Are buyers getting a clear sourcing fit from hex flange self-drilling screws with integrated EPDM washers for metal roofing and PV bracket work? This listing from Dingzhou Juhe Metal Product Co., Ltd. shows a commodity-grade 4.8 self-drilling screw under…
Market Need: Why Buyers Are Sourcing Hex Flange Self Drilling Screws
Metal roofing, steel workshops, sunrooms, and PV bracket installations all require fasteners that can pierce thin-gauge steel and provide a durable, watertight connection. Procurement teams evaluating hex flange self-drilling screws typically focus on three requirements: a drill point that eliminates the need for pre-drilling, a flange head that distributes clamping force across a wider area, and an integrated EPDM washer that seals against moisture.
The JH-10 model from Dingzhou Juhe Metal Product Co., Ltd. is listed specifically for these application areas. The product's listed application field includes:
- Color steel roof
- Steel workshop
- Sunroom
- PV bracket
For buyers sourcing under price pressure, the listed parameters—DIN/GB standard, 4.8 grade, and a package-oriented price band—suggest a commodity-tier fastener rather than a high-performance or specialty fastening solution. That is not a drawback by itself; it simply sets the evaluation benchmark.
Product Description: JH-10 Hex Flange Self Drilling Screw with EPDM Washer
The following specifications are taken directly from the supplier's listing:
Model No.: JH-10
Groove: Hexagon
Connection: Common Bolt
Head Style: Hexagonal
Standard: DIN, GB
Grade: 4.8
Surface Finish: Blue White Zinc, Hot Dipped Galvanized, Dacromet
Accessory: Integrated EPDM Waterproof Rubber Washer
Application: Color Steel Roof, Steel Workshop, Sunroom, PV Bracket
Alias Name: Roofing Tek Screw, Hex Flange Drill Tail Screw
Transport Package: 25kg Woven Bag / Carton, Packed in Small Box
Specification: 4.8, 5.5, 6.3; length 16mm - 100mm, with EPDM washer
Trademark: Fill your own brand / OEM acceptable
Origin: China Hebei
HS Code: 7318140000
Listed Price Range: US$ 1,120.00 - 1,132.00
Package Size / Gross Weight: 1.00cm × 1.00cm × 1.00cm; 1.000kg (placeholder values—confirm with supplier)
Note that "Common Bolt" in the connection field indicates a threaded fastener that works with a nut or pre-tapped hole; for self-drilling screws, the drill point does the cutting. Buyers should confirm whether the quoted price covers a full carton or a specific piece count, as the listing does not state MOQ or pack quantity per box.
Proof Points: What the Listing Specifies—and What It Does Not
The supplier listing provides several concrete data points that procurement teams can use for initial filtering:
- Standard references: DIN, GB
- Grade: 4.8 (common strength class for general-purpose fasteners)
- Surface finishes: blue white zinc, hot dipped galvanized, Dacromet
- Integrated EPDM washer indicated as standard accessory
- OEM branding accepted
- Listed price band: US$1,120.00–1,132.00
- HS code 7318140000 for self-tapping screws
No certification claims—such as ISO, CE, or salt spray test results—appear in this listing. Buyers who need documented coating performance, raw material traceability, or quality system certifications should request those explicitly and verify them independently.
The presence of DIN/GB standards and 4.8 grade gives a baseline for comparison, but it does not automatically confirm batch consistency. For roofing and PV applications, EPDM washer compression set and weatherability are critical; these are not quantified in the listing.
Company Profile: Dingzhou Juhe Metal Product Co., Ltd.
The seller behind the JH-10 screw is Dingzhou Juhe Metal Product Co., Ltd. Its listed product range covers wire, mesh, galvanized iron, nails, and rods—suggesting a broader metal products and hardware profile rather than a specialist fastener-only manufacturer.
The product's Origin field lists China Hebei, which is a common sourcing region for metal wire and fastener products. However, the listing does not provide factory capacity, annual output, employee count, or quality certifications. Procurement teams should treat this as an initial supplier introduction, not a fully qualified source.
For importers and distributor buyers, this means supplier qualification should center on capacity confirmation, sample evaluation, and written terms—especially if the requirement involves long-run consistency or private labeling.
Typical Sourcing Timeline
The following is a generic RFQ-to-order sequence for evaluating a fastener SKU like this one. Actual lead times should be confirmed with the supplier.
- Prepare RFQ with required diameter (4.8, 5.5, or 6.3), length (16–100mm), surface finish, and annual volume.
- Request formal quotation with price basis, incoterms, and validity period.
- Request physical samples and relevant test reports for coating and EPDM washer.
- Validate packaging method, box quantity, and HS code classification.
- Negotiate OEM branding if private label is required.
- Place a trial order and arrange pre-shipment inspection.
Because the listing does not state minimum order quantity or lead time, step two should include a request for both.
Next Steps for Buyers
For procurement teams evaluating this SKU, the immediate action is a structured RFQ, not a blind order. Specify dimensions, surface finish, and expected volume; request a written quotation that clarifies the US$1,120.00–1,132.00 price band (e.g., whether it applies to a carton, a ton, or a specific pack count).
Since OEM branding is listed as acceptable, buyers with private-label programs can ask for customization procedures, minimums, and lead time impact. The listing does not provide MOQ, so include that question in the first inquiry.
- Request formal quotation with incoterms and pack count.
- Ask for EPDM washer samples and coating adhesion test data.
- Confirm packaging details and HS code for customs.
- Clarify OEM branding minimums and tooling (if any).
These steps help convert a listing into a comparable, documented sourcing option.
Disclaimer
All information in this procurement evaluation is derived from the supplier's product listing as provided. It has not been independently verified. Specifications, pricing, packaging, standards, and trademark details may change. Buyers should conduct their own due diligence and obtain written confirmation from Dingzhou Juhe Metal Product Co., Ltd. before placing orders or making purchase commitments.
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