications and subcontracted operations. Distinguish a manufacturer, assembler and trading company. Each can have a legitimate role, but the buyer must know who controls materials, processing, final inspection and changes. An office audit cannot establish control of an unidentified production site.
Start with the TONFUL electrical tools range to identify the relevant family. Do not treat approval of a manual stripper as approval of a hydraulic tool or powered machine. Different mechanisms introduce different maintenance, safety and verification needs. Define separate scope lines when facilities or critical processes differ.
List acceptance-source documents before arranging demonstrations. For example, a stripping evaluation needs the intended conductor construction, insulation and required strip condition. The stripping tool catalog helps shortlist models; the actual audit must establish which selected model and cable combination the supplier can substantiate.
Agree confidentiality, auditor competence, access, photography restrictions and records available remotely. Restricted evidence is not automatically a defect, but an unanswered essential question cannot become a passing result. Record the restriction and identify an acceptable alternative, such as supervised review of redacted original records.
Set a safe observation plan
Observe idle tools first. Isolate circuits and have qualified personnel verify a safe state through the applicable procedure before tool trials. Ordinary grips are not proof of insulation or authorization for live work. Keep hands away from blades, pinch points and moving jaws. For battery or hydraulic maintenance, remove power and release stored energy only under the manufacturer’s procedure.
Machine observations must cover guarding, interlocks, authorized training and approved trials without bypassing safeguards. A copper or aluminum cutting claim does not authorize steel, ACSR or live-cable cutting. Check the selected cutting tool documentation rather than transferring one model’s application to another.
Evidence
Follow one risk through the complete record trail
Select a consequential failure mode, such as jaw misalignment or an incorrect stripping setting. Follow Process Flow -> PFMEA -> Control Plan -> Work Instruction -> Inspection Record. Confirm the same characteristic, revision, inspection method and reaction appear throughout. A control plan that says inspect without identifying the method, frequency or response is not an executable control.
For context, ISO 19011:2026 provides guidelines for auditing management systems. The purchasing matrix here is an editorial implementation aid, not a claim that ISO prescribes these weights or sample counts. Auditors should distinguish observed evidence, supplier statements and conclusions requiring further verification.
Sample ordinary production, not only a display batch. Choose records across shifts, dates, operators and process changes where those variations exist. Record the population, selection method and limitations. Expand sampling when a contradiction appears; a small clean sample cannot prove the entire population conforms. Product acceptance sampling remains a separate, approved plan.
Inspect measurement suitability as well as calibration status. Ask whether gauge range, resolution and uncertainty suit the characteristic, and whether MSA or GR&R supports operator-dependent decisions. Review SPC only where meaningful process data exist. Capability calculations require a suitable measurement system, stable process and agreed specification; a capability number without those foundations is not reassuring evidence.
Ask operators to show first-piece approval and verification after tool changes, material changes, restart or maintenance. Review the corresponding reaction records. For crimp-related scope, maintenance and calibration considerations can prompt questions, but approved assembly documents govern the actual acceptance limits.
Scorecard
Copy the matrix into your audit workbook
Weights total 100. Each row receives an integer score: 0 means absent or contradicted; 1 means informal assertion; 2 means documented but inconsistently implemented; 3 means implemented with identifiable gaps; 4 means consistent sampled evidence; 5 means consistent evidence plus demonstrated effectiveness. These are buyer assessment anchors, not universal industry grades.
The suggested sample quantities below are audit starting requirements, not statistically justified lot-acceptance quantities. If fewer records exist, inspect all available records, document the shortfall and decide whether approval must wait for additional production evidence. Split a row into separately weighted questions before the audit if its risks cannot reasonably share a score.
