We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

SPEC Machine Hook Extension Spring - Machine Hook Extension Springs
SPECMachine Hook Extension Springs

SPEC Machine Hook Extension Spring

The SPEC Extension Spring is a 302 Stainless Steel Machine Hook Extension Spring, supplied as a 2 PK with a Plain finish. Key specifications include a Free Length of 20.2 mm, Wire Diameter of 0.5 mm, and Outer…

SKU 3G-OTH-680463

Brand
SPEC
Item
Machine Hook Extension Spring
Part Number
HM0550500020S
Category
Machine Hook Extension Springs
Available to Order
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 — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

SPEC
Manufacturer Part Number
HM0550500020S
Type
2 PK
O.D.
5.5 mm
Finish
Plain
Free Lg
20.2 mm
Wire Dia
0.5 mm

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

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

Product Description

The SPEC Extension Spring is a 302 Stainless Steel Machine Hook Extension Spring, supplied as a 2 PK with a Plain finish. Key specifications include a Free Length of 20.2 mm, Wire Diameter of 0.5 mm, and Outer Diameter of 5.5 mm (MPN HM0550500020S).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a SPEC extension spring used for?

A SPEC extension spring stores energy and provides resistance to pulling forces. It is commonly used in industrial machinery, automotive assemblies, and general manufacturing applications where a controlled return force is required.

What are the specifications of the SPEC extension spring HM0550500020S?

This SPEC extension spring is made of 302 stainless steel with a plain finish. It has a free length of 20.2 mm, wire diameter of 0.5 mm, and outer diameter of 5.5 mm. It is supplied as a 2-pack with manufacturer part number HM0550500020S.

Where to buy SPEC extension springs worldwide?

3G Electric supplies SPEC extension springs worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us to order the HM0550500020S or other SPEC spring sizes for your industrial application.

How to select the right SPEC extension spring for an application?

Select a SPEC extension spring by matching free length, wire diameter, outer diameter, and material to your load and deflection requirements. For the HM0550500020S, the 302 stainless steel offers corrosion resistance. Consult a spring selection guide or contact 3G Electric for assistance.

Not sure this is the right part? Photo-identify it

SPEC Products

3G Electric supplies SPEC machine hook extension springs. 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 SPEC

View all SPEC parts
Extension spring with machine hook ends, designed to store energy and resist pulling forces. Suitable for returning components to original position after extension in various mechanical assemblies. This pack of two springs features a plain finish, 1.5 in outer diameter, 0.177 in wire diameter, and 6 1/2 in free length
SPEC
Extension spring with machine hook ends, designed to store energy and resist pulling forces. Suitable for returning components to original position after extension in various mechanical assemblies. This pack of two springs features a plain finish, 1.5 in outer diameter, 0.177 in wire diameter, and 6 1/2 in free length
Music wire extension spring with machine hooks for pulling force applications. 0.045 in wire diameter, 0.42 in outer diameter, 1 1/8 in free length. Oil finish. Supplied in a 5-pack. Used in conveyor systems, gate mechanisms, and counterbalance assemblies
SPEC
Music wire extension spring with machine hooks for pulling force applications. 0.045 in wire diameter, 0.42 in outer diameter, 1 1/8 in free length. Oil finish. Supplied in a 5-pack. Used in conveyor systems, gate mechanisms, and counterbalance assemblies
This extension spring is made from music wire with an oil finish. It has a free length of 70.3 mm, wire diameter of 4.5 mm, and outer diameter of 22 mm. Machine hooks on each end allow secure attachment in tension applications such as counterbalancing, return mechanisms, and shock absorption in industrial equipment
SPEC
This extension spring is made from music wire with an oil finish. It has a free length of 70.3 mm, wire diameter of 4.5 mm, and outer diameter of 22 mm. Machine hooks on each end allow secure attachment in tension applications such as counterbalancing, return mechanisms, and shock absorption in industrial equipment
This SPEC extension spring is made of 302 stainless steel with a plain finish. It has machine hook ends for secure attachment in tension applications. The spring measures 1 in outer diameter, 3 in free length, and 0.115 in wire diameter. Typical uses include providing tension in assemblies such as counterbalances, door returns, and conveyor systems
SPEC
This SPEC extension spring is made of 302 stainless steel with a plain finish. It has machine hook ends for secure attachment in tension applications. The spring measures 1 in outer diameter, 3 in free length, and 0.115 in wire diameter. Typical uses include providing tension in assemblies such as counterbalances, door returns, and conveyor systems
Pack of five machine hook extension springs with a plain finish. Each spring has a 0.016 in wire diameter, 0.12 in outer diameter, and 1 3/8 in free length. Suitable for providing tension and return force in industrial machinery and equipment
SPEC
Pack of five machine hook extension springs with a plain finish. Each spring has a 0.016 in wire diameter, 0.12 in outer diameter, and 1 3/8 in free length. Suitable for providing tension and return force in industrial machinery and equipment
Machine hook extension spring made of music wire with a 2 mm wire diameter, 10 mm outer diameter, and 153.8 mm free length. Finished with oil. Used to store energy and provide resistance to pulling forces in tension applications such as industrial machinery, automotive assemblies, and material handling equipment
SPEC
Machine hook extension spring made of music wire with a 2 mm wire diameter, 10 mm outer diameter, and 153.8 mm free length. Finished with oil. Used to store energy and provide resistance to pulling forces in tension applications such as industrial machinery, automotive assemblies, and material handling equipment
This extension spring features machine hooks for tension applications in mechanical assemblies. With a free length of 1 3/4 in, wire diameter of 0.049 in, and outer diameter of 0.3 in, it is suitable for use in industrial machinery, conveyors, and automation systems. The plain finish provides a basic surface treatment. Sold as a 5-pack
SPEC
This extension spring features machine hooks for tension applications in mechanical assemblies. With a free length of 1 3/4 in, wire diameter of 0.049 in, and outer diameter of 0.3 in, it is suitable for use in industrial machinery, conveyors, and automation systems. The plain finish provides a basic surface treatment. Sold as a 5-pack
Machine hook extension spring made of music wire with an oil finish. Free length 6 in, wire diameter 0.115 in, outer diameter 1 in. Used to store and release energy in tension applications, commonly found in industrial machinery, automotive assemblies, and agricultural equipment where a pulling force is required to return components to their original position
SPEC
Machine hook extension spring made of music wire with an oil finish. Free length 6 in, wire diameter 0.115 in, outer diameter 1 in. Used to store and release energy in tension applications, commonly found in industrial machinery, automotive assemblies, and agricultural equipment where a pulling force is required to return components to their original position