Self Threading Grease Fittings
These fittings have special tapered drive threads to reshape the material in an untapped hole to provide a leak proof seal. They are most effectively installed by spinning into the untapped hole or by driving straight into the untapped hole. They can be replaced by a standard threaded fitting or another thread forming fitting.


MB Part # Description
Angle
Height
Shank
Hex
Hole Size
Alemite #
Lincoln #
MB1641-st 1/4-28" Special Taper
Str.
9/16"
7/32"
5/16"
.230-.235
3038-B
205010
MB1637-st 1/4-28" Special Taper
45°
13/16"
13/64"
3/8"
.230-.235
3053-B
205210
MB1911-st 1/4-28" Special Taper
90°
23/32"
13/64"
3/8"
.230-.235
3054-B
205410
MB1720 1/8" Special Taper
Str.
39/64"
13/64"
7/16"
.373-.380
1720-B
205000
MB1724 1/8" Special Taper
45°
53/64"
13/64"
7/16"
.373-.380
1724-B
205200
MB1722 1/8" Special Taper
65°
49/64"
13/64"
7/16"
.373-.380
1722-B
205300
MB1723 1/8" Special Taper
90°
49/64"
9/64"
7/16"
.373-.380
1723-B
205400
MB369584 1/4-28" Special Taper
Str.
31/32"
13/64"
7/16"
.230-.235
369584
n/a
MB369582 1/4-28" Special Taper
Str.
39/64"
9/64"
7/16"
.230-.235
369582
n/a
MB369607 1/4-28" Special Taper
Str.
9/16"
13/64"
7/16"
.230-.235
369607
n/a
MB369579 1/8-27" Special Taper
Str.
39/64"
13/64"
7/16"
.373-.380
369579
n/a