Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
INNOVATIVE COMPONENTS Nonlocking Knurled-Knob Retractable Spring Plunger - Nonlocking Knurled-Knob Retractable Spring Plungers
INNOVATIVE COMPONENTSNonlocking Knurled-Knob Retractable Spring Plungers

INNOVATIVE COMPONENTS Nonlocking Knurled-Knob Retractable Spring Plunger

<p>The INNOVATIVE COMPONENTS Nonlocking Knurled-Knob Retractable Spring Plunger (MPN: SP4C--SK3----21) is a versatile, manually operated plunger designed for positioning, locking, and quick-release applications…

SKU 3G-OTH-181341

Also listed as: SP4CSK321 · SP4C SK3 21 · SP4C-SK3-21

Brand
INNOVATIVE COMPONENTS
Item
Nonlocking Knurled-Knob Retractable Spring Plunger
Part Number
SP4C--SK3----21
Category
Nonlocking Knurled-Knob Retractable Spring Plungers
Available to Order
Also known as:SP4C--SK3----21INNOVATIVE COMPONENTS
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

INNOVATIVE COMPONENTS
Manufacturer Part Number
SP4C--SK3----21
Type
Without Thread-Locker
Thread
1/4"-20

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

INNOVATIVE COMPONENTS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

<p>The INNOVATIVE COMPONENTS Nonlocking Knurled-Knob Retractable Spring Plunger (MPN: SP4C--SK3----21) is a versatile, manually operated plunger designed for positioning, locking, and quick-release applications. Featuring a 1/4"-20 thread and a knurled knob for easy grip, this nonlocking model allows for retraction without thread-locker, making it ideal for frequent adjustments. Constructed from durable steel, it suits jigs, fixtures, and machinery in manufacturing and maintenance.</p><p>For Singapore procurement, 3G Electric offers SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia. Worldwide shipping is available.</p>

Frequently Asked Questions

What is the thread size and type of this spring plunger?

The thread size is 1/4"-20, and it is a nonlocking type without thread-locker.

Can I get a quote in SGD and what about GST for Singapore orders?

Yes, SGD quotes are available on request. For Singapore buyers, GST is handled by 3G Electric.

Used in

Common applications for INNOVATIVE COMPONENTS
Fixture positioning — INNOVATIVE COMPONENTS pull-ring spring plungers (GP8C--SR-----21) for locating workpieces in welding jigs.
Tool change indexing — INNOVATIVE COMPONENTS knurled-knob plungers (GP8C--SM--L--21) for locking tool holders in CNC turrets.
Conveyor gate stops — INNOVATIVE COMPONENTS weld-mount indexing plungers (GI1/2T1.5-B-TR6) for adjustable stop positions on sorting lines.
Assembly line detents — INNOVATIVE COMPONENTS spring plungers (GP6C--SR-----21) for temporary retention of covers or panels.
Machine guard locking — INNOVATIVE COMPONENTS nonlocking plungers (SP4C--SK3----21) for quick-release safety barriers.
Pallet registration — INNOVATIVE COMPONENTS pull-ring plungers (GP1C--SR-----21) for aligning pallets on automated transfer systems.
Not sure this is the right part? Photo-identify it

INNOVATIVE COMPONENTS Products

3G Electric supplies INNOVATIVE COMPONENTS nonlocking knurled-knob retractable spring plungers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from INNOVATIVE COMPONENTS

View all INNOVATIVE COMPONENTS parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first