Hand Retractable Plungers — Knurled Head — Locking
Knurled Head
Zinc Plated Steel or Stainless Steel

Knurled Head drawing
Used in machining applications as positioners, loading pins, indexing devices.

Improved design allows plunger nose to be locked in fully retracted position. Plunger nose has chamfer on end to assure easy alignment. Full pressures are the force pounds needed to move the nose the distance shown in "C" columns.

Available with or without locking element. To order without locking element, add a "P" to the end of the part number.

The nylon locking element holds the plunger body securely in place without the need for lock nuts or other devices. We recommend a 90° countersink 1/32" larger than the major diameter of the mating thread to prevent damaging the element.

Radiused Delrin® Nose. Click here for sizes.

Plunger can be withdrawn completely into the body and locked in a fully retracted position. To engage the plunger, simply turn the handle to line up with slot in body.

All light pressure have an "L" stamped into the knurl.

Phenolic noses prevent marring of aluminum, brass or other soft materials.


Heavy Pressure
Knurled Head Plungers — Locking
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.001
-.002
D
E
F
Net Lbs
Per 100
Start
Full
Steel
33809
$8.67
1.0
3.5
10-32
13/32
3/32
.104
3/16
3/8
1
33810
$8.67
1.0
5.0
1/4-20
1/2
1/8
.124
1/4
1/2
3
33811
$9.36
1.5
6.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33812
$10.45
1.5
8.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33813
$11.27
2.5
10.0
1/2-13
7/8
1/4
.249
3/8
1"
13
33813A
$12.40
5.0
10.0
5/8-11
1"
5/16
.311
13/32
1-1/8
20
Stainless Steel
33819
$14.55
1.0
3.5
10-32
13/32
3/32
.104
3/16
3/8
1
33820
$14.55
1.0
5.0
1/4-20
1/2
1/8
.124
1/4
1/2
3
33821
$15.51
1.5
6.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33822
$17.10
1.5
8.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33823
$18.36
2.5
10.0
1/2-13
7/8
1/4
.249
3/8
1"
13
33823A
$20.21
5.0
10.0
5/8-11
1"
5/16
.311
13/32
1-1/8
20
Heavy Pressure — Phenolic Nose
Knurled Head Plungers — Locking
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.001
-.002
D
E
F
Net Lbs
Per 100
Start
Full
Phenolic Nose — Steel
33840
$9.14
1.0
5.0
1/4-20
1/2
1/8
.124
1/4
1/2
3
33841
$9.85
1.5
6.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33842
$10.99
1.5
8.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33843
$11.84
2.5
10.0
1/2-13
7/8
1/4
.249
3/8
1"
13
Phenolic Nose — Stainless Steel
33850
$15.30
1.0
5.0
1/4-20
1/2
1/8
.124
1/4
1/2
3
33851
$16.30
1.5
6.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33852
$17.98
1.5
8.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33853
$19.30
2.5
10.0
1/2-13
7/8
1/4
.249
3/8
1"
13
Light Pressure
Knurled Head Plungers — Locking
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.001
-.002
D
E
F
Net Lbs
Per 100
Start
Full
Steel
33814
$8.67
.5
2.0
10-32
13/32
3/32
.104
3/16
3/8
1
33815
$8.67
.5
2.5
1/4-20
1/2
1/8
.124
1/4
1/2
3
33816
$9.36
.75
3.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33817
$10.45
.75
4.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33818
$11.27
1.25
5.0
1/2-13
7/8
1/4
.249
3/8
1"
13
33818A
$12.40
3.0
6.0
5/8-11
1"
5/16
.311
13/32
1-1/8
20
Stainless Steel
33824
$14.55
.5
2.0
10-32
13/32
3/32
.104
3/16
3/8
1
33825
$14.55
.5
2.5
1/4-20
1/2
1/8
.124
1/4
1/2
3
33826
$15.51
.75
3.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33827
$17.10
.75
4.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33828
$18.36
1.25
5.0
1/2-13
7/8
1/4
.249
3/8
1"
13
33828A
$20.21
3.0
6.0
5/8-11
1"
5/16
.311
13/32
1-1/8
20
Light Pressure — Phenolic Nose
Knurled Head Plungers — Locking
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.001
-.002
D
E
F
Net Lbs
Per 100
Start
Full
Phenolic Nose — Steel
33845
$9.14
.5
2.5
1/4-20
1/2
1/8
.124
1/4
1/2
3
33846
$9.85
.75
3.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33847
$10.99
.75
4.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33848
$11.84
1.25
5.0
1/2-13
7/8
1/4
.249
3/8
1"
13
Phenolic Nose — Stainless Steel
33855
$15.30
.5
2.5
1/4-20
1/2
1/8
.124
1/4
1/2
3
33856
$16.30
.75
3.0
5/16-18
5/8
3/16
.155
9/32
5/8
5
33857
$17.98
.75
4.0
3/8-16
3/4
7/32
.186
5/16
3/4
7
33858
$19.30
1.25
5.0
1/2-13
7/8
1/4
.249
3/8
1"
13

New*
Metric — Heavy Pressure
Knurled Head Plungers — Locking
Part No.
Price/ Unit
End Pressure Newtons
Class 6g ISO
A
B
C
+.025
-.050
D
E
F
Net Lbs
Per 100
Start
Full
Steel
33829*
$8.95
4.5
15.5
M5 x 0.8
10.3
2.36
2
4.7
9.5
1
33830
$9.40
4.5
22.0
M6 x 1.0
12.7
3.17
3
6.3
12.7
3
33831
$10.08
6.5
26.5
M8 x 1.25
15.8
4.75
4
7.0
15.8
5
33832
$11.12
6.5
35.5
M10 x 1.5
19.0
5.50
5
7.9
19.0
7
33833
$12.00
11
44.5
M12 x 1.75
22.2
6.35
6
9.4
25.4
13
33833A*
$12.40
22
44.5
M16 x 2.0
25.4
7.92
8
10.3
28.6
20
New
Stainless Steel
33829SS
$14.00
4.5
15.5
M5 x 0.8