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[China]
Trade Verify
Address: NO.12 HUANGHE RD ,HUANGJINAG , DONGGUAN, GD,CHINA
Contact name:David
VEDALI HARDWARE CO., LTD |
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Verified Suppliers
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Hex Washer Head Sandwich Panel Screws Galvanized Steel Tapping Thread ST 5.5
Custom sandwich panel screws are similar with self drilling screws but with longer shaft , it is designed for thick sandwich panel installation .
Sandwich panel screws are made of alloy steel with harden treatment , hex washer head and a plastic ring under head , there are two shaft sections with self tapping threads that set on under head and another section is placed close ends that can secure panels steadily , rest section is shaft . Sandwich panel screws are made by a teck drilling point that is same with roofing screws or teck screws . this design helps sandwich panel screws to cut panels as quickly as possible .
Dimesions for head and point and threads of sandwich panel screws are same as the self drilling screws
| D | ST 2.9 | ST 3.5 | ST 3.9 | ST 4.2 | ST 4.8 | ST 5.5 | ST 6.3 |
| P | 1.1 | 1.3 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 |
| C | 0.4 | 0.6 | 0.6 | 0.8 | 0.9 | 1 | 1 |
| Dc | 6.3 | 8.3 | 8.3 | 8.8 | 10.5 | 11 | 13.5 |
| 5.8 | 7.6 | 7.6 | 8.1 | 9.8 | 10 | 12.2 | |
| K | 2.8 | 3.4 | 3.4 | 4.1 | 4.3 | 5.4 | 5.9 |
| 2.5 | 3 | 3 | 3.6 | 3.8 | 4.8 | 5.3 | |
| S | 4 | 5.5 | 5.5 | 7 | 8 | 8 | 10 |
| 3.82 | 5.32 | 5.32 | 6.78 | 7.78 | 7.78 | 9.78 | |
| Dp | 2.3 | 2.8 | 3.1 | 3.6 | 4.1 | 4.8 | 5.8 |
 | Thread diameter | 6.3 | |
| head diameter | 13.0 | ||
| Head height | 5.8 | ||
| Length | 200 | ||
| Pitch | 1.8 | ||
| Material | Alloy steel | Hardness | 450 HV |
| Finish | Zinc | Torque | 5.5 |
Hardness for different sandwich panel screws with different specifications based on standard requests .
| d/ diam | #6 | #7 | #8 | #10 | #12 | #14 (1/4) |
| tpi | 20 | 18 | 18 | 16 | 14 | 14 |
| Thr type | st | st | st | st | st | st |
| Min. case Hardness | 600 | 600 | 600 | 600 | 600 | 600 |
| Core Hardness Hv 0.3 | 300~400 | 300~400 | 300~400 | 300~400 | 300~400 | 300~400 |
| Min. Torsional Lb-in | 24 | 24 | 42 | 61 | 92 | 150 |
| Drill point Point # | Nr 2 | Nr. 2 | Nr. 2 | Nr. 3 | Nr. 3 | Nr. 3 |
| Test Plate Thick ness | 0.062~0.068 | 0.062~0.068 | 0.062~0.068 | 0.062~0.068 | 0.062~0.068 | 0.062~0.068 |
Optional materials
Carbon steel sandwich panel screws can be made of or from Stainless steel based on serial 300 , 400 and 200 .
Pull out torque for sandwich panel screws
| Gauge | Kg/cm |
| #4 | 14 |
| #6 | 28 |
| #7 | 35 |
| #8 | 48 |
| #10 | 71 |
| #12 | 94 |
| #14 | 110 |
Installation by screwgun if needed for sandwich panel screws
1 . A screwgun with a depth sensitive nose piece that be used to install drillers ,the screwgun should be a min of 4 amps and a RPM range from 0 to 2500c.
2 . Adjust the screwgun nose piece to properly set the fastener .
3 . Damaged bit tips should be replaced
4 . The fastener is fully setted when the head is flush with the work surface .
5 . The fastener have to penetrate beyond the metal structure a min of 3 picthes of threads
RFQ
Q.How long I can get samples for approval before placing order ?
A. Normally one week for custom screws , and we can deliver samples within 24 hours for standard screws or stock once received your request .
Q How many days dispatch goods after placed orders ?
A Generally , one week for popular screws under 2 tons , final delivery is subject to requests on screws , packing and or other deamnds from you .
Q.What are your popular payement menthods ?
A. T/T is our prior choose for all , of course , we are also accept L/C , Westunion , paypall .
Q. What products you produce ?
A. We manufacture various hardwares like fasteners screws , nuts , bolts , pins , rivets and custom metal stamping parts and plastic injeciton molding products .
