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Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com          Ordering/Questions

Flange Bushings


Flange Bushings are used in through-bolt applications, allowing the use of a smaller diameter bolt to achieve weight reduction without any attendant reduction in the bearing surface of the fastener against the Spar wall.  In repair applications, they can be used with an original-sized bolt (and all original fittings) to repair an elongated or distorted hole in the Spar wall, simply by drilling the hole to a larger diameter. Essentially, Flange Bushings are used to replace larger bolts with smaller bolts, as, in most Spar applications, it is not the tensile strength of the bolt, but the increase in shear strength gained by the larger bearing surface that is important.
Standard size Flange Bushings are listed below, other sizes are available - please specify dimensions when inquiring.
Flange Bushings are often used with Compression Tubes, See Compression Tubes.
See also, Tangs Main Page.
 

Flange Bushing – 1/2" OD x 5/16" ID: K-9630:
SS Flange Bushing is 1/2" OD x 5/16" ID (.491" x .332"). Used with a 5/16" bolt it replaces a 1/2" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 1/2" OD Flange Bushing is 1" (.998") long, Flange Head is 19/32" (.590") diameter x 3/32" thick. Commonly used with Kenyon 'Dog-Bone' Clevis Tangs for 1/4" & 5/16" Pins.

 

Long Flange Bushing – 1/2" OD x 5/16" ID: K-9630L:
SS Flange Bushing is 1/2" OD x 5/16" ID (.491" x .332"). Used with a 5/16" bolt it replaces a 1/2" bolt in thicker Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. Long 1/2" OD Flange Bushing is 1 1/4" (1.260") long, Flange Head is 5/8" (.624") diameter x 1/16" thick.*

 


Flange Bushing – 1/2" OD x 3/8" ID: K-9630-6:
SS Flange Bushing is 1/2" OD x 3/8" ID (.491" x .377"). Used with a 3/8" bolt it replaces a 1/2" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 1/2" OD Flange Bushing is 1" (.998") long, Flange Head is 19/32" (.590") diameter x 3/32" thick.

 

 

Flange Bushing – 1/2" OD x 3/8" ID: K-9630-6V:
SS Flange Bushing is 1/2" OD x 3/8" ID (.498" x .393"). Used with a 3/8" bolt it replaces a 1/2" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 1/2" OD Flange Bushing is 3/4" (.752") long, Flange Head is 3/4" (.738") diameter x 1/16" thick.

K-9630-6

 


Flange Bushing – 5/8" OD x 1/2" ID: K-9630-1008:
SS Flange Bushing is 5/8" OD x 1/2" ID. Used with a 1/2" bolt it replaces a 5/8" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 5/8" OD Flange Bushing is 7/8" long, Flange Head is 7/8" diameter x 3/32" thick.
K-10455LS

Flange Bushing – 11/16" OD x 3/8" ID: K-9631:
SS Flange Bushing is 11/16" OD x 3/8" ID. Used with a 3/8" bolt it replaces a 5/8" bolt in some Shroud Tang applications (where Tang and mast have 11/16" holes) to achieve significant weight reduction without any attendant reduction in bearing surface. 11/16" OD Flange Bushing is 1 3/8" long, Flange Head is 7/8" diameter x 1/16" thick. Commonly used with Kenyon 'Dog-Bone' Clevis Tangs for 3/8", 7/16", & 1/2" Pins.

Flange Bushing – 3/4" OD x 1/2" ID: K-10455:
SS Flange Bushing is 3/4" OD x 1/2" ID. Used with a 1/2" bolt it replaces a 3/4" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 3/4" OD Flange Bushing is 1 3/16" long, Flange Head is 1" diameter x 3/16" thick.

 

K-10455

 

Short Flange Bushing – 3/4" OD x 1/2" ID: K-10455S:
SS Flange Bushing is 3/4" OD x 1/2" ID. As K-10455, above, but shorter. 3/4" OD Flange Bushing is 1" long, Flange Head is 1" diameter x 3/16" thick. HX-D

 

Lightweight Flange Bushing – 3/4" OD x 1/2" ID: K-10455LS:
SS Flange Bushing is 3/4" OD x 1/2" ID. As K-10455, above, but shorter and with a smaller Head to achieve maximum weight reduction. 3/4" OD Flange Bushing is 3/4" long, Flange Head is 7/8" diameter x 1/8" thick. Sch


Flange Bushing – 1" OD x 3/4" ID: K-10455-1:
SS Flange Bushing is 1" OD x 3/4" ID. Used with a 3/4" bolt it replaces a 1" bolt in Shroud Tang applications to achieve significant weight reduction without any attendant reduction in bearing surface. 1" OD Flange Bushing is 1 7/16" long, Flange Head is 1 1/4" diameter x 3/16" thick.

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