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W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel
W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel
W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel
W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel
W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel
W66-40U Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel

W66-40U by Anchor Fluid Power | Square Socket Weld 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 2-1/2" 3000 Series Square Flange x 2-1/2" Socket Weld | Carbon Steel

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$457.36
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$394.75
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Specifications for Variant SKU: W66-40U Anchor
Shape (Orientation): Straight
Ends Configuration: 2-1/2in 3000 Series Square Flange, 2-1/2in Socket Weld
Material(s): Carbon Steel
3000 Series Square

3000 Series Square Socket Weld 4-Bolt Flanges

Carbon steel 3000 Series square-pattern 4-bolt flanges with a socket that pipe is inserted into and welded.

1

What are the key specifications?
Pattern

Carbon steel, 3000 Series square 4-bolt

Sizes

3000 Series: 3/4" to 4"

Face

O-ring groove or flat face

Mounting Kit

Suffix U: O-ring + 4 socket head cap screws

2

Which sizes are available?
3000 Series Square Socket Weld 4-Bolt Flanges dimension drawing
Pipe / Pad Size O-Ring Face O-Ring + Kit Flat Face A (in) B (in) C (in) D (in) E (in) F (in) G (in) H (in) J UNC-2B Kit O-Ring Kit Screws (4)
3000 Series
3/4" W66-12 W66-12U W76-12 2.250 1.438 1.000 0.500 1.250 0.752 1.062 0.406 3/8-16 2-214 3/8-16 x 1.75
1" W66-16 W66-16U W76-16 3.000 2.000 1.000 0.500 1.560 1.002 1.328 0.531 1/2-13 2-219 1/2-13 x 1.75
1-1/4" W66-20 W66-20U W76-20 3.000 2.000 1.000 0.500 1.750 1.252 1.672 0.531 1/2-13 2-222 1/2-13 x 1.75
1-1/2" W66-24 W66-24U W76-24 4.000 2.750 1.250 0.620 2.115 1.502 1.922 0.656 5/8-11 2-225 5/8-11 x 2.25
2" W66-32 W66-32U W76-32 4.000 2.750 1.250 0.620 2.490 2.002 2.406 0.656 5/8-11 2-228 5/8-11 x 2.25
2-1/2" W66-40 W66-40U W76-40 5.500 3.750 1.500 0.750 2.995 2.502 2.906 0.906 7/8-9 2-232 7/8-9 x 2.75
3" W66-48 W66-48U W76-48 5.500 3.750 1.500 0.750 3.615 3.002 3.547 0.906 7/8-9 2-237 7/8-9 x 2.75
4" W66-64 W66-64U W76-64 7.000 5.000 2.000 0.750 4.625 3.880 4.578 1.060 1-8 2-347 1-8 x 3.50

Dimensions in inches; letters as on the drawing. O-ring face (Fig. 1) and flat face (Fig. 2) share dimensions except the O-ring groove. “+ Kit” part numbers (suffix U) include the mounting kit: 1 O-ring and 4 socket head cap screws.

3

How do I read the part number?

Example: W76-32 = 3000 Series square socket weld 4-bolt flange, flat face, 2" pad.

Code Meaning
Series
W76 3000 Series Flat Face
W66 3000 Series O-Ring Face
Sizes
Dash number Pad (flange) size in 1/16"
U suffix Mounting kit included: O-ring + 4 SHCS
i
Dimensions are from Anchor Fluid Power and are subject to change without notice.

How is this product sold?

Each. Part numbers ending in U include the mounting kit (1 O-ring, 4 socket head cap screws); others are the flange only.

Anchor Fluid Power

Anchor Fluid Power is a Cincinnati, Ohio–based manufacturer of hydraulic connection components, with an additional stocking facility in Houston, Texas. The ISO 9001 and ISO 45001 registered company produces flanges, couplings, valves, and fittings, along with custom components built to specification. Anchor products are used in mobile and stationary hydraulic equipment across a wide range of industries.

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