QUICK RELEASE DEVICES:
Stainless Steel Delrin® Knob Plungers - Locking & Non-locking


Part No. SPRT250 (non-locking)
Part No. SPRT250 (non-locking)
Part No. SPRT250 (non-locking)
Part No. SPRTL250 (locking)
Part No. SPRTL250 (locking)
Part No. SPRTL250 (locking)

Vlier White Delrin Knob Stainless Steel Retractable Plungers are a new retractable plunger design with improved appearance and functionality. Ideal for food and medical industry applications.

Locking Dimensions
Non-Locking Dimensions
Lbf/Newton Conversion:
Enter known value and click on empty value to view results.
lbf = N
Part No.
End Force, Lbs.
Thread
(in.)
(in.)
(in.)
(in.)
(in.)
(in.)
(in.)
No Locking Element
W/Locking Element
Init.
Final
A
B
C
D
E
F
G
H
Hex
SPRT250* SPRT250P*
.12
.36
1/4-20
.50
.13
.16
.50
.97
.63
1/4
SPRT375 SPRT375P
.25
2.0
3/8-16
.75
.18
.25
.75
1.4
.94
3/8
SPRT500 SPRT500P
.50
1.75
1/2-13
1.0
.25
.31
1.0
1.9
1.25
1/2

*No thread relief in 1/4-20 thread size.
Initial End Forces +/-50% Final End Forces +/- 25%.

Lbf/Newton Conversion:
Enter known value and click on empty value to view results.
lbf = N
Part No.
End Force, Lbs.
Thread
(in.)
(in.)
(in.)
(in.)
(in.)
(in.)
(in.)
No Locking Element
w/Locking Element
Init.
Final
A
B
C
D
E
F
G
H
Hex
SPRTL250* SPRTL250P*
.12
.36
1/4-20
.50
.13
.16
.50
.97
.63
1/4
SPRTL375 SPRTL375P
.25
2.0
3/8-16
.75
.18
.25
.75
1.4
.94
3/8
SPRTL500 SPRTL500P
.50
1.75
1/2-13
1.0
.25
.31
1.0
1.9
1.25
1/2

*No thread relief in 1/4-20 thread size.
Initial End Forces +/-50% Final End Forces +/- 25%.

Lbf/Newton Conversion:
Enter known value and click on empty value to view results.
lbf = N
Part No.
End Force, N
Thread
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
No Locking Element
w/Locking Element
Init.
Final
A
B
C
D
E
F
G
H
Hex
SMPRT6* SMPRT6P*
0.5
1.5
M6 x 1.0
13
3
3
12
25
16
6
SMPRT10 SMPRT10P
1.0
9.0
M10 x 1.5
20
5
6
19
38
25
10
SMPRT12 SMPRT12P
2.5
8.0
M12 x 1.75
25
6
8
25
47
31
12

*No thread relief in M6 thread size.

Lbf/Newton Conversion:
Enter known value and click on empty value to view results.
lbf = N
Part No.
End Force, N
Thread
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
No Locking Element
w/Locking Element
Init.
Final
A
B
C
D
E
F
G
H
Hex
SMPRTL6* SMPRTL6P*
0.5
1.5
M6 x 1.0
13
3
3
12
25
16
6
SMPRTL10 SMPRTL10P
1.0
9.0
M10 x 1.5
20
5
6
19
38
25
10
SMPRTL12 SMPRTL12P
2.5
8.0
M12 x 1.75
25
6
8
25
47
31
12

*No thread relief in M6 thread size.

Delrin® is a registered trademark of DuPont Corp.