Duro-Last Auger Fasteners - Manual

Duro-Last: The Proven Performer®
"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.
www.duro-last.com 800-248-0280
DATA SHEET
2009
23
DURO-LAST ® AUGER FASTENER
AUGER FASTENER DIMENSIONS
Length
Quantity per
Box
2 inch (51 mm) 500
2.5 inch (64 mm) 500
3 inch (76 mm) 500
3.5 inch (89 mm) 500
4 inch (102 mm) 500
4.5 inch (114 mm) 500
5 inch (127 mm) 500
5.5 inch (140 mm) 500
6 inch (152 mm) 500
6.5 inch (165 mm) 500
7 inch (178 mm) 500
7.5 inch (190 mm) 500
8 inch (203 mm) 500
8.5 inch (216 mm) 250
9 inch (229 mm) 250
10 inch (254 mm) 250
Description:
The Duro-Last ® Auger Fastener is made from glass-filled
nylon with an internal square drive. A specially designed
plate and fastener combination is manufactured with one
way tabs on the underside of the fastener head that lock
into the ratchet teeth of the 2 inch (52 mm) metal plate.
The 2 inch (52 mm) metal plate is manufactured with
barbs that maximize membrane holding power.
The auger fasteners are designed to attach insulation and
roofing membrane to cementitious wood fiber, gypsum,
and lightweight concrete decks. The auger fasteners
surpass the FM 4470 specifications
Installation:
1. A 7/16 inch (12 mm) - 9/16 (14 mm) pilot hole is
required on gypsum and lightweight concrete decks
depending on density of the deck. No pilot hole is
required on cementitious wood fiber decks unless
overlaying an existing roof system in which case a hole
must be drilled thru the roof system to the top of the
roof deck.
2. Penetration into the deck is 1.5 inch (38 mm),
minimum.
3. Install the fastener with a 1/4 inch (6.3 mm)
square-drive bit. One bit is supplied in each box of
Auger fasteners.
Note:
•
On Factory Mutual insured projects, penetration is
2 inch (51 mm), minimum.
•
Duro-Last, Inc. stocks auger fasteners in the sizes
noted in the table to the right. Additional sizes, up to
14 inch (356 mm), are available on a drop ship basis.
Please allow adequate time for ordering and delivery
of special orders.