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Carlisle SynTec HP Purlin Fastener 5-3/4 in. Self-Drilling Roofing Screw, 500-Carton
Regular price $426.33Carlisle SynTec HP Purlin Fastener 5-3/4 in. Self-Drilling Roofing Screw, 500-Carton
Carlisle SynTec HP Purlin Fasteners secure single-ply membrane and Pressure-Sensitive (PS) RUSS to structural steel purlins in Carlisle metal retrofit roofing systems. This 5.75 in. size ships 500 fasteners per carton, weighing about 20 lb per the data sheet. They pair with 2 in. HP Polymer Seam Plates and 2-3/8 in. Piranha Plates.
Key Features:
- Self-drilling point: The self-drilling point penetrates 12-gauge to 18-gauge steel purlins without pre-drilling.
- Hex head drive: Hex head drive gives positive bit engagement during the drilling process.
- High pull-out strength: Delivers minimum pull-out of 1,000 lb per fastener in 12- and 14-gauge purlins, 800 lb in 16-gauge and 600 lb in 18-gauge.
- Corrosion resistant: Corrosion resistance surpasses the FM 4470 corrosion test.
- Extended point: Manufactured with a 3/4 in. extended point included in the overall length.
- FM Approved: Listed as FM Approved for use in metal retrofit roofing assemblies.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Carlisle SynTec |
| Sell unit | 1 carton of 500 fasteners |
| Product line | HP Purlin Fastener |
| Dimensions | 5-3/4 in. (146 mm) overall length |
| Thread length | 3 in. (75 mm) |
| Point | Self-drilling with 3/4 in. (19 mm) extended point |
| Head | Hex head |
| Purlin gauge range | 12-ga to 18-ga steel |
| Minimum penetration | 1-1/4 in. (31.75 mm), includes the 3/4 in. extension |
| Pull-out resistance | 1,000 lb (12-14 ga), 800 lb (16 ga), 600 lb (18 ga) per fastener |
| Pack quantity | 500 fasteners per carton |
| Approvals | FM Approved; surpasses FM 4470 corrosion test |
| Intended use | Securing membrane and PS RUSS to structural steel purlins in metal retrofit roofing systems |
| Compatible plates | 2 in. HP Polymer Seam Plates, 2-3/8 in. Piranha Plates |
| Product weight, complete sell unit | 20 lb |
Coverage & How Much You Need:
Fastener count depends on the specified fastening pattern for your membrane and plate layout; size the job from the Carlisle specification sheets for the assembly, not a fixed per-carton area.
Fit and Compatibility:
Designed for Carlisle metal retrofit roofing systems and compatible with 2 in. HP Polymer Seam Plates and 2-3/8 in. Piranha Plates (sold separately). Choose this longer length when assembly build-up requires more penetration; minimum 1-1/4 in. including the 3/4 in. point extension.
Frequently Asked Questions (FAQ):
Q: How many fasteners come in a carton?
A: 500 fasteners per carton; the data sheet lists 20 lb per carton for this size.
Q: What does the 5.75 in. length include?
A: The 5.75 in. (146 mm) is the overall length including a 3/4 in. extended drill point; minimum penetration of 1-1/4 in. counts the extension.
Q: Do I need to pre-drill the purlins?
A: No for 12- to 18-gauge steel purlins, which the self-drilling point penetrates; pre-drilling may be required for purlins heavier than 12-gauge.
Q: What driver should I use?
A: A standard clutch drive electric screw gun at moderate speed, maximum 1,800 rpm, driving the fastener flush with the top of the plate.
Q: Which plates do these fit?
A: 2 in. HP Polymer Seam Plates and 2-3/8 in. Piranha Plates; plates are sold separately.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
This 5-3/4 in. length suits retrofit assemblies with thicker insulation or taller attachment build-ups over the purlin; the rule is at least 1-1/4 in. penetration including the 3/4 in. point extension. Drive flush with the plate top at moderate screw-gun speed (max 1,800 rpm) to avoid burning out the drill point, and avoid over-driving. For heavier-than-12-gauge purlins, plan on pre-drilling per the Carlisle details.
Wear eye protection during drilling and installation, and follow Carlisle specifications and details for the assembly.
Order the Carlisle SynTec 5.75 in. HP Purlin Fastener 500-carton for your metal retrofit roof today.
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