Cut Sheet

Unirac Technical Datasheets
Delivering Value through Innovation
R
A HILTI GROUP COMPANY
Pub 120723-1td V1.0 July 2012
2-Piece Standoff Technical Datasheet
2-Piece Aluminum Standoffs .................................................. 1
2-Piece Aluminum Standoff with SolarMount-I 1-ange connection .................... 2
2-Piece Aluminum Standoff with L-foot connection ................................. 2
X
Z
Y
Standoff and Base Material:
• One of the following extruded aluminum alloys: 6005-T5,
6105-T5, 6061-T6
• Ultimate tensile: 38 ksi; Yeild: 35 ksi
• Clear or Dark anodized
Weight:
• 3” Standoff (as shown): 0.522 pounds (237 g)
• Add 0.086 pounds per inch (39 g/ inch)
Allowable and design loads are valid for a Unirac 2-piece
aluminum standoff
Attach with zinc plated carbon steel or stainless steel fasteners
Resistance and safety factors are determined according to Part 1A section 9 of
the 2005 Aluminum Design Manual
NOTE: Loads are given for the standoff only. Check load limits for lag
screw or other attachment method.
Applied Load
Direction
Average
Ultimate
Load
lbs (N)
Allowable
Load
lbs (N)
Safety
Factor,
W
Design
Load
lbs (N)
Resistance
Factor,
F
Tension/
Compression,
Y±
3266
(14528)
1089
(4844)
3.00 1633 (7264) 0.500
PZ Bending,
Applied
Moment*
559 ft lbs
(758 Nm)
250 ft lbs
(339 Nm)
2.24
378 ft lbs
(512 Nm)
0.676
2-Piece Aluminum Standoffs
Part No. 004300C, 004400C, 004600C, 004700C, 004300D, 004400D, 004600D, 004700D
Standoffs
Dimensions specied in inches unless noted
*Example: If the module is mounted 6” (0.5 ft) from the base of the standoff,
the allowable side load is 250 ft*lbs/ 0.5 ft = 500 lbs
1