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Nails

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Proper fasteners are a critical component in a sound wood frame structure. To ensure successful installations of its connectors, USP offers a full range of structurally-rated nails. All galvanized nails supplied by USP are Hot-dipped for greater corrosion resistance. Stainless steel nails are available on a stock basis in the size of 8d x 1-1/2" (see product chart). Any USP connector requiring a NA16D-RS, NA20D, NA25, or NA250 nail is shipped with the nails attached to the connector in convenient poly bags.

Finish: See chart

Installation:
• Allowable shear values assume nail embedment into the wood of the entire nail or 10 nail diameters (whichever is less). Otherwise, the nail must be embedded at least 6 nail diameters, with the load reduced using the following equation:
Reduced Load   =    Published Load x Actual Penetration
Nail Diameter x 10
• Load reductions may occur if nails are used other than those specified. See the chart Optional Nails for Face Mount Hangers and Straight Straps for load reduction factors regarding nail substitutions.


NAIL SPECIFICATION TABLE

Nails - NA series

MINIMUM FASTENER PENETRATION TABLE
Nail Penny Wire Gauge Shank Diameter
(inches)
Minimum
Penetration for
Full Shear Load
(inches)
Minimum
Penetration for
Reduced Shear Load2
(inches)
6d 11-1/2 ga. .113 1.13 0.68
8d 10-1/4 ga. .131 1.31 0.79
10d/16d Sinker 9 ga. .148 1.48 0.89
12d 9 ga. .148 1.48 0.89
16d 8 ga. .162 1.62 0.97
20d 6 ga. .192 1.92 1.15
1) Less than the specified nail penetration shall be multiplied by the applicable adjustment factor.
2) For penetration less than this distance, the nail has no value.
3) Penetrations are derived according to the 2001 NDS®.

Reduced Fastener Penetration Example:

HD210 - listed load is 1680 @ 100% for 16d common nails.

Reduced HD210 capacity if using 2x DF-L or SP header:
1680 lbs. x 1.5  = 1555 lbs. @ 100%
1.62


OPTIONAL NAILS FOR FACE MOUNT HANGERS AND STRAIGHT STRAPS LOAD TABLE
Catalog Nail Replacement Fastener1 Allowable Load Adjustment Factor
DF-L SP S-P-F LVL
16d common 8d common 0.70 0.75 0.60 0.70
16d common 10d Box 0.67 0.72 0.58 0.67
16d common 10d common 0.83 0.91 0.72 0.83
16d common 12d common 0.83 0.91 0.72 0.83
16d common 10d x 1-1/2 0.81 0.88 0.70 0.81
16d common 10d Sinker 0.59 0.64 0.51 0.59
16d common 16d Box 0.74 0.80 0.64 0.74
16d common 16d Sinker 0.83 0.91 0.72 0.83
16d common 16d x 2-1/2 1.00 1.00 0.86 1.00
16d common No. 8 x 1-1/2 Wood Screw 0.60 0.66 0.52 0.60
10d common 8d Box 0.63 0.68 0.54 0.63
10d common 10d Sinker 0.70 0.77 0.61 0.70
10d common 8d common 0.83 0.90 0.72 0.83
10d common 10d Box 0.80 0.87 0.70 0.80
10d common 8d x 1-1/4 0.64 0.69 0.55 0.64
10d common No. 8 x 1-1/2 Wood Screw 0.72 0.79 0.63 0.72
10d common 10d x 1-1/2 0.97 1.00 0.84 0.97
10d common 16d Sinker 1.00 1.00 0.86 1.00
10d common No. 8 x 1-1/2 Wood Screw 0.72 0.79 0.63 0.72
12d common 10d x 1-1/2 0.97 1.00 0.84 0.97
12d common 16d Sinker 1.00 1.00 0.86 1.00
12d common No. 8 x 1-1/2 Wood Screw 0.72 0.79 0.63 0.72
8d common 8d Box 0.75 0.81 0.65 0.75
8d common 8d x 1-1/4 0.76 0.83 0.66 0.76
8d common No. 8 x 1-1/2 Wood Screw 0.86 0.95 0.75 0.86
8d x 1-1/2 8d x 1-1/4 0.76 0.83 0.66 0.76
8d x 1-1/2 No. 8 x 1-1/2 Wood Screw 0.86 0.95 0.75 0.86
10d x 1-1/2 8d x 1-1/2 0.86 0.93 0.74 0.86
10d x 1-1/2 No. 8 x 1-1/2 Wood Screw 0.74 0.81 0.64 0.74
1) No. 8 x 1-1/2 Wood Screw has a shank diameter of 0.164" and shall conform to ANSI/ASME Standard B18.6.1-1981.
How to Use:
The base value is the catalog listed nail in Douglas Fir-Larch and the adjustment factor is the multiplier for the applicable replacement nail and wood combination.
• Adjustment factors may vary with some custom hangers or steel thicker than 10 gauge. Contact USP for exceptions.
• Roofing nails shall not be substituted for any nail size or type.


Optional Nails Example:

JL210 - listed load is 1595 lbs. @ 100% for 10d common nails.

If substituting:
8d common nails with DF-L or LVL:
1595 lbs. x .83 = 1323 lbs.

8d common nails with SP:
1595 lbs. x .90 = 1435 lbs.

8d common nails with S-P-F:
1595 lbs. x .72 = 1148 lbs.

No further reductions
are required.
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