Plungers - Spring - No Handle - Steel - Hex Nose - Threadlock

Plungers -> Spring -> No Handle -> Steel -> Hex Nose -> Threadlock

There are 7 products in the sub-categories of Plungers - Spring - No Handle - Steel - Hex Nose - Threadlock. Browse the Plungers - Spring - No Handle - Steel - Hex Nose - Threadlock products table.

Category Details

A selection of Threadlock Hex Nose Steel No Handle Spring Plungers. Steel body and acetal hex nose with Threadlock Locking compound

  • 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.
  • Items shown with Long-Lok have a dry threadlocking sealant applied to thread.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Plungers - Spring - No Handle - Steel - Hex Nose - Threadlock 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)
25.4
mm

(Equiv. 1 in.)
Initial Pressure (F1)
13.4
N
Final Pressure (F2)
57.8
N
Tip Diameter (D)
3.2
mm
Tip Length (C)
4.8
mm
Spring Plungers - 1/4-20 UNC - 6.35mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 25.4 mm    Drive: Hex   
Part Number: PLST-064C-254-C-HXLK-058
Spring Plungers - 1/4-20 UNC - 6.35mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$15.86 AUD
$15.86 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)
25.4
mm

(Equiv. 1 in.)
Initial Pressure (F1)
13.4
N
Final Pressure (F2)
57.8
N
Spring Plungers - 1/4-20 UNC - 6.35mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 3.2 mm    Tip Length (C): 4.8 mm    Body Length (B): 25.4 mm    Drive: Hex   
Part Number: PLST-064C-254-C-HXLK-058
Spring Plungers - 1/4-20 UNC - 6.35mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$15.86 AUD
$15.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
5/16-18 UNC (7.94mm)

Thread Length (B)
25.4
mm

(Equiv. 1 in.)
Initial Pressure (F1)
13.4
N
Final Pressure (F2)
66.7
N
Tip Diameter (D)
3.2
mm
Tip Length (C)
4.8
mm
Spring Plungers - 5/16-18 UNC - 7.94mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 25.4 mm    Drive: Hex   
Part Number: PLST-079C-254-C-HXLK-067
Spring Plungers - 5/16-18 UNC - 7.94mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$14.59 AUD
$17.51 AUD $14.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
5/16-18 UNC (7.94mm)

Thread Length (B)
25.4
mm

(Equiv. 1 in.)
Initial Pressure (F1)
13.4
N
Final Pressure (F2)
66.7
N
Spring Plungers - 5/16-18 UNC - 7.94mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 3.2 mm    Tip Length (C): 4.8 mm    Body Length (B): 25.4 mm    Drive: Hex   
Part Number: PLST-079C-254-C-HXLK-067
Spring Plungers - 5/16-18 UNC - 7.94mm - 25.4 mm - 13.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$14.59 AUD
$17.51 AUD $14.59 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)
28.6
mm

(Equiv. 1.126 in.)
Initial Pressure (F1)
24.5
N
Final Pressure (F2)
64.5
N
Tip Diameter (D)
4.8
mm
Tip Length (C)
4.8
mm
Spring Plungers - 3/8-16 UNC - 9.53mm - 28.6 mm - 24.5 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 28.6 mm    Drive: Hex   
Part Number: PLST-095C-286-C-HXLK-065
Spring Plungers - 3/8-16 UNC - 9.53mm - 28.6 mm - 24.5 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$16.41 AUD
$19.69 AUD $16.41 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)
28.6
mm

(Equiv. 1.126 in.)
Initial Pressure (F1)
24.5
N
Final Pressure (F2)
64.5
N
Spring Plungers - 3/8-16 UNC - 9.53mm - 28.6 mm - 24.5 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 4.8 mm    Tip Length (C): 4.8 mm    Body Length (B): 28.6 mm    Drive: Hex   
Part Number: PLST-095C-286-C-HXLK-065
Spring Plungers - 3/8-16 UNC - 9.53mm - 28.6 mm - 24.5 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$16.41 AUD
$19.69 AUD $16.41 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)
31.8
mm

(Equiv. 1.252 in.)
Initial Pressure (F1)
29.4
N
Final Pressure (F2)
77.4
N
Tip Diameter (D)
6.4
mm
Tip Length (C)
6.4
mm
Spring Plungers - 1/2-13 UNC - 12.7mm - 31.8 mm - 29.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 31.8 mm    Drive: Hex   
Part Number: PLST-127C-318-C-HXLK-077
Spring Plungers - 1/2-13 UNC - 12.7mm - 31.8 mm - 29.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$24.95 AUD
$29.95 AUD $24.95 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)
31.8
mm

