---
title: "Torque Wrench"
industry: "Repair and Installation of Machinery and Equipment"
verification_protocol:
  urn: "URN:CNFX:ME:TORQUE_WRENCH"
  data_integrity_hash: "5ec750c0c19a06b65aae896e743acec9"
  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:TORQUE_WRENCH"
  data_source_uri: "https://cnfx.com/llms/industry/repair-installation-machinery-equipment/product/torque-wrench.md"
  official_resource_url: "https://cnfx.com/industry/repair-installation-machinery-equipment/product/torque-wrench"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "5-200 N·m (Newton-meters) for standard industrial models, with specialized variants reaching 0.1-1000 N·m"
    unit: "N·m"
engineering_limits:
  max_safe_operating_point:
    value: 20
    unit: "°C"
    consequence: "Plastic deformation of the torsion bar or spring element exceeding the material's yield strength (typically 600-800 MPa for chromium-vanadium steel), causing permanent calibration drift"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Over-torque application exceeding 150% of rated capacity"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate a mechanical torque limiter clutch with a shear pin rated at 110% of maximum torque"
  - node_2:
      trigger: "Cyclic loading at 85-95% of rated torque for &gt;10^5 cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement finite element analysis (FEA) optimized ribbing with a safety factor of 4.0 against fatigue failure"
bom_nodes:
  torque-adjustment-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:TORQUE_ADJUSTMENT_MECHANISM"
    interface_type: "physical-logic-coupled"
  releaseclick-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:RELEASECLICK_MECHANISM"
    interface_type: "physical-logic-coupled"
  drive-head:
    type: "component"
    urn: "URN:CNFX:ME:DRIVE_HEAD"
    interface_type: "physical-logic-coupled"
  handlegrip:
    type: "component"
    urn: "URN:CNFX:ME:HANDLEGRIP"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 6789-1:2017 - ASSEMBLY TOOLS FOR SCREWS AND NUTS - HAND TORQUE TOOLS - REQUIREMENTS AND TEST METHODS FOR DESIGN CONFORMANCE TESTING AND QUALITY CONFORMANCE TESTING"
    scope: "Verified Engineering Specification"
  - standard: "ASME B107.300-2010 - TORQUE INSTRUMENTS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN ISO 6789-1:2017 - ASSEMBLY TOOLS FOR SCREWS AND NUTS - HAND TORQUE TOOLS - REQUIREMENTS AND TEST METHODS FOR DESIGN CONFORMANCE TESTING AND QUALITY CONFORMANCE TESTING"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/repair-installation-machinery-equipment/product/torque-wrench.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "89a6ea0a513720202d40bae190aa7fd46a202b247b8d786212b7d859177884e3"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Torque Wrench

## 1. Technical Definition
A precision tool used to apply a specific torque to a fastener such as a nut or bolt.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **5-200 N·m (Newton-meters) for standard industrial models, with specialized variants reaching 0.1-1000 N·m**. Failure boundary: **±3% of calibrated torque value at 20°C ambient temperature, beyond which measurement accuracy degrades below ISO 6789:2017 Class B requirements**, Mechanism: **Plastic deformation of the torsion bar or spring element exceeding the material's yield strength (typically 600-800 MPa for chromium-vanadium steel), causing permanent calibration drift**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Over-torque application exceeding 150% of rated capacity | 8 | Shear fracture of the square drive anvil at the stress concentration point | Integrate a mechanical torque limiter clutch with a shear pin rated at 110% of maximum torque |
| Cyclic loading at 85-95% of rated torque for &gt;10^5 cycles | 8 | Fatigue crack propagation in the spring housing leading to catastrophic spring release | Implement finite element analysis (FEA) optimized ribbing with a safety factor of 4.0 against fatigue failure |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Torque Adjustment Mechanism](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/torque-adjustment-mechanism.md) `(Standalone System)`
- [Release/Click Mechanism](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/releaseclick-mechanism.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Torque Calibration Tester**, **Fastener Cleaning Station**, **Digital Torque Analyzer**  
**Downstream Applications**: Assembled Engine Blocks, Industrial Machinery Frames, Precision Gearbox Assemblies  

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

### Q: What is the advantage of using a torque wrench in machinery repair?
**A**: A torque wrench ensures fasteners are tightened to exact specifications, preventing under-tightening (which can cause loosening) or over-tightening (which can damage components or threads), crucial for machinery safety and longevity.

### Q: How does the click mechanism in this torque wrench work?
**A**: The click mechanism emits an audible click and slight release when the preset torque is reached, providing tactile and auditory feedback to prevent over-torquing, making it ideal for repetitive industrial applications.

### Q: Why is chrome vanadium steel used in this torque wrench?
**A**: Chrome vanadium steel offers high strength, durability, and corrosion resistance, ensuring the wrench withstands heavy use in industrial environments while maintaining calibration accuracy over time.

## 6. Manufacturing Compliance
- ISO 6789-1:2017 - ASSEMBLY TOOLS FOR SCREWS AND NUTS - HAND TORQUE TOOLS - REQUIREMENTS AND TEST METHODS FOR DESIGN CONFORMANCE TESTING AND QUALITY CONFORMANCE TESTING
- ASME B107.300-2010 - TORQUE INSTRUMENTS
- DIN EN ISO 6789-1:2017 - ASSEMBLY TOOLS FOR SCREWS AND NUTS - HAND TORQUE TOOLS - REQUIREMENTS AND TEST METHODS FOR DESIGN CONFORMANCE TESTING AND QUALITY CONFORMANCE TESTING

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Torque Wrench](https://cnfx.com/industry/repair-installation-machinery-equipment/product/torque-wrench)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: TORQUE_WRENCH | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9ca6e68c
