3/4″ Type BY

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3/4″ Type BY



The 3/4″ Type BY High Friction Clamp is designed to be used in applications that require higher tensile and frictional capacities than standard clamps. It may be used with parallel or tapered flanges.  The recess in the top of the BY will capture the head of an A325 bolt.  When using nut and washer on top of clamp, the BYP should be used to fill the recess.  See chart below for tail length and packing combination to match flange thickness.


Product Description

3/4″ Type BY Short

The BY recess is suitable for the hexagonal head of 3/4” Grade 5 bolts.  The Type BYP may be used to fill in the recess allowing for any grade bolt or nut to be tightened down to its surface.

Product Name Bolt Grade A Bolt Diameter    B       C    D1 D2 E1 E2 Width Torque Tensile SWL (lbs) per bolt Friction SWL (lbs.) per 2 bolts Painted Steel Friction SWL (lbs.) per 2 bolts Galvanized Steel
3/4 Type BY A325 3/4 1-9/16 1-1/2 7/8 1-7/16 3/8 11/16 2-3/16 346 7087 2974 6362


See chart below for tail length and packing combinations.  Do not exceed the Safe Working Load (SWL) specified.  The Frictional failure for the Type BY Clamp is 1mm or 0.039 inches slip from its original position.


Tail Length/Packing Combination

Flange Thickness 1/8″ 3/16″ 1/4″ 5/16″ 3/8″ 7/16″ 1/2″ 9/16″ 5/8″ 11/16″ 3/4″ 13/16″ 7/8″ 15/16″ 1″
Tail Length/Packing Combination X X X X 1 1 1+BH2 1+(2xBH2) 1+BF3 2 2 2+BH2 2+(2xBH2) 2+BF3 2+BH2+BF3
For Thicknesses greater than 1″ please contact us.                  


BH2                               BF3                                BF4

Product Code Bolt Dia. A B C D
BH2G20 3/4″ 1/16″ 2″ 2″ 13/16″
BF3G20 3/4″ 3/16″ 2-3/16″ 2-3/16″ 13/16″
BF4G20 3/4″ 3/8″ 2-3/16″ 2-3/16″ 13/16″

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