Application note
Self-drilling screw with EPDM washer
Hex washer head self-drilling screws with EPDM washer as described on the source product page (ASME B18.6.4, SAE J78, DIN 7504).
Background
No named overseas customer was published on ehons.cn. This page is therefore an application note built only from the product text, not a testimonial.
Challenge
Keep head style, thread and coating identical across export lots so the buyer can restock without rewriting the warehouse SKU.
What we run
The published process blocks — heading, thread, heat treatment where listed (C1022), coating, inspection, carton packing.
Quality control
ISO 9001 system on production, transport and sales, plus the inspecting machines mentioned in the company profile.
Frequently asked questions
Is this a case study with results?
No performance numbers were published, so none are added.
Can I use this as a certificate?
No. Use the product specification table and an official quotation instead.