INDUSTRY COMPONENT

Nut

A threaded fastener used with bolts or screws to secure components in mechanical assemblies.

Component Specifications

Definition
A nut is a type of fastener with a threaded hole, typically hexagonal in shape, designed to mate with a bolt or screw to clamp parts together. In drive mechanisms like ball screws, nuts translate rotary motion into linear motion along the screw shaft, often featuring internal ball bearings for reduced friction and high precision.
Working Principle
Works by engaging with the external threads of a bolt or screw via its internal threads, creating a clamping force when tightened. In ball screw applications, the nut contains recirculating ball bearings that roll between the screw and nut threads, converting rotational force into linear movement with minimal friction.
Materials
Carbon steel (e.g., Grade 5, 8), alloy steel (e.g., 4140, 4340), stainless steel (e.g., 304, 316), brass, or nylon. For high-performance ball screw nuts, hardened steel (HRC 58-62) is common.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Pitch1mm to 5mm
Height5mm to 30mm
Thread SizeM6 to M30
Load CapacityUp to 50 kN
Precision GradeC3 to C7
Width Across Flats10mm to 46mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 4032, DIN 934, ISO 3408

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thread stripping under overload
  • Corrosion in harsh environments
  • Loosening from vibration
  • Misalignment causing binding
FMEA Triads
Trigger: Insufficient torque during installation
Failure: Nut loosens, leading to assembly failure
Mitigation: Use torque wrenches and follow manufacturer specs
Trigger: Exposure to corrosive chemicals
Failure: Material degradation and loss of clamping force
Mitigation: Select corrosion-resistant materials like stainless steel or apply coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
ISO 4759-1 for dimensional tolerances, ±0.1mm on critical dimensions
Test Method
Torque testing per ISO 898-2, hardness testing per ISO 6508, and fatigue testing for ball screw nuts

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Nut

Manufacturer profiles associated with Nut.

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Upper Tool (Punch)
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Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the difference between a standard nut and a ball screw nut?

A standard nut is for static fastening, while a ball screw nut has internal ball bearings for smooth linear motion in drive systems, reducing friction and wear.

How do I select the right nut material for my application?

Choose based on load, environment, and corrosion resistance: carbon steel for general use, stainless steel for wet conditions, and alloy steel for high stress.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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