---
title: "Measuring Screw"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MEASURING_SCREW"
  data_integrity_hash: "0e2b969a4dd835a29417fdbab9416e1a"
  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:MEASURING_SCREW"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/measuring-screw.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/measuring-screw"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 N·m torque, 0.01-10 mm displacement, 316L stainless steel, -40°C to 150°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "Thread galling due to adhesive wear at contact pressures &gt; 1.5 GPa, torsional buckling at critical torque &gt; 120 N·m, thermal expansion mismatch (α=17×10⁻⁶/°C) causing binding"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thread contamination with 5+ μm abrasive particles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP67-rated sealing with double-lip seals, filtered lubrication system with 3 μm filtration"
  - node_2:
      trigger: "Over-torque application exceeding 110% of rated torque"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Torque-limiting coupling with shear pin rated at 105 N·m, real-time torque monitoring with Hall-effect sensors"
bom_nodes:
  thread-profile:
    type: "component"
    urn: "URN:CNFX:ME:THREAD_PROFILE"
    interface_type: "physical-logic-coupled"
  drive-end:
    type: "component"
    urn: "URN:CNFX:ME:DRIVE_END"
    interface_type: "physical-logic-coupled"
  bearing-surface:
    type: "component"
    urn: "URN:CNFX:ME:BEARING_SURFACE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4759-1:2018 TOLERANCES FOR FASTENERS - PART 1: BOLTS, SCREWS, STUDS AND NUTS - PRODUCT GRADES A, B AND C"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/measuring-screw.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "1801f314329f365b22e8838b6f1340b251e661d4a8da3b09e2c5889c798c0bee"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Measuring Screw

## 1. Technical Definition
A precision screw component used for controlled displacement or measurement within metering systems.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 N·m torque, 0.01-10 mm displacement, 316L stainless steel, -40°C to 150°C**. Failure boundary: **Yield strength exceeded at 250 MPa, thread shear stress &gt; 180 MPa, displacement accuracy loss beyond ±0.005 mm**, Mechanism: **Thread galling due to adhesive wear at contact pressures &gt; 1.5 GPa, torsional buckling at critical torque &gt; 120 N·m, thermal expansion mismatch (α=17×10⁻⁶/°C) causing binding**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Thread contamination with 5+ μm abrasive particles | 8 | Progressive wear increasing backlash to &gt;0.02 mm | IP67-rated sealing with double-lip seals, filtered lubrication system with 3 μm filtration |
| Over-torque application exceeding 110% of rated torque | 8 | Thread stripping or screw deformation causing permanent displacement error | Torque-limiting coupling with shear pin rated at 105 N·m, real-time torque monitoring with Hall-effect sensors |

## 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 Lathe**, **Thread Rolling Machine**, **Surface Grinder**  
**Downstream Applications**: Precision Metering Pumps, Laboratory Dispensing Systems, Industrial Calibration Instruments  

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

### Q: What applications are measuring screws used for in machinery manufacturing?
**A**: Measuring screws are precision components used in metering systems for controlled displacement applications such as dosing equipment, positioning systems, and precision measurement devices within the machinery and equipment manufacturing industry.

### Q: Why is stainless steel the preferred material for measuring screws?
**A**: Stainless steel provides excellent corrosion resistance, durability, and dimensional stability, ensuring consistent performance and longevity in industrial environments while maintaining precise measurement capabilities.

### Q: What are the key components of a measuring screw's BOM?
**A**: The bill of materials includes the bearing surface for smooth operation, drive end for connection to motion systems, and thread profile that determines the precision displacement characteristics for accurate measurement.

## 6. Manufacturing Compliance
- ISO 4759-1:2018 TOLERANCES FOR FASTENERS - PART 1: BOLTS, SCREWS, STUDS AND NUTS - PRODUCT GRADES A, B AND C

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Measuring Screw](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/measuring-screw)**

### 🌐 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**: MEASURING_SCREW | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4b32d514
