Threaded Standoff Spacers

Threaded Standoff Spacers are precision-engineered fasteners designed to create space between components while enabling secure threaded connections. These components play a vital role in electronic assemblies, industrial machinery, aerospace equipment, and medical devices, where spacing, insulation, alignment, or thermal management is critical.

Made from robust Materials like aluminum 6061-T6, brass, and stainless steel 303/304, threaded spacers provide mechanical strength, Electrical insulation, and dimensional accuracy in harsh and sensitive environments alike. Available in male-female, female-female, and hex/round body configurations, they are optimized for both metric and imperial threading standards.

Product Features

• Secure Threading: Internal and/or external threads conform to ISO metric, UNC, or UNF standards.

• Precise Tolerances: Diameter tolerance of ±0.005 inch (±0.127 mm) and length tolerance of ±0.010 inch (±0.254 mm) ensure consistent mounting.

• Thermal & Electrical Performance: Materials selected for thermal conductivity, dielectric strength, or magnetic neutrality.

• Wide Temperature Range: Operational from -65°F to +500°F (-54°C to +260°C) depending on material.

• Custom Sizes: Lengths from 0.25 to 2.0 inches (6.35–50.8 mm); thread sizes from M2 to M6 or #2-56 to ¼-20 UNC.

Machining Process

Threaded standoff spacers are produced using advanced CNC turning and threading processes that ensure excellent concentricity, flatness, and surface finish.

• Automatic CNC turning for high-volume precision

• Thread forming and rolling per ASME B1.1 / ISO 68-1

• Tapping operations for female-female internal threads

• Deburring and polishing for clean, snag-free assembly

• Inspection with thread gauges, CMM, and optical comparators

Material Selection

Surface Finishing Options

Surface treatments are applied to enhance appearance, corrosion resistance, and conductivity:

• Anodizing (clear/black): For aluminum, adds 0.0002–0.001 inch oxide layer

• Electroless Nickel Plating: 0.0001–0.0003 inch coating for brass and steel

• Passivation: For stainless steel, enhances corrosion resistance

• Polishing / Deburring: Ensures smooth threads and consistent finish

• Dry Film Lubrication: 0.0001–0.0003 inch MoS₂-based for high-cycle use

Precision & Inspection Capabilities

Our threaded spacers meet tight dimensional and thread tolerances, verified by:

• Go/No-Go Thread Gauges (ASME B1.3M compliant)

• CMM and Visual Inspection (±0.001 inch parallelism check for optical uses)

• Thread Concentricity and surface finish analysis

• Batch certification and material traceability documents

Application Scenarios

Electronics Assembly

• PCB Mounting: Maintain electrical insulation with dielectric strength up to 4.7 kV/mm

• Thermal Management: Brass spacers dissipate heat (thermal conductivity ~120 W/m·K)

• EMI/RFI Shielding: Anodized aluminum (surface resistance < 0.1 ohm/sq) forms Faraday cages

Industrial Machinery

• Vibration Isolation: Stainless steel standoffs offer >500 Hz natural frequency

• Access Panel Mounting: Create IP54-rated spacing

• Optical Systems: Maintain precise alignment with ±0.001 inch flatness

Aerospace Applications

• Avionics: Titanium spacers meet MIL-DTL-38999 for vibration resistance

• Satellites: Low-outgassing anodized aluminum (<1.0% TML, <0.1% CVCM)

Medical Equipment

• MRI-safe Designs: Brass spacers are non-magnetic and stable in 1.5–3.0 Tesla fields

• Sterilizable Units: 316L stainless steel withstands autoclave sterilization at 134°C, 2.1 bar

Maintenance Procedures

Cleaning

• Ultrasonic Cleaning: 40 kHz with pH-neutral solutions for 5–10 minutes

• Solvent Degreasing: Use 99.9% isopropyl alcohol

• Avoid abrasives >600 grit on anodized parts

Thread Care

• Lubrication: Apply dry film before high-cycle use

• Thread Inspection: Use Go/No-Go gauges

• Assembly Speed: Engage threads <5 RPM to prevent cross-threading

Corrosion Prevention

• Humidity: Store below 60% RH

• Galvanic Isolation: Add 0.005" nylon washers between metals

• Inspection Frequency: Check for corrosion every 6–12 months

Replacement Criteria

• Thread Damage: Replace if >30% of thread profile is worn

• Permanent Deformation: Discard if length distortion >0.5%

• Coating Loss: Replace anodized units if >50% wear is visible

FAQ – Threaded Standoff Spacers

Q1: Can I request custom sizes or threads?
A: Yes, we offer custom threaded standoffs in any length, material, or thread standard.

Q2: What’s the typical lead time for prototype orders?
A: Rapid prototyping available in 3–7 days, depending on quantity and specs.

Q3: Are your products RoHS compliant?
A: All materials and finishes are RoHS / REACH compliant, with documentation provided.

Q4: What is the difference between male-female and female-female types?
A: Male-female spacers have a threaded stud and hole; female-female types have internal threads at both ends.

Q5: What finishes can I choose from?
A: Popular finishes include clear or black anodizing, nickel plating, passivation, and dry film lubrication.