Columbia Manufacturing - Forged Steel Extension Links

Columbia MFG, LLC 9116 NE 130th Ave Suite 106 Vancouver, WA 98682 Phone: 360-882-0410 Fax: 360-882-8728

Forged Steel Extension Links

Material Specifications Forged steel meeting the requirements of ASTM 668, latest revision; AISI 1040/1045 carbon steel Quenched and tempered, final hardness 212/248 BHN. Magnetic particle inspected. Clevis Bolt 3/4" clevis pinwith cotter pin is standard for all clevis end units. Optional Clevis Bolt 3/4" x 3 1/2" hex head bolt, 3/4" hex nut and 3/16" x 1 1/4" brass cotter pin is available - designate with suffix BNC for this option. Bolts shall meet requirement of ASTM1-325, latest revision. Finish All steel shall be hot dipped galvanized per ASTM A153, latest revision. Tolerances Lengths 36" and less +/_ 3/8" Lengths over 36", +/- 3/4"		Catalog Number Figure Number Dimensions (inches) Ultimate Strength lbs Weight (lbs) per 100 PCS A B C D E F G H 1112 1 12" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 425 1118 1 18" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 500 1124 1 24" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 575 1130 1 30" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 650 1136 1 36" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 725 1142 1 42" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 800 1148 1 48" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 875 2112 2 12" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 425 2118 2 18" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 500 2124 2 24" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 575 2130 2 30" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 650 2136 2 36" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 725 2142 2 42" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 800 2148 2 48" 1 3/16" 1 3/4" 2"  -  -  - 3/4" 30,000 875 3112 3 12" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 340 3118 3 18" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 415 3124 3 24" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 490 3130 3 30" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 565 3136 3 36" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 640 3142 3 42" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 715 3148 3 48" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 790 4112 4 12" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 340 4118 4 18" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 415 4124 4 24" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 490 4130 4 30" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 565 4136 4 36" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 640 4142 4 42" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 715 4148 4 48" 1 3/16" 1 3/4" 2" 2" 11/2" 5/8" 3/4" 30,000 790
Figure 1 Clevis-Clevis	Figure 2 Clevis-Clevis 90º	Figure 3 Clevis-Eye	Figure 4 Clevis-Eye 90º

 

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This page revised 08/14/18