Torque Specs for 1/2 Inch Grade 8 Bolts to Install Demco Trailer Coupler DM14793-81
Question:
I just finished installing your Demco-Trailer-Coupler-DM14793-81coupler on my car trailer using grade 8 1/2inch bolts and Nyloc Nuts. I forgot to ask if there was a set of instructions that may list what the 1/2inch bolts should be torqued too. Other wise do you have a suggestion? Also, I have safety chains. Can they be attached with the same bolts if the bolt is long enough or should they be attached separately? I figure grade 8 1/2inch should be enough but thought Id ask.
asked by: Curt B
Expert Reply:
Starting with the safety chains they really need to be attached to the trailer frame and not the coupler hardware. If there is no where to attach the chains on the trailer you can weld on safety chain mounting brackets such as # MB12, # MB38, or # MB58.
For 1/2 inch Grade 8 bolts you will want to torque them to 115 foot pounds.
Products Referenced in This Question
Brophy Safety Chain Mounting Bracket - 6-1/8" Long x 1/2" Diameter - Weld On - Qty 1
- Accessories and Parts
- Tow Bar
- Trailer Safety Chains
- Safety Chain Parts
- 1/2 Inch Diameter
- Mounting Brackets
- 6-1/8 Inch Long
- Brophy
more information >
Brophy Safety Chain Mounting Bracket - 4" Long x 3/8" Diameter - Weld On - Qty 1
- Accessories and Parts
- Tow Bar
- Trailer Safety Chains
- Safety Chain Parts
- 3/8 Inch Diameter
- Mounting Brackets
- 4 Inch Long
- Brophy
more information >
Brophy Safety Chain Mounting Bracket - 8-3/8" Long x 5/8" Diameter - Weld On - Qty 1
- Accessories and Parts
- Tow Bar
- Trailer Safety Chains
- Safety Chain Parts
- 5/8 Inch Diameter
- Mounting Brackets
- 8-3/8 Inch Long
- Brophy
more information >
Product Page this Question was Asked From
Demco A-Frame Trailer Coupler w/ Jack Hole - eZ-Latch - Black - 2" Ball - Bolt On - 10K
- A-Frame Trailer Coupler
- Standard Coupler
- Bolt-On
- 10000 lbs GTW
- 2 Inch Ball Coupler
- Auto Latch
- Demco
more information >
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