SPEC Machine Hook Extension Spring
The SPEC Extension Spring is a music wire machine hook extension spring, supplied in a 2-pack (MPN HM0550500038M). It features a 37.7 mm free length, 0.5 mm wire diameter, 5.5 mm outer diameter, and an oil finish.
SKU 3G-OTH-679471
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The SPEC Extension Spring is a music wire machine hook extension spring, supplied in a 2-pack (MPN HM0550500038M). It features a 37.7 mm free length, 0.5 mm wire diameter, 5.5 mm outer diameter, and an oil finish.
Frequently Asked Questions
What is a SPEC extension spring used for?
A SPEC extension spring is used to provide a pulling force in mechanical assemblies, such as counterbalances, garage doors, and industrial machinery. The music wire construction offers high tensile strength and fatigue resistance for repeated loading cycles.
What are the specifications of the SPEC extension spring HM0550500038M?
This SPEC extension spring has a 37.7 mm free length, 0.5 mm wire diameter, 5.5 mm outer diameter, and an oil finish. It is supplied as a 2-pack with manufacturer part number HM0550500038M.
Where to buy SPEC extension springs worldwide?
3G Electric supplies SPEC extension springs worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine parts like the HM0550500038M to support your maintenance and production needs.
How to select the right extension spring for an application?
To select the right extension spring, match free length, wire diameter, outer diameter, and material to your load and deflection requirements. The SPEC HM0550500038M uses music wire for high strength; verify that the oil finish suits your environment.
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.
