Mule-Hide HDP #14 Self-Drilling Fasteners, 3 in. to 10 in., 250 to 1,000 Per Box

Mule-Hide HDP #14 fasteners are self-drilling screws for securing single-ply membrane and accessory details. The line is offered in 3 in., 8 in., 9 in., and 10 in. lengths, packed in boxes of 250 to 1,000 depending on length. Choose the length that suits your insulation and deck thickness.

Key Features:

• Self-drilling point: The #14 self-drilling design drills, taps, and fastens in a single operation to speed installation.
• Four lengths: Available in 3 in., 8 in., 9 in., and 10 in. lengths to accommodate varied insulation and fastening depths.
• Contractor-size boxes: Box counts range from 250 to 1,000 fasteners depending on length, sized for crew work.
• Roofing-grade build: Designed for use with Mule-Hide single-ply roofing systems.
• Long fastening reach: The 8 in. to 10 in. options allow penetration through thick insulation assemblies into the deck.

Specifications Table:

Fit and Compatibility:

Intended for use with Mule-Hide single-ply roofing products and accessories. Fastener length should be selected based on insulation thickness and deck type.

Frequently Asked Questions (FAQ):

Q: What is included in a box?
A: Each box contains one length of #14 HDP self-drilling fasteners: 1,000 pieces of the 3 in., 500 of the 8 in., and 250 of the 9 in. or 10 in. lengths.

Q: Which length should I choose?
A: Select a length long enough to pass through the membrane, any insulation, and sufficiently into the deck; 3 in. suits thin assemblies while 8 in. to 10 in. cover thick insulation.

Q: Are these self-drilling?
A: Yes, the #14 HDP fasteners are categorized as self-drilling screws.

Q: Will they work with TPO and PVC systems?
A: They are sold as Mule-Hide single-ply roofing fasteners; confirm length and deck suitability for your specific system before installing.

Q: How are they packaged?
A: All lengths sell by the box, with counts of 250, 500, or 1,000 depending on the length selected.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Match fastener length to the total assembly depth so threads fully engage the deck; under-long fasteners lose pull-out capacity. On retrofit reroofs over thick insulation, the 9 in. and 10 in. options reduce the need for multiple fastener types. Keep box counts in mind when estimating per-square fastener quantities for membrane attachment details.

Wear eye protection and gloves when driving fasteners, and follow the roofing system manufacturer’s fastening pattern and local code requirements.

Order Mule-Hide HDP #14 self-drilling fasteners today and keep your single-ply roof details fastened right.