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Vang-Master Accessories
Harken offers Vang-Master boom fittings, mast fittings and pumps to 
accompany the vangs. The stainless steel fittings can be easily mounted, 
pivoting like a hinge to fit the mast. Sturdy hardware fits the boom appropriately 
for easy Vang-Master connection. 
If Required: Select Mast And Boom Fittings – Sold Separately
Determine if a rounded or flat fitting will provide the most integral boom mount. 
Use the stock applications chart (page 155) to match the Vang-Master 
unit you have selected with the corresponding boom and mast fittings. 
Select the correct fasteners.
Use the chart information (below) or the fitting itself to 
determine the correct hole spacing and location before drilling.
FLAT BASE BOOM FITTINGS
ROUNDED BASE BOOM FITTINGS
PIVOTING MAST FITTINGS
PUMPS
Part No.
Description
Fastener
Size
No. of 
Fasteners
Pin 
Ø
Toggle 
Width
A
B
C
D
E
F
r
in
mm
in
mm
in
mm
Vang-Master Fittings
VMB12
Rounded base boom fitting — units 1 & 2
1/4
6
8
3/8
9.5
1/4
6.35
5
1 1/2
1 3/8
1 1/4
3/4
1 3/8
1 3/4
VMB34
Rounded base boom fitting — units 3 & 4
1/4
6
10
1/2
12.7
1/4
6.35
6 1/2
1 5/8
1 7/16
1 1/2
1 1/8
2 1/8
1 3/4
VMB45
Rounded base boom fitting — units 4 & 5
1/4
6
10
1/2
12.7
1/2
12.7
6 1/2
1 5/8
1 7/16
1 1/2
1 1/8
2 1/4
1 3/4
VMBF12
Flat base boom fitting — units 1 & 2
3/16
5
2
3/8
9.5
1/4
6.35
4
3/4
3/8
-
1 3/8
–
–
VMBF34
Flat base boom fitting — units 3 & 4
1/4
6
4
1/2
12.7
1/4
6.35
7
1
3/8
7/8
2 1/8
–
–
VMBF45
Flat base boom fitting — units 4 & 5
1/4
6
4
1/2
12.7
3/8
9.5
7
1
3/8
7/8
2 5/16
–
–
VMM12
Pivoting mast fitting — units 1& 2
1/4
6
3
3/8
9.5
1/4
6.35
4 1/4
7/8
2 5/8
1 3/4
-
2 1/4
–
VMM34
Pivoting mast fitting — units 3 & 4
1/4
6
4
1/2
12.7
1/4
6.35
4 3/4
1
3 1/2
1 3/8
1 1/4
2 7/8
–
VMM45
Pivoting mast fitting — units 4 & 5
1/4
6
4
1/2
12.7
1/2
12.7
5 1/2
1
3 5/8
1 1/2
1 7/8
3 1/2
–
Part No.
Description
Weight
Height
(closed)
oz
g
in
mm
Vang-Master Pumps
VMP2
Vang-Master pump/hand pump/Aluminium — Black
5.3
150
11 4/5
300
VMP3
Vang-Master pump/floor drive/Steel — Red
60
1700
25
635
Lezyne stand-up and hand-held 
pumps fit naturally to the Vang-Master 
Schrader valve, helping adjust boom 
height and resistance level. 

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