Specialty Fasteners
Eye Screws and Hook Screws
Lag eye screws and cup hooks with wood thread, M2–M12, zinc plated, black, brass or stainless.
M2–M12C1022 steel
Specialty Fasteners
Solar Hanger Bolt with EPDM Washer
A2 stainless double-thread hanger bolt, M8/M10/M12, with EPDM seal, nuts and adapter plate for PV roofs.
- Material
- SS304 (A2)
- Diameter
- M8, M10, M12
- Length
- 150–350 mm
- Threads
- Wood thread + metric machine thread
- Seal
- EPDM washer
- Includes
- Flange nuts, adapter plate
- Free samplesUp to 20 pcs, ships in 7 days
- Lot test reportHardness, coating, drill time
- Made to orderCustom lengths, finishes, head marks
- Export readyFOB, CFR or CIF with full documents
Overview
A wood thread fixes into the rafter; a machine thread above the roof carries the rail via an adapter plate. The EPDM seal and flange nut keep the roof penetration watertight.
Applications
- Pitched metal roofs
- Tiled roofs
- Solar retrofit
Used in these projects
Key features
- Watertight roof penetration
- Stainless for 25-year PV life
- Complete with nuts and plate
- Lengths for any roof build-up
Specifications
Typical values. Every dimension, hardness and coating is confirmed in writing with your quotation.
| Material | SS304 (A2) |
|---|---|
| Diameter | M8, M10, M12 |
| Length | 150–350 mm |
| Threads | Wood thread + metric machine thread |
| Seal | EPDM washer |
| Includes | Flange nuts, adapter plate |
| Standard | DIN |
| MOQ | 10,000 pcs |
| HS code | 7318.14 / 7318.12 (by type) |
Buying guide
Applies to all specialty fasteners.
Hanger bolt length
Choose a length that clears roof sheet, batten and rail with at least 60 mm of wood-thread embedment in the rafter.
Load direction
Eye and hook screws are rated for straight-line tension. Side loads reduce capacity sharply.
Material
A2 stainless for solar and outdoor hardware; zinc-plated carbon steel for indoor use.
Ordering
Packing and delivery
Standard terms for this product. Tell us if your market needs something different.
PackingSmall boxes, buckets or 20–25 kg cartons on fumigated pallets; private label available.
Lead timeSamples in 7 days; production 25–35 days after deposit.
PaymentT/T 30 % deposit, 70 % against B/L copy, or L/C at sight.
ShippingFOB Shanghai or Ningbo, CFR or CIF to your port.
Questions about this product
What sizes of solar hanger bolts do you make?
M8, M10 and M12 with lengths from 150 to 350 mm, supplied with EPDM washer, flange nut and adapter plate.
Can hook screws be custom shaped?
Yes. We bend L, J, cup and question-mark hooks to drawing in wire from 2 to 12 mm.
Do you offer brass or gold finishes?
Yes, brass plating and yellow zinc are available for decorative hooks.
Specialty Fasteners
Related products
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L-Hook Screw
Zinc-plated carbon steel L-shaped screw hook with half thread, for shelves, cabinets and frames.
Carbon steel
Request for quotation
Request a quotation for Solar Hanger Bolt with EPDM Washer
Tell us the screw, size and quantity. A sales engineer replies within one business day with price, lead time and a sample offer.
- Emailinquiry@china-screw-factory.com
- WhatsApp+86 176 2154 1688
- Phone+86 176 2154 1688