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A special combination fastener for photovoltaic C-shaped steel brackets with sliding, locking, and insulated plastic wings for welding-free and drilling-free PV module installation.
The photovoltaic plastic wing nut set is a special combination fastener for photovoltaic C-shaped steel brackets, featuring sliding, locking capabilities, and insulated plastic wings. The core components are the nut block, plastic wing, and matching bolts and washers.
Design note: The set is used to quickly position and lock pressure blocks and purlins within the C-shaped steel slide groove, enabling a welding-free and drilling-free installation of photovoltaic modules.
SLIDING & LOCKING
Slides into the C-shaped steel groove and locks pressure blocks or purlins in position quickly.
INSULATED PLASTIC WING
PA66 / PP wings are insulating, wear-resistant, and weather-resistant from -40 C to +85 C.
The nut block has a metal body with internal threads M6 / M8 / M10 / M12 (commonly M8 / M10) and anti-slip teeth or slots. Symmetrical folded wings lock onto the C-shaped steel when rotated.
Some models include a spring to enhance preload and provide more stable anti-loosening performance. Bolts are hexagon or Allen head, M8 / M10, with lengths of 20 to 50 mm.
✓ Welding-free
No welding needed on site.
✓ Drilling-free
Slides into the C-channel groove.
✓ Insulated wings
PA66 / PP plastic insulation.
✓ Quick positioning
Fast lock of pressure blocks and purlins.
01 / PV MODULE MOUNTING
Fast installation of photovoltaic modules on C-shaped steel brackets.
02 / C-SHAPED STEEL BRACKET
Sliding fastener for C-channel slide grooves.
03 / PRESSURE BLOCK FIXING
Lock center and edge pressure blocks in position.
04 / PURLIN CONNECTION
Connect purlins and accessories to the bracket rail.
05 / ROOFTOP SOLAR
Lightweight fastening for rooftop PV structures.
06 / GROUND MOUNTING
Reliable fastening for ground-mounted PV systems.
| Material Type | Characteristics | Typical Finish |
|---|---|---|
| Nut Block | Aluminum or carbon steel body with internal threads M6 - M12 and anti-slip teeth. | Zinc / plain |
| Plastic Wing | PA66 / PP; insulating, wear-resistant, weather-resistant from -40 C to +85 C. | Natural nylon |
| Bolts & Washers | Hex or Allen head bolts M8 / M10, 20 - 50 mm, with flat and spring washers. | HDG / stainless |
Zinc Plating
Common corrosion protection for the metal nut block and bolts.
Hot-Dip Galvanizing
Heavy-duty zinc protection for outdoor PV structures.
Plain / Natural
Plain metal finish with natural nylon plastic wing.
Stainless Steel
Stainless bolt option for humid or coastal environments.
Custom Coating
Special finishes available on request.
Nut Block
Metal body with internal threads M6 - M12 and anti-slip teeth or slots.
Plastic Wing
Symmetrical folded wings lock onto the C-shaped steel when rotated.
Optional Spring
Enhances preload and provides more stable anti-loosening.
Set Contents
Bolts, flat and spring washers, and pressure blocks or connectors as needed.
Installation note: The nut set slides into the C-shaped steel groove and locks after rotation, enabling quick, welding-free and drilling-free module installation.
Bolt M8 x 6 - M12 x 8/9C-Channel 41 x 21 - 41 x 82Threads M6 - M12PA66 / PP Wing-40 C to +85 CZinc / Plain
| Component | Size | Note |
|---|---|---|
| Bolt | M8 x 6 / M8 x 8 / M10 x 8 / M10 x 9 / M12 x 8/9 | Hex or Allen head |
| C-Shaped Steel | 41 x 21 / 41 x 41 / 41 x 62 / 41 x 82 | Slide groove fit |
| Bolt Length | 20 - 50 mm | Per bracket design |
| Threads | M6 / M8 / M10 / M12 | Commonly M8 / M10 |
Other bolt sizes, channel dimensions, and set contents are available on request.
Kraft boxes
With inner partitions, thread protection and full labeling.
Bulk cartons
Five-layer corrugated, waterproof sealed and strapped.
Pallets / wooden cases
ISPM-15 heat treatment certification available.
Resealable polybags
For samples and low-volume orders.
VCI anti-rust packaging
For long-distance overseas shipment.
Custom OEM packaging
Labels, barcodes and packaging; MOQ may apply.
01 Raw Material Inspection
02 Nut Block Machining
03 Plastic Wing Molding
04 Thread Forming
05 Spring Assembly (Optional)
06 Bolt & Washer Prep
07 Surface Treatment
08 Dimensional Inspection
09 Sliding / Torque Test
10 Set Assembly
11 Packaging & Labeling
12 Outgoing QC
Dimensional inspection
Nut block, plastic wing, bolt and channel fit per drawing.
Thread fit
GO/NO-GO gauges and bolt engagement verified.
Sliding / torque test
Sliding in C-channel and locking torque checked by sample test.
Coating check
Zinc or plating quality and thickness verified.
Material certificate
Chemical composition and heat/lot traceability on request.
Final verification
100% visual inspection, set completeness and traceability.
1. What is the plastic wing nut set used for?
It quickly positions and locks pressure blocks and purlins in photovoltaic C-shaped steel brackets, enabling welding-free and drilling-free installation.
2. What sizes are available?
Bolts M8 x 6 to M12 x 8/9, internal threads M6 - M12, and C-shaped steel 41 x 21 to 41 x 82.
3. What materials are used?
Aluminum or carbon steel nut block, PA66 / PP plastic wing, and carbon steel or stainless bolts and washers.
4. What is the temperature range?
The plastic wing is weather-resistant from -40 C to +85 C.
5. What is included in a set?
Nut block, plastic wing, bolts, flat and spring washers, and pressure blocks or connectors as needed.
6. What surface treatments are available?
Zinc plating, plain finish, hot-dip galvanized or stainless bolts, and custom coatings on request.
