Electrical & Electronics · Documented in our brochure
Fasteners for LED Lighting Fixtures and Street Lighting Structures
Accurate Fastners supplies stainless steel fasteners for LED panel lights, street lighting fixtures, industrial lighting assemblies, and electronic enclosures. With 21 years of manufacturing and supply experience, the company offers a broad range of bolt, nut, screw, and washer types in SS 304 and SS 316 grades, with products complying with IS, BS, and DIN standards. Procurement engineers and OEM buyers can select from a well-organised catalogue to meet structural, aesthetic, and corrosion-resistance requirements across indoor and outdoor lighting installations.
Discuss your requirementFrom our brochure – fasteners used in
- LED panel lights
- Street lighting fixtures
- Industrial lighting systems
- Electronic enclosures
Industry Overview
Fastening in led lighting applications
LED lighting structures span a wide variety of assembly types — from lightweight panel-light housings secured with small-diameter machine screws, to heavy street-lighting poles and mast brackets fastened with larger hex bolts and anchor bolts. Each application places different demands on fastener geometry, thread form, and material grade. Accurate Fastners' catalogue covers this range, with products sized from M2 upward and thread forms in metric DIN/ISO as well as BSW inch series.
Outdoor street lighting poles and mounting arms are exposed to rain, humidity, and in coastal zones, airborne chloride. Stainless steel fasteners resist atmospheric corrosion without the paint or zinc-coating maintenance that carbon-steel hardware requires, helping to reduce lifecycle servicing costs. The selection of SS 304 or SS 316 should be guided by the specific environment; SS 316, with its molybdenum addition, offers stronger resistance to chloride-bearing atmospheres.
Electronic enclosures and LED driver housings typically use smaller machine screws, self-tapping screws, and plain washers that must not contaminate sensitive PCB assemblies through corrosion products or loose scale. Phillips pan head and socket head cap screws in SS 304 or SS 316 provide a clean, stable fixing that resists the mild condensation often found inside sealed luminaire enclosures. Stainless fasteners also retain their appearance on visible, architectural LED fittings.
Applications
Common fastening applications
LED Panel Light Assembly
Back-panel and frame fixings on LED panel lights commonly use small-diameter Phillips pan head machine screws and plain washers. DIN 7985 Phillips Pan Head Screws in SS 304, sized M3–M8, are a straightforward choice for thin-sheet aluminium or mild-steel panel frames in indoor luminaires.
Street Lighting Pole Mounting
Pole-top brackets and arm clamps require robust hex bolts and matching nuts. DIN 933 Hex Bolts with DIN 934 Hex Nuts in SS 316 provide reliable clamping in outdoor environments. U-bolts in SS 304 or SS 316 are also commonly used to clamp luminaire arms to circular steel poles.
Anchor and Base-Plate Fixing
Street-lighting columns and high-mast structures are typically secured to concrete foundations with anchor bolts or wedge anchor through bolts. Accurate Fastners offers both types in SS 304 and SS 316, sized M8–M20, suitable for base-plate installations where withdrawal and shear loads must be considered.
Industrial Lighting Fixtures
Pendant and surface-mounted industrial luminaires in warehouses, workshops, and factory floors require vibration-resistant fastenings. DIN 982 or DIN 985 Nylock Nuts paired with hex bolts provide locking without additional hardware, reducing the risk of loosening from machinery vibration over extended service periods.
Electronic Enclosure and Driver Housing
LED driver compartments and junction boxes are assembled using small machine screws in countersunk or pan-head form. DIN 7991 Allen CSK Screws and DIN 912 Socket Head Cap Screws in SS 304, sized M3–M10, give a flush or recessed finish that assists IP-rated enclosure sealing and maintains clean internal surfaces.
Rooftop and Façade LED Installations
Architectural and façade LED fittings mounted on building exteriors demand tamper resistance and corrosion durability. Anti-Theft / Security Bolts in SS 316 (M6–M12) are relevant where public access is possible, while DIN 6921 Flange Bolts provide bearing area distribution on thin cladding or sheet-metal mounting plates.
Selection
Selection considerations
Environment and Exposure Class
Indoor dry installations may use SS 202 or SS 304 fasteners economically. Outdoor urban environments warrant SS 304 as a minimum. Coastal or high-humidity zones with chloride exposure are better served by SS 316, which carries a molybdenum addition that improves pitting and crevice-corrosion resistance. Confirm site conditions before specifying grade.
