FS Industries ENGINEERED STEEL PRODUCTS
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LiftAlloy QUAD CHAIN SLINGS
liftalloy chain slings

LiftAlloy chain slings, available in grade 100 for 7/32"
through 3/4", and grade 80 for 7/8" up to 1-1/4" are
recommended for rugged industrial applications in harsh
environments where flexibility, abrasion resistance, and
long life are required. OSHA required annual inspections
can be performed by our trained personnel.
Use of Chain Under Heat Conditions
When the chain itself is heated to temperatures shown
below, the Working Load Limit (Rated Capacity) should
be reduced as indicated.
FEATURES, ADVANTAGES AND BENEFITS

Promotes Safety
• Permanent steel capacity tag is serialized for identification
• Welded slings offer the security of tamper proof assemblies.
Saves Money
• Alloy Steel construction assures long lift.
• Can be repaired, proof tested and recertified.
Saves Time
• Easy to inspect for damage.
• Stores easily.
LiftAlloy QUAD CHAIN SLINGS
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PRICING - QOS - QUAD CHAIN SLINGS
Type QOS (CONTACT US FOR SPECIAL LENGTHS)
Chain
Size
(in.)		 ¹Rated
*Cap.@
60°
(lbs.)		 Approx.
Wgt.
5 foot
Reach
(lbs.)
Grade
 3' 4' 5' 6' 8' 10' 12' 14' 16' 18' 20' Latch
Kits ea.
Per hook
7/32
7,000
16
100
9/32
11,200
19
100
3/8
22,900
36
100
1/2
39,000
63
100
5/8
58,700
100
100
3/4
91,700
140
100
7/8
88,900
187
80
1
123,900
250
80
-
1 1/4
187,800
406
80
-
PRICING - QOG - QUAD CHAIN SLINGS
Type QOG (CONTACT US FOR SPECIAL LENGTHS)
Chain
Size
(in.)		 ¹Rated
*Cap.@
60°
(lbs.)		 Approx.
Wgt.
5 foot
Reach
(lbs.)		 Grade 3' 4' 5' 6' 8' 10' 12' 14' 16' 18' 20' Latch
Kits ea.
Per hook
7/32
7,000
16
100
9/32
11,200
19
100
3/8
22,900
36
100
1/2
39,000
63
100
5/8
58,700
100
100
3/4
91,700
140
100
7/8
88,900
187
80
1
123,900
250
80
-
1 1/4
187,800
406
80
-
Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.
PRICING - QOF - QUAD CHAIN SLINGS
Type QOF (CONTACT US FOR SPECIAL LENGTHS)
Chain
Size
(in.)		 ¹Rated
*Cap.@
60°
(lbs.)		 Approx.
Wgt.
5 foot
Reach
(lbs.)		 Grade 3' 4' 5' 6' 8' 10' 12' 14' 16' 18' 20' Latch
Kits ea.
Per hook
9/32
11,200
19
100
3/8
22,900
36
100
1/2
39,000
63
100
5/8
58,700
100
100
3/4
91,700
140
100
7/8
88,900
187
80
1
123,900
250
80
-
1 1/4
187,800
406
80
-
¹ Rated Capacity also referred to as Working Load Limit.
When using chain slings in a choke hitch, reduce the sling’s rated capacity by 20%
* Do not exceed rated capacities. Sling capacity decreases as the angle from horizontal decreases.
Slings should not be used at angles of less than 30°. Refer to chain chart and Effect of Angle chart below.

