Chain Specifications Next Page >
MINIMUM NUMBER OF CHAINS REQUIRED*
SIZE OF CHAIN
WEIGHT OF SECURED LOAD (LBS.)
5/16” (8mm) H.T.
3/8” (10mm) H.T.
5/16” TRANS
3/8” (8mm) TRANS
3/8” ALLOY.
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
3
4
4
5
6
6
7
2
2
3
3
4
4
5
5
2
3
3
4
4
5
5
6
2
2
2
3
3
4
4
4
2
2
2
3
3
3
4
4
 

Minimum Number of Tie-downs Required (Nt)

Nt = ((Load on Trailer) x .5) / Chain W.L.L.
With a minimum of two tie-downs total

* The number of tie-downs required must also satisfy notes 1 - 5.
This Chart is meant to be a guideline and should not be construed as an official regulation.

Notes:
1. Tie-down assembly every eight feet of lading (federal rule is every 10 feet).
2. If articles are tiered, and they rest securely on each other, then they may be tied down as if they were a single level.
3. Multiple articles less than eight feet that are butt against each other securely fore and aft may be secured by tie-down assemblies over 4 x 4 timbers or metal angles.
4. Pole trailers must satisfy note 1 or have two tie-downs securing the load to both the forward bolster and the rear bolster.
5. Restraining angle of tie-down must be less than 60 degrees.

BINDER CHAIN SPECIFICATION
Size
Grade
Description
W.L.L.
5/16” (8mm)
3/8” (10mm)
43
43
High Test
High Test
3900 lbs.
5400 lbs.
5/16” (8mm)
3/8” (10mm)
70
70
Transport
Transport
4700 lbs.
6600 lbs.
3/8” (.406)
80
Alloy
7100 lbs.

BINDER CHAIN INSPECTION

Each tie-down should be inspected for the following danger signs:
1. Twisted or bent links
2. Nicks or gouges
3. Excessive wear at bearing points
4. Stretched links
5. Distorted or damaged attachments
6. Unapproved repair links

ILLUSTRATIONS OF UNAPPROVED REPAIR LINKS
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