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W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel
W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel
W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel
W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel
W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel
W51-16-16U Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel

W51-16-16U by Anchor Fluid Power | Deep Socket Weld Tube 4-Bolt Hydraulic Flange, O-Ring Face, with Mounting Kit | 1" Code 61 Flange x 1" Socket Weld | Carbon Steel

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$65.71
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$52.21
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$52.21
Specifications for Variant SKU: W51-16-16U Anchor
Shape (Orientation): Straight
Ends Configuration: 1in Code 61 Flange, 1in Socket Weld
Material(s): Carbon Steel
Applicable Specs & Approvals: SAE J518
SAE J518 Code 61

Deep Socket Weld Tube 4-Bolt Flanges

Carbon steel SAE J518 4-bolt flanges with a deep socket that tube is inserted into and welded.

1

What are the key specifications?
Material

Carbon steel

Standard

SAE J518 4-bolt flange pattern

Tube ODs

3/4" to 2-3/4"

Pad Sizes

Code 61: 3/4" to 2-1/2"

Face

O-ring groove or flat face

Mounting Kit

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

2

Which sizes are available?
Deep Socket Weld Tube 4-Bolt Flanges dimension drawing
Pad Size Tube OD 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 (in) K (in) L (in) M UNC-2B Kit O-Ring Kit Screws (4)
Code 61
3/4" 3/4" W51-12-12 W51-12-12U W5-12-12 1.970 2.560 0.875 1.875 1.420 0.710 1.250 0.625 0.752 0.560 0.406 3/8-16 2-214 3/8-16 x 1.50
3/4" 1" W51-16-12 W51-16-12U W5-16-12 1.970 2.560 0.875 1.875 1.420 0.710 1.250 0.750 1.002 0.560 0.406 3/8-16 2-214 3/8-16 x 1.50
1" 1" W51-16-16 W51-16-16U W5-16-16 2.170 2.750 1.031 2.062 1.500 0.710 1.560 0.875 1.002 0.630 0.406 3/8-16 2-219 3/8-16 x 1.50
1" 1-1/4" W51-20-16 W51-20-16U W5-20-16 2.170 2.750 1.031 2.062 1.500 0.710 1.560 1.000 1.252 0.630 0.406 3/8-16 2-219 3/8-16 x 1.50
1-1/4" 1-1/4" W51-20-20 W51-20-20U W5-20-20 2.680 3.120 1.188 2.312 1.610 0.830 1.750 1.125 1.252 0.690 0.469 7/16-14 2-222 7/16-14 x 1.75
1-1/4" 1-1/2" W51-24-20 W51-24-20U W5-24-20 2.680 3.120 1.188 2.312 1.610 0.830 1.750 1.250 1.502 0.690 0.469 7/16-14 2-222 7/16-14 x 1.75
1-1/2" 1-1/2" W51-24-24 W51-24-24U W5-24-24 3.070 3.660 1.406 2.750 1.770 0.980 2.115 1.375 1.502 0.750 0.531 1/2-13 2-225 1/2-13 x 1.75
1-1/2" 1-3/4" W51-28-24 W51-28-24U W5-28-24 3.070 3.660 1.406 2.750 1.770 0.980 2.115 1.500 1.752 0.750 0.531 1/2-13 2-225 1/2-13 x 1.75
2" 2" W51-32-32 W51-32-32U W5-32-32 3.540 4.000 1.688 3.062 1.770 0.980 2.490 1.875 2.002 0.870 0.531 1/2-13 2-228 1/2-13 x 1.75
2" 2-1/4" W51-36-32 W51-36-32U W5-36-32 3.540 4.000 1.688 3.062 1.770 0.980 2.490 2.000 2.252 0.870 0.531 1/2-13 2-228 1/2-13 x 1.75
2-1/2" 2-1/2" W51-40-40 W51-40-40U W5-40-40 4.090 4.490 2.000 3.500 1.970 0.980 2.995 2.375 2.502 1.000 0.531 1/2-13 2-232 1/2-13 x 1.75
2-1/2" 2-3/4" W51-44-40 W51-44-40U — 4.090 4.490 2.000 3.500 1.970 0.980 2.995 2.500 2.752 1.000 0.531 — 2-232 1/2-13 x 1.75

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: W51-24-20 = Code 61 deep socket weld tube 4-bolt flange, O-ring face, 1-1/4" pad, 1-1/2" tube OD.

Code Meaning
Series
W5 Code 61 Flat Face
W51 Code 61 O-Ring Face
Sizes
First dash number Tube OD in 1/16"
Second dash number Pad (flange) size in 1/16"
U suffix Mounting kit included: O-ring + 4 SHCS
4

Where can I find product documents?
PDF

Anchor Catalog Page: Deep Socket Weld Tube 4-Bolt Flanges

Dimension tables by part number with mounting hardware.

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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