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Plated Steel Hex Head Self Drilling Screw, Type BSD, SAE J78-1998, Size 4.2 (No 8)
Plated Steel Hex Head Self Drilling Screw, Type BSD, SAE J78-1998, Size 4.2 (No 8) is available to buy in increments of 100
Available in:
Material: Carbon Steel, SS304, Xylan
Diameters: No6-No14 or 3.5-6.3
Lengths: 13-160mm
Head: Pan Phillips, Csk Phillips, Hex Head, Hex Head with EPDM Washer & Truss Phillips
Material: Carbon Steel, SS304, Xylan
Diameters: No6-No14 or 3.5-6.3
Lengths: 13-160mm
Head: Pan Phillips, Csk Phillips, Hex Head, Hex Head with EPDM Washer & Truss Phillips
Self-drilling Screws or SDS are most widely used screws in the building construction industry. Typical applications include the use of SDS for attaching plywood, soft woods or composite boards to metal or even to attach steel roofing sheets to battens. Stainless steel SDSs can also be used in marine environments.
Figure 1 Image courtesy: Stratco
Other Technical Specs
Min Torque N/cm : 2.8
Drilling Capacity: 0.7~2.5m
Drill Point#: NR2
MIin. Case Hardness: 600 CORE
Hardness HV 0.3: 300 - 400
Self Drilling Screws, Type BSD - SAE J78-1998 | |||||||||||||
Nominal Size or Basic Screw Diameter | Threads Per Inch | T | t | P | Min. Practical Nominal Screw Lengths Formed Points | Minimum Torsional Strength (lb.-in.) Steel Screws | |||||||
Major Diameter | Minor Diameter | Protusion Allowance | |||||||||||
Min | Max | Min | Max | #2 Pt. | #3 Pt. | 90° Head | Csk Head | 90° Head | Csk Head | ||||
#2 Pt | #2 Pt | #3 Pt | #3 Pt | ||||||||||
4 | .1120 | 24 | .114 | .110 | .086 | .082 | .163 | - | 5/16 | 3/8 | - | - | 14 |
6 | .1380 | 20 | .139 | .135 | .104 | .099 | .190 | .220 | 5/16 | 3/8 | 3/8 | 7/16 | 24 |
7* | .1510 | 19 | .153 | .146 | .113 | .109 | .137 | .157 | 5/16 | 3/8 | 3/8 | 7/16 | - |
8 | .1640 | 18 | .166 | .161 | .122 | .116 | .211 | .251 | 3/8 | 7/16 | 7/16 | 1/2 | 42 |
10 | .1900 | 16 | .189 | .183 | .141 | .135 | .235 | .300 | 7/16 | 1/2 | 1/2 | 9/16 | 61 |
12 | .216 | 14 | .215 | .209 | .164 | .157 | .283 | .353 | 1/2 | 5/8 | 1/2 | 5/8 | 92 |
1/4 | .2500 | 14 | .246 | .240 | .192 | .185 | .318 | .393 | 1/2 | 5/8 | 1/2 | 5/8 | 150 |
* Specs for #7 diameter drill screws are not included in SAE J78 at this time. | |||||||||||||
| Head Type | Hex |
|---|---|
| Material | Carbon Steel |
| Grade | 1022 |
| Drive | Hex |
| Diameter | 4.2 (#8) |
| Pitch | 18 tpi |
| Standard | No Standard |
| Plating | Zinc - Electroplated |
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