CHAIN SLING BASICS
LiftAlloy Grade 100 Chain Wear Allowance
Determine wear by measuring cross section at link
ends. If worn to less than the minimum thickness
allowable, chain should be removed from service.
Available in sizes 7/32" through 3/4".
Higher capacity per chain size can be used as an
   increased safety factor.
Higher capacity may allow use of smaller diameter
    chain for your lifts, reducing sling weight and cost.
Extreme abrasion resistance - more durable.
Powder-coated attachments for corrosion resistance.
Minimum thickness
based on OSHA
recommendations.
LiftAlloy Grade 80
Available in sizes 7/8" through 1-1/4".
Greater temperature tolerance.
Chain
Size (in.)
Min. Allowable
Thickness - A (in.)
  7/32
0.189
  9/32
0.239
 3/8
0.342
 1/2
0.443
 5/8
0.546
 3/4
0.687
 7/8
0.75
1
0.887
1-1/4
1.091
All Chain Slings
Meet or exceed all OSHA, ASTM and NACM standards.
Welded or mechanically assembled.
¹Rated Capacity Chart for LiftAlloy Chain Slings
Size of
Chain		 Nominal
Dim. (in.)		 Approx.
no. of
Links
per ft.		 Approx.
Weight
per
100 ft.
(lbs.)
(In.) (mm) Single
Chain @
90º (lbs.)		 Double Chain
Slings* (lbs.)		 Triple & Quad Chain
Slings* (lbs.)**		 Inside
Length		 Inside
Width
Grade 100
7/32 5.5 2,100 3,600 3,000 2,100 5,450 4,450 3,150 0.671 0.296 17.9 45
9/32 7.0 3,500 6,100 4,900 3,500 9,100 7,400 5,200 0.868 0.395 13.8 74
3/8 10.0 7,100 12,300 10,000 7,100 18,400 15,100 10,600 1.222 0.572 9.8 146
1/2 13.0 12,000 20,800 17,000 12,000 31,200 25,500 18,000 1.404 0.720 8.5 258
5/8 16.0 18,100 31,300 25,600 18,100 47,000 38,400 27,100 1.733 0.854 6.9 387
3/4 20.0 28,300 49,000 40,000 28,300 73,500 60,000 42,400 2.160 1.052 5.5 622
Grade 80
7/8 22.0 34,200 59,200 48,400 34,200 88,900 72,500 51,300 2.250 1.137 5.3 776
1 26.0 47,700 82,600 67,400 47,700 123,900 101,200 71,500 2.664 1.348 4.5 995
1 1/4 32.0 72,300 125,200 102,200 72,300 187,800 153,400 108,400 3.250 1.656 3.7 1,571
¹ Rated Capacity also referred to as Working Load Limit.
When using chain slings in a choke hitch, reduce the sling’s rated capacity by 20%
** A quad branch chain sling, especially when used on a load of rigid structure, is usually not sustaining the load evenly distributed on
each of its four branches. The maximum working load limits are therefore set at the same values as for triple branch chain slings of equal
quality and size and used with branches at same angle of inclination.
* Do not exceed rated capacities. Sling capacity decreases as the angle from horizontal decreases. Slings should
not be used at angles of less than 30º. Refer to chain chart above and Effect of Angle chart below.
EFFECT OF SLING ANGLE
Using slings at an angle can become deadly if that angle is not taken into consideration when selecting the sling to
be used. The tension on each leg of the sling is increased as the angle of lift, from horizontal, decreases. It is most
desirable for a sling to have a larger angle of lift, approaching 90°. Lifts with angles of less than 30° from horizontal
are not recommended. If you can measure the angle of lift or the length and height of the sling as rigged, you can
determine the properly rated sling for your lift. The Increased Tension method provides the increased tension as a
function of the sling angle. Alternatively, the sling Reduced Capacity method may be used to determine reduced lift
capacity for any angle.
INCREASED TENSION
Determine capacity
of sling needed
 choker hitch
REDUCED CAPACITY
Calculate rating of each sling
rigged at this angle
1. Determine the load weight (LW). 1. Calculate the reduction factor (RF).
a. Using the angle from horizontal,
    read across the Angle Chart to
    the corresponding number of the
   Reduction Factor column.
2. Calculate the Tension Factor [TF].
a. Determine the sling angle as mea-
    sured from the horizontal, and the
    corresponding tension factor (TF)
    from the effect of angle chart.
-OR-
b. Divide sling height* (H) by sling
    length* (L).
-OR-
b. Length* (L) divided by height*
    (H)
2. Reduction factor (RF) x the sling’s
    rated capacity for the type hitch that
    will be used = sling’s reduced rating.
3. Determine the share of the load
    applied to each sling leg (LW).
4. Multiply (LW) by (TF) to determine
    the sling leg tension. The capacity of
    the selected sling or sling leg must
    meet the calculated tension value.		 *Measured from a common horizontal
plane to the hoisting hook.
*Measured from a common horizontal plane
to the hoisting hook.
Effect of Angle Chart
 slings
Tension
Factor (TF)		 Angle From
Horizontal		 Reduction
Factor (RF)
1.000 90º 1.000
1.004 85º 0.996
1.015 80º 0.985
1.035 75º 0.966
1.064 70º 0.940
1.104 65º 0.906
1.155 60º 0.866
1.221 55º 0.819
1.305 50º 0.766
1.414 45º 0.707
1.555 40º 0.643
1.742 35º 0.574
2.000 30º 0.500
Example:
Vertical Choker rating of each sling:
6,000 lbs.
Measured Length (L) = 6 ft.
Measured Height (H) = 4 ft.
Reduction Factor (RF) = 4 (H) ÷ 6 (L) = .667
Example:
Load weight = 1,000 lbs.
Rigging - 2 slings in vertical hitch
Lifting Weight (LW) per sling = 500 lbs.
Measured Length (L) = 10 ft.
Measured Height (H) = 5 ft.
Tension Factor (TF) = 10 (L) ÷ 5 (H) = 2.0
Minimum Vertical Rated Capacity required
for this lift = 500 (LW) x 2.0 (TF) = 1000 lbs.
per sling
Sling capacity decreases as the angle
from horizontal decreases. Sling angles
of less than 30° are not recommended.
Reduced sling rating in this configuration
= .667
(RF) x 6,000 lbs. = 4,000 lbs. of lifting
capacity per sling
LiftAlloy Single Chain Slings, Lift-All, Sling, Lifting Slings, Sling Hook, Grab Hook, Foundry Hook, Latch Hook, Double
Chain Slings, Triple Chain Slings, Quad Chain Slings, and Basket Type Chain Slings from your source for material
handling equipment.
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