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Hook & Hook Turnbuckles

Hook & Hook Turnbuckles


Hook & Hook

Meets the performance requirements of
Federal Specifications FF-T-791b,
Type 1 Form 1 - CLASS 5, except for those
provisions required of the contractor.

Turnbuckle Hook Hook Specs
Thread
Diameter
& Take
Up
(in.)		 Working
Load
Limit *
(lbs.)		 Weight
Each
(lbs.)		 Dimensions
(in.)
A D E
Closed		 F J
Open		 K
Closed		 M
Closed		 N
Closed		 BB
1/4 x 4 400 .30 .25 .45 1.59 1.27 11.12 7.12 11.94 7.94 4.00
5/16 x 4 1/2 700 .47 .31 .50 1.94 1.50 12.81 8.31 13.81 9.31 4.50
3/8 x 6 1000 .78 .38 .56 2.30 1.77 16.50 10.50 17.72 11.72 6.00
1/2 x 6 1500 1.60 .50 .66 2.94 2.28 17.82 11.82 19.38 13.38 6.00
1/2 x 9 1500 1.83 .50 .66 2.94 2.28 23.82 14.82 25.38 16.38 9.00
1/2 x 12 1500 2.28 .50 .66 2.94 2.28 29.82 17.82 31.38 19.38 12.00
5/8 x 6 2250 2.75 .63 .84 3.69 2.81 19.25 13.25 21.25 15.25 6.00
5/8 x 9 2250 3.38 .63 .84 3.69 2.81 25.25 16.25 27.25 18.25 9.00
5/8 x 12 2250 3.50 .63 .84 3.69 2.81 31.25 19.25 33.25 21.25 12.00
3/4 x 6 3000 3.89 .75 .98 4.52 3.33 20.88 14.88 23.28 17.28 6.00
3/4 x 9 3000 5.28 .75 .98 4.52 3.33 26.88 17.88 29.28 20.28 9.00
3/4 x 12 3000 5.43 .75 .98 4.52 3.33 32.88 20.88 35.28 23.28 12.00
3/4 x 18 3000 6.33 .75 .98 4.52 3.33 44.88 26.88 47.28 29.28 18.00
7/8 x 12 4000 8.10 .88 1.13 5.19 3.78 34.25 22.25 37.00 25.00 12.00
7/8 x 18 4000 9.95 .88 1.13 5.19 3.78 46.25 28.25 49.00 31.00 18.00
1 x 6 5000 9.33 1.00 1.25 5.84 4.25 23.63 17.63 26.69 20.69 6.00
1 x12 5000 11.93 1.00 1.25 5.84 4.25 35.63 23.63 38.69 26.69 12.00
1 x18 5000 14.00 1.00 1.25 5.84 4.25 47.63 29.63 50.69 32.69 18.00
1 x 24 5000 17.25 1.00 1.25 5.84 4.25 59.63 35.63 62.69 38.69 24.00
1 1/4 x 12 6500 20.58 1.25 1.50 7.22 5.13 37.94 25.94 41.56 29.56 12.00
1 1/4 x 18 6500 23.00 1.25 1.50 7.22 5.13 49.94 31.94 53.56 35.56 18.00
1 1/4 x 24 6500 27.00 1.25 1.50 7.22 5.13 61.94 37.94 65.56 41.56 24.00
1 1/2 x 12 7500 27.50 1.50 1.88 8.34 5.75 40.94 28.94 44.44 32.44 12.00
1 1/2 x 18 7500 31.00 1.50 1.88 8.34 5.75 52.96 34.94 56.44 38.44 18.00
1 1/2 x 24 7500 37.50 1.50 1.88 8.34 5.75 64.94 40.94 68.44 44.44 24.00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Proof Load is 2.5 times Working Load Limit. Ultimate load is 5 times Working Load Limit.

  • Hot Dip galvanized steel.
  • End fittings are Quenched and Tempered, bodies heat treated bt mormalizing.
  • Hooks are forged with a greater cross sectional area that results in a stronger hook with better fatigue properties.
  • TURNBUCKLES RECOMMENDED FOR STRAIGHT OR IN-LINE PULLS ONLY.
  • Modified UNJ thread for improving fatigue properties.
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