Plungers - Spring - Knurled Handle - Locking - Steel

Plungers -> Spring -> Knurled Handle -> Locking -> Steel

There are 5 products in the sub-categories of Plungers - Spring - Knurled Handle - Locking - Steel. Browse the Plungers - Spring - Knurled Handle - Locking - Steel products table.

Category Details

A selection of Steel Locking Knurled Handle Spring Plungers. Items shown with Long-Lok have a dry threadlocking sealant applied to thread.

  • A compact mechanical component with a spring-loaded ball or pin inside a housing that applies consistent, predictable force. Internal spring compresses when pressure is applied to the ball or pin, allowing it to settle into designated positions or recess.
  • Provides a reliable holding or locating mechanism in various industrial applications where precise alignment or securing of parts is needed.
  • Also known as ball plungers or spring-loaded pins.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Plungers - Spring - Knurled Handle - Locking - Steel category on the Small Parts & Bearings online store.
Thread Size (A) Thread Length (B) Initial Pressure (F1) Final Pressure (F2) Tip Diameter (D) Tip Length (C) Indicative
Image
Thread Size (A)
1/4-20 UNC (6.35mm)

Thread Length (B)
10.2
mm

(Equiv. 0.402 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
8.9
N
Tip Diameter (D)
3.2
mm
Tip Length (C)
3.2
mm
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Head Length (F): 10.3   
Part Number: PLST-064C-102-HKCL-009
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$28.32 AUD
$28.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A) Thread Length (B) Initial Pressure (F1) Final Pressure (F2) Indicative
Image
Thread Size (A)
1/4-20 UNC (6.35mm)

Thread Length (B)
10.2
mm

(Equiv. 0.402 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
8.9
N
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Tip Diameter (D): 3.2 mm    Tip Length (C): 3.2 mm    Head Length (F): 10.3   
Part Number: PLST-064C-102-HKCL-009
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$28.32 AUD
$28.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/4-20 UNC (6.35mm)

Thread Length (B)
10.2
mm

(Equiv. 0.402 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
8.9
N
Tip Diameter (D)
3.2
mm
Tip Length (C)
3.2
mm
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Head Length (F): 10.3    Additional: With Locking Element   
Part Number: PLST-064C-102-HKCLLK-009
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$24.50 AUD
$29.40 AUD $24.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/4-20 UNC (6.35mm)

Thread Length (B)
10.2
mm

(Equiv. 0.402 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
8.9
N
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Tip Diameter (D): 3.2 mm    Tip Length (C): 3.2 mm    Head Length (F): 10.3    Additional: With Locking Element   
Part Number: PLST-064C-102-HKCLLK-009
Spring Plungers - 1/4-20 UNC - 6.35mm - 10.2 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$24.50 AUD
$29.40 AUD $24.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
3/8-16 UNC (9.53mm)

Thread Length (B)
19.1
mm

(Equiv. 0.752 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
13.4
N
Tip Diameter (D)
4.7
mm
Tip Length (C)
5.6
mm
Spring Plungers - 3/8-16 UNC - 9.53mm - 19.1 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Head Length (F): 13.0   
Part Number: PLST-095C-191-HKCL-013
Spring Plungers - 3/8-16 UNC - 9.53mm - 19.1 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$25.32 AUD
$30.38 AUD $25.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
3/8-16 UNC (9.53mm)

Thread Length (B)
19.1
mm

(Equiv. 0.752 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
13.4
N
Spring Plungers - 3/8-16 UNC - 9.53mm - 19.1 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Tip Diameter (D): 4.7 mm    Tip Length (C): 5.6 mm    Head Length (F): 13.0   
Part Number: PLST-095C-191-HKCL-013
Spring Plungers - 3/8-16 UNC - 9.53mm - 19.1 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$25.32 AUD
$30.38 AUD $25.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/2-13 UNC (12.7mm)

Thread Length (B)
16.5
mm

(Equiv. 0.65 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
17.8
N
Tip Diameter (D)
6.3
mm
Tip Length (C)
6.4
mm
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Head Length (F): 18.5   
Part Number: PLST-127C-165-HKCL-018
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$31.32 AUD
$37.58 AUD $31.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/2-13 UNC (12.7mm)

Thread Length (B)
16.5
mm

(Equiv. 0.65 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
17.8
N
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Tip Diameter (D): 6.3 mm    Tip Length (C): 6.4 mm    Head Length (F): 18.5   
Part Number: PLST-127C-165-HKCL-018
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$31.32 AUD
$37.58 AUD $31.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/2-13 UNC (12.7mm)

Thread Length (B)
16.5
mm

(Equiv. 0.65 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
17.8
N
Tip Diameter (D)
6.3
mm
Tip Length (C)
6.4
mm
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Head Length (F): 18.5    Additional: With Locking Element   
Part Number: PLST-127C-165-HKCLLK-018
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$34.68 AUD
$41.62 AUD $34.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1/2-13 UNC (12.7mm)

Thread Length (B)
16.5
mm

(Equiv. 0.65 in.)
Initial Pressure (F1)
2.2
N
Final Pressure (F2)
17.8
N
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel
Material: Steel    Tip Diameter (D): 6.3 mm    Tip Length (C): 6.4 mm    Head Length (F): 18.5    Additional: With Locking Element   
Part Number: PLST-127C-165-HKCLLK-018
Spring Plungers - 1/2-13 UNC - 12.7mm - 16.5 mm - 2.2 N Knurled Handle - Steel Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$34.68 AUD
$41.62 AUD $34.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.