Insulating fasteners, specified around the real assembly.
Threaded rods, bolts, nuts, washers and drawing-based parts in epoxy glass, phenolic cotton cloth, laminated wood, FRP and glass-filled nylon — engineered for electrical and industrial assemblies.
Flagship insulating fasteners
Metal is not always the right reference point.
Electrical conductivity, corrosion, magnetic response, temperature, transformer oil and long-term joint behavior can all change the material decision. We separate raw-material identity from verified finished-thread performance.
Choose by service condition
Click any product to view its applications, materials, catalogue data and quotation checklist on this page.
Insulating Threaded Rods
Non-metallic threaded rods provide mechanical fastening without introducing the electrical conductivity, corrosion behavior or magnetic response of metal. Selection starts with the finished joint, not only the raw-material name.
View specificationsG10, FR4, G11 & FR5 Threaded Rods
Machined from glass-fabric-reinforced epoxy laminate according to the required drawing and size. G10/FR4: 130°C class B. G11/FR5: 155°C class F. Related, but not interchangeable.
View specifications3240 Epoxy Fiberglass Threaded Rod
Cut from 3240 sheet and machined to the customer drawing. A class B, 130°C economical alternative with lower mechanical performance than FR4.
View specificationsLaminated Wood Threaded Rods & Nuts
High-density laminated red-beech veneers and thermosetting resin, metal-inspected. Low moisture, easy drying, high oil absorption and negligible shrinkage.
View specificationsGlass-Fiber Composite Threaded Rods & Nuts
EPR L1, EPR L5, EPR L6 and UPR L9 systems, machined from reinforced laminate or molded sheet to the required thread.
View specificationsGlass-Filled Nylon Threaded Rods & Fasteners
30% glass-filled Nylon 6/6 rather than unfilled polyamide — with moisture conditioning, creep and temperature accounted for in the design.
View specificationsPhenolic Cotton Cloth Threaded Rods & Nuts
Wound cotton-cloth laminate with thermosetting binder, machined to customer drawings. Machinability, insulation and mechanical toughness in one material.
View specificationsG10/FR4 Insulating Bolts & Nuts
Matched G10/FR4 bolt-and-nut systems provide mechanical clamping and electrical isolation. Material combination, fit, engagement, washers and torque must be qualified together.
View specificationsInsulating Washers & Spacers
Washers and spacers distribute clamping load, control separation and interrupt conductive paths. Compressive stress, edge distance, creepage design and bearing area matter as much as the base material.
View specificationsCustom Machined Insulating Fasteners
When catalogue hardware cannot meet an assembly, SIDA reviews material selection, machining direction, thread integrity, critical dimensions, first-article inspection and export packaging as one drawing-led workflow.
View specificationsNon-Metallic Insulating Fastener Systems
A single commercial hub for selecting non-metallic fasteners by electrical, mechanical, thermal, chemical and transformer-oil service conditions.
View specificationsG11 High-Temperature Threaded Rod
A dedicated G11 page should be published only when genuine grade-specific material certificates and finished-thread evidence are available. Color or a generic supplier description is not sufficient proof.
View specificationsA safer path from requirement to quotation
- 01Define assembly function
- 02Select candidate material
- 03Review thread and joint
- 04Agree inspection evidence
Buyer questions, answered precisely
G10 vs G11 Threaded Rod
Choose by verified operating temperature, thermal cycling, finished-thread evidence and the customer standard—not by color or catalogue sheet data.
ReadPhenolic vs Epoxy Fiberglass Fasteners
Compare machinability, wear behavior, moisture, electrical structure and elevated-temperature requirements before selecting a grade.
ReadHow to Specify Insulating Bolts
Define assembly function, material, geometry, load, torque, environment and finished-part acceptance in one drawing-led RFQ.
ReadComposite Nut Torque & Thread-Strip Testing
Steel torque tables do not apply. Establish recommendations for the exact material pair, size, engagement and conditioning state.
ReadMachined vs Molded Composite Threads
Compare flexibility, reinforcement continuity, tooling, MOQ, tolerances and validated finished-product performance.
ReadFRP Rods for Corrosive Environments
Chemical name, concentration, temperature, exposure mode, UV and sustained load determine the right resin system.
ReadMetric vs UNC Composite Fasteners
Keep the RFQ, mating part, drawing, gauge plan and package marking on one consistent thread designation.
ReadCustom Insulating Fastener RFQ Checklist
A complete technical-commercial checklist for drawings, material, thread, load, tests, quantities and delivery requirements.
ReadSend the drawing.
Define the duty.
Tell us the material, thread, quantity, operating temperature, load, destination and inspection requirements. We will review the assembly before quotation.