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SKU: A-000566
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50 Pcs McMaster-Carr 3408A6 Slotted Spring Plungers – 3/8"-16 Thread, 6–21 lb Force, SS Thread Lock

New and unused. Clean and in excellent condition — ideal for precision mechanical applications. Bulk quantity of 50 units.

Product Details:

Manufacturer: McMaster-Carr
Part Number: 3408A6
Type: Slotted Spring Plunger with Ball-Nose
Thread Size: 3/8"-16 UNC
Plunger Force: 6–21 lb (initial to final force range)
Body Material: 18-8 Stainless Steel
Ball Material: 440C Stainless Steel (hardened)
Tip Style: Ball-Nose
Drive Type: Slotted
Thread Locking: Pre-applied thread-locking compound
Quantity: 50 pieces
Corrosion Resistance: Excellent (suitable for harsh environments)

Features:

  • Built-in thread locker ensures secure installation without backing out under vibration
  • Hardened 440C stainless steel ball provides wear resistance and long service life
  • 18-8 stainless steel body offers excellent corrosion resistance for use in marine, industrial, or outdoor environments
  • Ideal for indexing, locating, and positioning components in machinery or fixtures
Sale price $49.75 Regular price $199.00
Shipping calculated at checkout.

Pickup available at 1128 Western St

Usually ready in 24 hours

Shipping and Delivery

Shipping Costs

  • Customers are responsible for all shipping costs associated with their order.
  • Shipping fees will be calculated at checkout based on the weight, dimensions, and destination of your package.
  • Any applicable taxes, duties, or customs fees for international orders are also the responsibility of the customer.

Processing Time

  • Orders are processed within 2 business days after payment has been received.
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  • If your package arrives damaged, please contact us within within 48 hours with photos of the damage, and we will assist in filing a claim with the carrier.

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If you have any further questions about our shipping policy, feel free to reach out to us at info@misterscientific.com. We're here to help!

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50 Pcs McMaster-Carr 3408A6 Slotted Spring Plungers – 3/8"-16 Thread, 6–21 lb Force, SS Thread Lock
50 Pcs McMaster-Carr 3408A6 Slotted Spring Plungers – 3/8"-16 Thread, 6–21 lb Force, SS Thread Lock