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Delrin® Knob Steel Retractables/Non-Locking
Vlier Delrin Knob Steel Retractable Plungers offer a cosmetically-appealing plunger design with improved appearance and functionality.
Special Features
- Contoured delrin knob
- Radiused, case-hardened steel plunger
- Tough steel body and spring
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- Attractive, black-oxide finish
- Non-locking design
- Unified ANSI & metric threads
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| Delrin Knob Steel Plungers - Non-Locking (ANSI Threads) |
| Part No. |
End Force, Lbs. |
A |
B |
C |
D |
E |
F |
G |
H
Hex |
Init. |
Final |
| PRT250* |
.12 |
.36 |
1/4-20 |
.50 |
.13 |
.16 |
.50 |
.97 |
.63 |
1/4 |
| PRT375 |
.25 |
2.0 |
3/8-16 |
.75 |
.18 |
.25 |
.75 |
1.4 |
.94 |
3/8 |
| PRT500 |
.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.
To Order with Locking Element - Add "P" at end of the part number. Initial End Forces +/- 50% Final End Forces +/- 25% |
| Delrin Knob Plungers - Steel/Non-Locking (Metric Threads) |
| Part No. |
End Force, N (Lbs.) |
A
mm
(in.) |
B
mm
(in.) |
C
mm
(in.) |
D
mm
(in.) |
E
mm
(in.) |
F
mm
(in.) |
G
mm
(in.) |
H
mm
(in.) |
Init. |
Final |
| MPRT6* |
0.5
(.11) |
1.5
(.34) |
M6 X 1.0 |
13
(.50) |
3
(.118) |
3
(.117) |
12
(.48) |
25
(.98) |
16
(.63) |
6
(.236) |
| MPRT10 |
1.0
(22) |
9.0
(2.02) |
M10 X 1.5 |
20
(.79) |
5
(.196) |
6
(.236) |
19
(.75) |
38
(1.5) |
25
(.98) |
10
(.39) |
| MPRT12 |
2.5
(.56) |
8.0
(1.80) |
M12 X 1.75 |
25
(.98) |
6
(.236) |
8
(.314) |
25
(.98) |
47
(1.85) |
31
(1.2) |
12
(.472) |
*No thread relief in M6 thread size.
To Order with Locking Element - Add "P" at end of the part number. |
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Spring Loaded Devices 