Thread Form and Size Compatibility
LED fixture hardware spans both metric (DIN/ISO) and inch BSW thread forms, depending on imported luminaire designs. Accurate Fastners offers both series. Always verify the thread pitch and diameter specified in the fixture drawing; mixing ISO coarse and fine pitch threads in the same assembly is a common source of field problems.
Vibration Resistance
Road-side street lights and industrial luminaires are subject to wind-induced vibration and traffic shock. Nylock nuts (DIN 982 or DIN 985) or spring washers (DIN 127) help maintain clamping force under cyclic loading. For critical structural joints, consult your structural engineer for the appropriate locking method and preload specification.
Galvanic Compatibility
Stainless steel is cathodic relative to aluminium heat-sink bodies and carbon-steel poles; contact between dissimilar metals in the presence of moisture can cause accelerated corrosion of the less-noble metal. Use insulating washers or compatible fastener materials where prescribed by the luminaire OEM, and consult relevant standards for isolation guidance.
Galling and Assembly Torque
Austenitic stainless fasteners can gall during assembly, particularly in smaller diameters. Applying an appropriate anti-seize lubricant and following recommended torque values reduces galling risk. Stainless fasteners generally do not achieve the high-strength property classes available in alloy steel; verify that stainless strength meets your joint design requirements.
Materials & Environment
Material and environmental considerations
SS 202 is a lower-nickel austenitic grade generally suited to indoor or mild-exposure conditions and offers a cost-effective choice for interior LED panel assembly. SS 304 (nominally ISO 3506 Group A2) provides good atmospheric corrosion resistance for most outdoor urban lighting structures. Where chloride exposure is anticipated — coastal areas, road salt, or frequent washdown — SS 316 (approximately A4 under ISO 3506, containing 2–3% molybdenum) is the preferred grade. These are general engineering guidelines; the appropriate grade should be confirmed against site conditions and relevant design standards.
Designers should be aware of the galvanic relationship between stainless steel fasteners and the parent materials commonly found in LED structures: aluminium die-cast housings and galvanised or painted steel poles. Stainless steel is cathodic to both aluminium and carbon steel; where moisture can bridge the contact, the less-noble metal is at risk of accelerated corrosion. Isolating sleeves, washers, or coatings may be specified by the system designer. Accurate Fastners can supply washers in matching grades to support a consistent fastener assembly.
General guidance only. Confirm grade and design for your environment.
FAQs
Frequently asked questions
Does Accurate Fastners supply fasteners specifically for LED lighting applications?
Yes. LED lighting is a documented industry served by Accurate Fastners, covering LED panel lights, street lighting fixtures, industrial lighting, and electronic enclosures. The catalogue includes the bolt, nut, screw, and washer types most commonly required across these assembly types.
Which stainless steel grade is recommended for outdoor street-lighting installations?
For standard outdoor urban environments, SS 304 is generally adequate. In coastal areas or locations with road-salt or chloride exposure, SS 316 is the more appropriate choice due to its molybdenum content. The final grade selection should be confirmed against site-specific conditions and applicable design standards.
Can you supply both metric and BSW inch fasteners for LED fixture assembly?
Yes. The Accurate Fastners catalogue includes both metric DIN/ISO-series fasteners and BSW inch-series hex bolts and nuts in SS 304, SS 316, and SS 202 grades, allowing procurement teams to source hardware for both domestically designed and imported luminaire assemblies from a single supplier.
Are small-diameter screws for LED enclosures available, and in what grades?
Yes. DIN 7985 Phillips Pan Head Screws are available from M3, and DIN 912 Socket Head Cap Screws from M3, both in SS 304, SS 316, and SS 202. DIN 7991 Allen CSK Screws are available from M4 in the same grades, covering most electronic enclosure and driver-housing assembly requirements.
How can I request a quotation or submit a product enquiry?
Procurement teams and engineers can submit enquiries through the enquiry form on the Accurate Fastners website, send specifications and quantities by email to export@accuratefastners.com, or contact the team directly via WhatsApp. Please include product slug, grade, size, and required quantity to receive an accurate and prompt quotation.
Related Products
Products often considered for led lighting
- DIN 912304 · 316 · 202
DIN 912 Socket Head Cap Screw (Allen Cap Screw)
Size: M3 – M16
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