(Equiv. 1.252 in.)
Initial Pressure (F1)
29.4
N
Final Pressure (F2)
77.4
N
Spring Plungers - 1/2-13 UNC - 12.7mm - 31.8 mm - 29.4 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 6.4 mm    Tip Length (C): 6.4 mm    Body Length (B): 31.8 mm    Drive: Hex   
Part Number: PLST-127C-318-C-HXLK-077
Spring Plungers - 1/2-13 UNC - 12.7mm - 31.8 mm - 29.4 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$24.95 AUD
$29.95 AUD $24.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
5/8-11 UNC (15.88mm)

Thread Length (B)
38.1
mm

(Equiv. 1.5 in.)
Initial Pressure (F1)
46.7
N
Final Pressure (F2)
113.4
N
Tip Diameter (D)
7.9
mm
Tip Length (C)
7.9
mm
Spring Plungers - 5/8-11 UNC - 15.88mm - 38.1 mm - 46.7 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 38.1 mm    Drive: Hex   
Part Number: PLST-159C-381-C-HXLK-113
Spring Plungers - 5/8-11 UNC - 15.88mm - 38.1 mm - 46.7 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$26.95 AUD
$32.35 AUD $26.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
5/8-11 UNC (15.88mm)

Thread Length (B)
38.1
mm

(Equiv. 1.5 in.)
Initial Pressure (F1)
46.7
N
Final Pressure (F2)
113.4
N
Spring Plungers - 5/8-11 UNC - 15.88mm - 38.1 mm - 46.7 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 7.9 mm    Tip Length (C): 7.9 mm    Body Length (B): 38.1 mm    Drive: Hex   
Part Number: PLST-159C-381-C-HXLK-113
Spring Plungers - 5/8-11 UNC - 15.88mm - 38.1 mm - 46.7 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$26.95 AUD
$32.35 AUD $26.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
3/4-10 UNC (19.05mm)

Thread Length (B)
44.5
mm

(Equiv. 1.752 in.)
Initial Pressure (F1)
29.8
N
Final Pressure (F2)
165.9
N
Tip Diameter (D)
9.5
mm
Tip Length (C)
7.9
mm
Spring Plungers - 3/4-10 UNC - 19.05mm - 44.5 mm - 29.8 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 44.5 mm    Drive: Hex   
Part Number: PLST-191C-445-C-HXLK-166
Spring Plungers - 3/4-10 UNC - 19.05mm - 44.5 mm - 29.8 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$76.77 AUD
$92.13 AUD $76.77 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
3/4-10 UNC (19.05mm)

Thread Length (B)
44.5
mm

(Equiv. 1.752 in.)
Initial Pressure (F1)
29.8
N
Final Pressure (F2)
165.9
N
Spring Plungers - 3/4-10 UNC - 19.05mm - 44.5 mm - 29.8 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 9.5 mm    Tip Length (C): 7.9 mm    Body Length (B): 44.5 mm    Drive: Hex   
Part Number: PLST-191C-445-C-HXLK-166
Spring Plungers - 3/4-10 UNC - 19.05mm - 44.5 mm - 29.8 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$76.77 AUD
$92.13 AUD $76.77 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1-8 UNC (25.4mm)

Thread Length (B)
61.1
mm

(Equiv. 2.406 in.)
Initial Pressure (F1)
71.2
N
Final Pressure (F2)
302.5
N
Tip Diameter (D)
12.7
mm
Tip Length (C)
12.7
mm
Spring Plungers - 1-8 UNC - 25.4mm - 61.1 mm - 71.2 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Body Length (B): 61.1 mm    Drive: Hex   
Part Number: PLST-254C-611-C-HXLK-302
Spring Plungers - 1-8 UNC - 25.4mm - 61.1 mm - 71.2 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$69.95 AUD
$83.95 AUD $69.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Thread Size (A)
1-8 UNC (25.4mm)

Thread Length (B)
61.1
mm

(Equiv. 2.406 in.)
Initial Pressure (F1)
71.2
N
Final Pressure (F2)
302.5
N
Spring Plungers - 1-8 UNC - 25.4mm - 61.1 mm - 71.2 N No Handle - Steel Body with Acetal
Material: Steel Body with Acetal    Tip Diameter (D): 12.7 mm    Tip Length (C): 12.7 mm    Body Length (B): 61.1 mm    Drive: Hex   
Part Number: PLST-254C-611-C-HXLK-302
Spring Plungers - 1-8 UNC - 25.4mm - 61.1 mm - 71.2 N No Handle - Steel Body with Acetal Plunger
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 14, 2025
$69.95 AUD
$83.95 AUD $69.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.