- Overview
- Product Description
- Product Parameters
- Manufacturing Process
- Packaging & Shipping
- Company Profile
Basic Info.
Packaging & Delivery
Product Description
Gurth Self Drilling Tapping Carbon Steel Socket Head Cap Flat Head Screw Supplier DIN7991
Our Flat Head Screw Advantages
· 304 stainless steel, beautiful and practical, high hardness, no deformation;
· The thread curve is standard and deep,
and it is firm and not easy to loosen after installation;
· Meet your different needs;
· Spiral thread, deep thread, uniform force;
| Material | Alloy Steel |
| Grade | 8.8, 10.9, 12.9 |
| Finish | Plain(Black oxide), Zinc Plated(White/Yellow), H.D.G and etc. |
| Thread | Metric,UNC,UNF,BSW |
| Standard | ISO, DIN, ASME, JIS, BS and Non-standard |
| Packing | 1. Bulk in cartons (25-30kg Max.)+wooden pallet 2. Small Boxes into outer carton + wooden pallet 3. According to customer special demand |
| LeadTime | 15-30 work days after order confirmed |
How to make a socket head cap screw ?
* After acid cleaning,we will delivery to the wire Drawing workshop for Drawing.
* Then transfer to the cold heading machine to make the hexagon head.(here we can do the head marking, Knurling or not Knurling here). if over M24, our machine will very biggest, you see~~
socket head cap screw DIN912 before thread rolling (below picture)
Thread rolling (below pictures)
* Then send to the heat treatment workshop to do the most important step--Heat treatment and with black.
And for Znic goods we will do it on plating factory.
Finish, let's do the test for Quality Checking!!!
HRC Test
HRC PERFECT!! so we can send the free samples to you to check the quanlity always if you need!
Package: 25kg bulk packing / small box inner carton
Label: we can follow customer requirements.
Shipment port: SHANGHAI
We,Hunan Gurth Technology Co., Ltd., is a professional manufacturer for fasteners with 2 factories in Wenzhou and Hunan bases and a number of experts and technicians engaged in hardware industries for more than 20 years. We focus on fasteners, our main products :
[ Socket head cap screw DIN912 8.8,10.9,12.9 ]
[ Set screw Din916 DIN913,DIN914 ]
[ Flat cap screw DIN7991 ]
[ Button cap screw ISO7380 ]
[ Hex bolts DIN933,DIN931 8.8,10.9,12.9 ]
[ Flange bolts DIN6921 ]
[ Nut DIN934,DIN982,DIN985,DIN6923 ]
[ Anchor ]
[ Rod thread ]
[ Washer ]
Through the years, we are consistently committed to supporting clients with better quality and competitive price.
