DrillFastĀ® A4 stainless low profile light steel panel fastener, no washer
A4/316 grade stainless steel low profile composite panel fastener for fixing to light section steel
No sealing washer, usually used for internal applications or where there is no weatherseal required.
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Certified by


Estimated lead times
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Product Code
DF3-SSA4-P-HT-5.5
Lead Time
1 Day
Lead Time
1 Day
Lead Time
1 Day
Lead Time
1 Day
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DF3-SSA4-P-HT-5.5 x 155
DF3-SSA4-P-HT-5.5 x 240
DF3-SSA4-P-HT-5.5 x 190
DF3-SSA4-P-HT-5.5 x 115
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Key Features
Specification
Capacity
Performance
Installation
Downloads
Description
Low profile stainless steel high thread fasteners for fixing composite panel systems.
Features & Benefits
- High thread provides optimal clamping force to top sheet
- A4/316 grade stainless steel for corrosion resistance
- Free spin zone prevents thread strip out under normal installation conditions
- No sealing washer - when a weatherseal is not required, often in secret fix or internal applications
Application
- For mechanically fixing composite panel systems to light metal purlins and rails, and timber
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Head Style
Low profile pan, TX25 recess
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
155 mm
Effective Thread Length (Min)
88 mm
Effective Thread Length (Max)
134 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
240 mm
Effective Thread Length (Min)
136 mm
Effective Thread Length (Max)
217 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
190 mm
Effective Thread Length (Min)
126 mm
Effective Thread Length (Max)
167 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
115 mm
Effective Thread Length (Min)
48 mm
Effective Thread Length (Max)
94 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Build-up
Effective thread length
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Installation and handling
Installation tool | Variable speed electric screw gun |
Installation drive | Fixfast RedDrive |
Installation speed | 1500 RPM |
Correct installation | Fasteners should be driven within three degrees of perpendicular to the surface of the fastened material. Use a depth-setting nosepiece to avoid over-driving, and do not over-tighten. Variants with bonded washers should not have the rubber compressed to less than two-thirds of its uncompressed height. Care should be taken when engaging and disengaging from the fastener head to avoid damage to the protective coating. |
Handling | Fasteners may have sharp edges, and the use of power tools can be dangerous. Use personal protective equipment. Store fasteners in dry conditions. Inspect each fastener before use and do not use damaged fasteners. |
Downloads
Please see the below files available to download for this product
Key Features
Description
Low profile stainless steel high thread fasteners for fixing composite panel systems.
Features & Benefits
- High thread provides optimal clamping force to top sheet
- A4/316 grade stainless steel for corrosion resistance
- Free spin zone prevents thread strip out under normal installation conditions
- No sealing washer - when a weatherseal is not required, often in secret fix or internal applications
Application
- For mechanically fixing composite panel systems to light metal purlins and rails, and timber
Specification
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Head Style
Low profile pan, TX25 recess
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
155 mm
Effective Thread Length (Min)
88 mm
Effective Thread Length (Max)
134 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
240 mm
Effective Thread Length (Min)
136 mm
Effective Thread Length (Max)
217 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
190 mm
Effective Thread Length (Min)
126 mm
Effective Thread Length (Max)
167 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Fastener Material
Fastener
Austenitic Stainless Steel A4 Grade (316) with organic coating
Sealing Washer
No washer
Durability Class
Years / Environment
|
||||||
---|---|---|---|---|---|---|
Interior | Rural | Urban | Industrial / Coastal | Marine | Swimming pools & Chemical plants | |
Corrosivity Category | C1 | C2 | C3 | C4 | C5 | - |
Austenitic Stainless Steel A4 Grade (316) | 40 | 40 | 40 | 25 | 25 | 0 |
Dimensions
Diameter
5.5 mm
Length (mm)
115 mm
Effective Thread Length (Min)
48 mm
Effective Thread Length (Max)
94 mm
Head Style
Low profile pan, TX25 recess
Drilling Capacity
Steel
1.2 mm
3 mm
Capacity
Build-up
Effective thread length
Performance
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Fastener Shear Performance VR,K
Substrate
Composite panel
|
1.2 mm |
Steel | |
100 mm | 0.98 kN |
Fastener pull-out performance
NR,II,K (Tensile - Pull-out) | 1.2mm Steel: 1.43 kN |
2mm Steel: 2.75 kN | |
3mm Steel: 4.9 kN | |
Softwood C16: 2.68 kN |
Fastener Pullover Performance NR,K
Substrate
Steel
|
S15 washer |
Steel | 3 mm |
0.5 mm | 3.28 kN |
Installation
Installation and handling
Installation tool | Variable speed electric screw gun |
Installation drive | Fixfast RedDrive |
Installation speed | 1500 RPM |
Correct installation | Fasteners should be driven within three degrees of perpendicular to the surface of the fastened material. Use a depth-setting nosepiece to avoid over-driving, and do not over-tighten. Variants with bonded washers should not have the rubber compressed to less than two-thirds of its uncompressed height. Care should be taken when engaging and disengaging from the fastener head to avoid damage to the protective coating. |
Handling | Fasteners may have sharp edges, and the use of power tools can be dangerous. Use personal protective equipment. Store fasteners in dry conditions. Inspect each fastener before use and do not use damaged fasteners. |
Downloads
Downloads
Please see the below files available to download for this product
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