---
title: "Tumbler Set"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TUMBLER_SET"
  data_integrity_hash: "d906efa5adb4b2ef01fa0d38773d0b88"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:TUMBLER_SET"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/tumbler-set.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/tumbler-set"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 mm pin displacement, 0.1-0.3 N·m rotational torque, 0.01-0.05 mm manufacturing tolerance"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 420
    unit: "MPa"
    consequence: "Adhesive wear (Archard's wear equation: V = K·W·L/H) at pin-key interfaces due to cyclic sliding contact under Hertzian contact pressures exceeding 1.2 GPa, leading to plastic deformation and loss of dimensional precision"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (ISO 12103-1 A4 fine test dust) accumulating at 0.05 g/1000 cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Sealed labyrinth geometry with 0.02 mm clearance, IP67-rated dust seals, centrifugal contaminant ejection channels"
  - node_2:
      trigger: "Material fatigue at pin shear planes due to 10^6+ stress cycles at 350 MPa alternating stress"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Shot peening to induce 200-300 MPa compressive residual stress, case hardening to 60 HRC surface hardness with 0.3 mm case depth"
bom_nodes:
  driver-pins:
    type: "component"
    urn: "URN:CNFX:ME:DRIVER_PINS"
    interface_type: "physical-logic-coupled"
  key-pins:
    type: "component"
    urn: "URN:CNFX:ME:KEY_PINS"
    interface_type: "physical-logic-coupled"
  tumbler-springs:
    type: "component"
    urn: "URN:CNFX:ME:TUMBLER_SPRINGS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4531-1:2022 - GLASSWARE FOR CATERING SERVICES"
    scope: "Verified Engineering Specification"
  - standard: "ASTM C162-05(2019) - STANDARD TERMINOLOGY OF GLASS AND GLASS PRODUCTS"
    scope: "Verified Engineering Specification"
  - standard: "CE EN 12729:2003 - FOOD CONTACT MATERIALS AND ARTICLES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/tumbler-set.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "993bb3405e39b8d0cd894de75a85b3e5b9321a8383892e91de67cce1e95793dc"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Tumbler Set

## 1. Technical Definition
A set of precision pins or tumblers within an ignition lock cylinder that aligns with the key cuts to enable rotation and vehicle starting.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 mm pin displacement, 0.1-0.3 N·m rotational torque, 0.01-0.05 mm manufacturing tolerance**. Failure boundary: **Pin shear stress exceeding 420 MPa (SAE 1045 steel yield strength), wear depth &gt;0.1 mm, misalignment &gt;0.15 mm from keyway centerline**, Mechanism: **Adhesive wear (Archard's wear equation: V = K·W·L/H) at pin-key interfaces due to cyclic sliding contact under Hertzian contact pressures exceeding 1.2 GPa, leading to plastic deformation and loss of dimensional precision**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contaminant ingress (ISO 12103-1 A4 fine test dust) accumulating at 0.05 g/1000 cycles | 8 | Increased rotational resistance exceeding 0.4 N·m, preventing cylinder rotation | Sealed labyrinth geometry with 0.02 mm clearance, IP67-rated dust seals, centrifugal contaminant ejection channels |
| Material fatigue at pin shear planes due to 10^6+ stress cycles at 350 MPa alternating stress | 8 | Pin fracture at 45° shear plane, causing complete loss of rotational engagement | Shot peening to induce 200-300 MPa compressive residual stress, case hardening to 60 HRC surface hardness with 0.3 mm case depth |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Surface Grinding Machine**, **Heat Treatment Furnace**  
**Downstream Applications**: Ignition Lock Cylinder Assembly, Steering Column Assembly, Complete Vehicle Ignition System  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in these tumbler sets for durability?
**A**: Our tumbler sets are manufactured from high-quality brass alloy, stainless steel, and nickel-plated steel components to ensure corrosion resistance, precise alignment, and long-term reliability in motor vehicle ignition systems.

### Q: How do these tumbler sets improve vehicle security?
**A**: The precision-cut driver pins and key pins create unique key combinations that align perfectly with ignition lock cylinders, preventing unauthorized vehicle starting while ensuring smooth rotation for legitimate key operation.

### Q: Are these tumbler sets compatible with different vehicle models?
**A**: Yes, our tumbler sets are engineered to meet OEM specifications for various motor vehicle manufacturers. They include standardized BOM components (driver pins, key pins, tumbler springs) that can be customized for specific ignition system requirements.

## 6. Manufacturing Compliance
- ISO 4531-1:2022 - GLASSWARE FOR CATERING SERVICES
- ASTM C162-05(2019) - STANDARD TERMINOLOGY OF GLASS AND GLASS PRODUCTS
- CE EN 12729:2003 - FOOD CONTACT MATERIALS AND ARTICLES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Tumbler Set](https://cnfx.com/industry/motor-vehicle-manufacturing/product/tumbler-set)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: TUMBLER_SET | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8426a6f8
