ASME B18.6.3 Pan Head Self Tapping Screws Cold Forged For Building
Stainless Steel DIN 7981 / ISO 7049 / ASME B18.6.3 2010 Pan Head Self Tapping Metal Screws
Description:
DIN 7981 (ISO 7049) is Cross Recessed Pan Head Tapping Screw. Type H: Phillips drive. Type Z: Pozi drive. ASME B18.6.3 2010 self tapping screws
The DIN7981 which is called ISO7049, is as "Phillips head screws," What is the cross, it is the head of the screw is cross-shaped, the cross is a cross with a fine blanking, stamping made. For the material, phillips pan head screws are made of iron which is into carbon steel, stainless steel is also divided. There are three types of carbon steel, low carbon steel, middle carbon steel, high carbon steel. Stainless steel also has different type: stainless steel SUS201 stainless steel SUS304, stainless steel SUS316, stainless steel SUS404 and the like.
To assure you of product quality, we make each approved item using the best material, and the latest machines. Plus, we carry out strict in-house QC measures at multiple stages in our ISO 9001:2000-certified facilities, storing all results in our central databank. So we can provide you with detailed order-specific reports on tensile strength, torque and zinc plating thickness.
For the surface treatment, normally, the stainless steel is all as plain polish.
Size: 3.5 x 9.5/3.5 x 13/3.5 x 16/3.5 x 19/3.5 x 22 mm
4.2 x 9.5/4.2 x 13/4.2 x 16/4.2 x 19/4.2 x 22/4.2 x 25 mm
4.8 x 13/4.8 x 16/4.8 x 19/4.8 x 22/4.8 x 25 mm
DIN 7981 - Cross Recessed Pan Head Tapping Screws Specifications
| Size | Diameter:ST3.5 | |
| Length:50 | ||
| Material | 1.Stainless steel | SUS201,304,316,410 |
| 2.Carbon steel | C1006,C1008,C1010,C1018,C1022,C10B21,C10B33,C1035,C1045,C435#,40CrMo,42CrMo | |
| 3. Alloy steel | SCM435,C10B21,C10B33 | |
| 4. Iron | 1213,12L,1215,etc. | |
| Standard | DIN7981 | |
| Application | Building,Automobile Industry,Furniture,Sanitary,Electronics,Traffic. | |
| Head |
Pozi pan head tapping screws |
|
| Dia | Head Thickness Max | Head Dia Max | m approx. | Cross Recess No. |
| 2.2 | 1.8 | 4.2 | 2.6 | H1 |
| 2.9 | 2.2 | 5.6 | 3 | H1 |
| 3.5 | 2.6 | 6.9 | 4.2 | H2 |
| 3.9 | 2.8 | 7.5 | 4.4 | H2 |
| 4.2 | 3.05 | 8.2 | 4.6 | H2 |
| 4.8 | 3.55 | 9.5 | 5 | H2 |
| 5.5 | 3.95 | 10.8 | 6.5 | H3 |
| 6.3 | 4.55 | 12.5 | 7.1 | H3 |
Application:
Building,Automobile Industry,Furniture,Sanitary,Electronics,Traffic.Hig way. DIN7981, DIN7982, self-tapping screws are used for non-metal or soft metal. Self-tapping screws are pointed, so as to "self-tapping"; Ordinary screw heads are flat. The self-tapping screws is to drill hole without tap holes. The screws are different with general screws.
Advantages:
1. Auto-matic Machine Threading machines Sieving machine
2. Salt atmoshere testing machine, Go-No go gauge, image screening instrument
3. Experienced Staff
4. Quality Approvals
5. Quick delivery, and much stock.
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