Products | J.W. Winco Standard Parts

SPDN Spring Plungers Steel, with Delrin® Plastic Nose Pin, with Slot


Product description


SPDN spring plungers are used for designs where space is limited, but where appreciable plunger travel and high end pressures are required. Permits use where mating surfaces must be parallel to each other.

The nylon locking element is not recommended for use in aluminum applications.


Steel, case-hardened

Nose pin
Delrin® plastic


RoHS compliant

Technical drawing

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SPDN Steel Spring Plungers, with Delrin® Plastic Nose Pin, with Slot sketch

Part Options / Table


KSteel, standard spring load
KSSteel, high spring load


AWithout locking element
NWith locking element
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Dimensions in: Inch (change to Metric)
d2Length lw
Spring load ≈
Standard (Type K)


Spring load ≈
High (Type KS)

8 x 32*0.0700.4370.0520.50 lbf (2.22 N)1.50 lbf (6.67 N)1.50 lbf (6.67 N)4.75 lbf (21.12 N)
8 x 36*0.0700.4370.0520.50 lbf (2.22 N)1.50 lbf (6.67 N)1.50 lbf (6.67 N)4.75 lbf (21.12 N)
10 x 32*0.0930.4680.0650.75 lbf (3.33 N)2.50 lbf (11.12 N)1.75 lbf (7.78 N)6.25 lbf (27.80 N)
1/4 x 200.1190.5310.0781.00 lbf (4.44 N)3.50 lbf (15.56 N)3.00 lbf (13.34 N)10.50 lbf (46.70 N)
5/16 x 180.1350.5620.0841.25 lbf (5.56 N)4.00 lbf (17.79 N)3.75 lbf (16.68 N)15.50 lbf (68.94 N)
3/8 x 160.1860.6250.1101.50 lbf (6.67 N)5.00 lbf (22.24 N)4.50 lbf (20.01 N)18.50 lbf (82.29 N)
1/2 x 130.2480.7500.1511.75 lbf (7.78 N)5.50 lbf (24.46 N)5.00 lbf (22.24 N)28.00 lbf (124.55 N)
5/8 x 110.3101.0620.2152.00 lbf (8.89 N)8.50 lbf (37.80 N)7.00 lbf (31.13 N)50.00 lbf (222.41 N)
* These sizes come with a nylon patch instead of a nylon locking element

Build & Price

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Selected Part

Total US Dollars (net)
In stock: 40
In stock
Please note our quantity discounts (US Dollars).
≥ 500$2.60
Weight: 0.005 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: -
This part is new in our product range, no details are available at this time. For more recent details on the RoHS compatibility, please contact our Sales Department!
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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