| ID | Audit Question | Risk | Weight | Evidence to Sample | Sample Size Requirement | Finding | Score | NC Level | Owner | Due Date | Closure Evidence |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A1 | Are entity, site and revisions controlled? | Wrong source | 10 | Contracts, drawings, revision history | Three SKU files | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Approved files |
| A2 | Does the full process trail agree? | Uncontrolled characteristic | 20 | Flow, PFMEA, plan, instruction, records | Two critical characteristics end-to-end | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Reconciled trail |
| A3 | Are materials and external processes controlled? | Substitution | 15 | Receipts, supplier approvals, outsourced plating records if applicable | Three material lots and all critical subcontractors | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Verified source controls |
| A4 | Are measurement and change-point checks effective? | False acceptance | 20 | Calibration, MSA, SPC where applicable, first-piece records | Three gauges and three change events | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Validated measurement and checks |
| A5 | Can lots be contained and traced? | Escaping defects | 15 | Lot genealogy, stock locations, shipment records | One backward and forward drill plus mock recall | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Reconciled drill |
| A6 | Are operators and equipment controlled? | Injury or process drift | 10 | Training authorization, maintenance, safeguards | Two operators and two relevant stations | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Observed safe operation |
| A7 | Do complaints and delivery actions stay effective? | Repeat failure | 10 | Returns, delivery data, corrective actions | Three cases or all available | Enter evidence IDs | Enter 0-5 | Enter level | Name | Date | Effectiveness review |
Calculate without hiding missing evidence
For fully applicable rows, total score equals the sum of weight multiplied by score divided by five. If A1 through A7 receive 4, 4, 3, 4, 5, 4 and 3, the weighted result is 78/100. This worked example illustrates arithmetic only; it does not represent an audited supplier.
N/A requires the auditor’s written rationale and buyer approval that the entire row is outside scope. Remove that row’s weight and normalize: result equals 100 multiplied by the earned weighted points divided by the remaining applicable weights. Report both the excluded rows and the remaining denominator. Never mark missing records N/A.
Not Evaluated means an applicable question remains unanswered. Keep it visible, do not convert it to a favorable numeric score and do not issue final approval. A provisional numeric subtotal may be shown, labeled incomplete, but it cannot meet the approval threshold. Record the evidence needed, responsible person and review date.
Decision
Adopt this proposed rule before auditing: 85 or more permits approval consideration; 70 through less than 85 requires corrective action and reassessment; below 70 means not approved. Even 100 cannot override a knockout, an open Major or a Not Evaluated applicable row. The buyer’s quality authority signs the disposition; procurement cannot silently waive it to meet a shipment date.
A Major is a missing or failed systemic control, or a failure capable of releasing unsafe or materially nonconforming product. A Minor is an isolated lapse where the underlying control remains effective and no consequential escape is indicated. Repeated Minors may establish a Major. Assign severity from risk and evidence independently of the numerical score.
Knockouts include falsified evidence, unidentified actual production sources, deliberate unapproved substitution, refusal of essential traceability access without an acceptable alternative, or a demonstrated uncontrolled serious safety hazard. Stop the affected evaluation, contain exposed orders and refer the decision to the buyer’s designated authority. A favorable score elsewhere cannot compensate.
Use evidence identifiers such as E-A4-01 linked to document revision, lot, date and observation. Findings should state criterion, observed condition, scope and consequence without guessing root cause. Supplier disagreement belongs in the report alongside the evidence, not in an erased finding. Record any interim restrictions explicitly, including which SKUs cannot ship.
Closure
Verify correction, cause and effectiveness separately
Every finding needs a supplier owner, agreed due date, containment, root-cause evidence, permanent action and buyer verifier. Set dates according to risk before releasing the report; do not leave them as whenever convenient. Confirm affected inventory, work in progress and shipped lots are covered by containment, including subcontractor stock where relevant.
Closure requires evidence that the action addresses the confirmed cause, updated controlled documents, trained affected personnel and successful verification on subsequent relevant production. A photograph of a new instruction proves posting, not effectiveness. Agree the follow-up population and observation window before review. Reopen the finding if recurrence or contradictory evidence appears.
Monitor ongoing supplier performance with defined denominators: accepted units versus inspected units, on-time deliveries versus scheduled deliveries, repeat findings versus closed findings, and corrective actions closed by agreed dates versus actions due. Separate supplier-caused delays from buyer changes. Review trends by SKU and site so a high-volume easy item cannot hide failure in a critical tool.
Define escalation triggers in the supplier agreement: overdue Major closure, repeat escape, failed trace drill or unauthorized change should trigger shipment hold, increased verification or re-audit as appropriate. Restoration needs quality-authority approval after effectiveness evidence, not merely a promise or a revised spreadsheet score.
Sourcing
Keep the audit report, evidence index, completed matrix, exclusions and signed disposition together. Supplier approval establishes a controlled relationship within a defined scope; it does not replace sample qualification, purchase specifications or incoming verification. Revisit the scope when the tool, production site, critical subcontractor or intended application changes.
Send your selected models, intended materials, audit scope and required evidence to TONFUL’s enquiry team. Ask which records, model documentation and review arrangements are available for your project before agreeing sample or production approval. Confirm capability in writing rather than treating catalog presence as proof of every audit requirement.