Duro-Last HD Screws - Manual

Duro-Last: The Proven Performer®
"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.
DATA SHEET
www.duro-last.com 800-248-0280
DURO-LAST ® HD SCREWS
Description:
Duro-Last®, Inc. requires the use of Duro-Coated
Screws for mechanical fastening of the Duro-Last
roofing system. Duro-Last HD Screws are #14
diameter, are equipped with a P-3 truss head and are
available with either a drill point or a spade point.
Duro-Last HD Screws can be used in most types of
roofing applications. These Duro-Coated Screws must
pass twice the FM 4470 standard for corrosion
resistance, totaling 30 cycles in a Kesternich cabinet.
Duro-Last, Inc. also requires that all Duro-Coated
Screws pass 20º and 40º bend tests (hardness) and
be able to penetrate a 20 gauge deck in under three
seconds with a 50 lb. (222 N) load.
Installation:
1. Penetration into all approved deck types is 1 inch
(25 mm) minimum, from the top surface of the
deck.
Note:

Duro-Last, Inc. stocks HD screws in the sizes
noted in the table to the right. Additional sizes are
available on a drop ship basis. Please allow
adequate time for ordering and delivery of special
orders.
HD SCREW DIMENSIONS
Length Thread Length
Quantity per
Bucket
1.5 in. (38 mm) 1.5 in. (38 mm) 1000
2 in. (51 mm) 2 in. (51 mm) 1000
2.5 in. (64 mm) 2. 5 in. (64 mm) 1000
3 in. (76 mm) 3 in. (76 mm) 1000
3.5 in. (89 mm) 3 in. (76 mm) 1000
4 in. (102 mm) 3 in. (76 mm) 1000
4.5 in. (115 mm) 3 in. (76 mm) 1000
5 in. (127 mm) 4 in. (102 mm) 1000
5.5 in. (140 mm) 4 in. (102 mm) 1000
6 in. (152 mm) 4 in. (102 mm) 1000
7 in. (178 mm) 4 in. (102 mm) 500
8 in. (203 mm) 4 in. (102 mm) 500
9 in. (229 mm) 4 in. (102 mm) 500
10 in. (254 mm) 4 in. (102 mm) 500
11 in. (279 mm) 4 in. (102 mm) 500
12 in. (305 mm) 4 in. (102 mm) 500
18
Revised: 4/6/2011