SPEC Extension Spring: Music Wire, 1 1/2 in Free Lg, 0.037 in Wire Dia, 0.42 in O.D.
The SPEC Extension Spring is a machine hook extension spring made of music wire, supplied in a 5-pack (SKU MH04200371500M, MPN MH04200371500M). It features a 0.037 in wire diameter, 0.42 in O.D., 1 1/2 in free…
SKU 3G-OTH-681337
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 machine hook extension spring made of music wire, supplied in a 5-pack (SKU MH04200371500M, MPN MH04200371500M). It features a 0.037 in wire diameter, 0.42 in O.D., 1 1/2 in free length, and an oil finish.
Frequently Asked Questions
What is a SPEC extension spring used for?
A SPEC extension spring with machine hooks is used to provide tension in industrial assemblies, such as counterbalances, door returns, and mechanical linkages. The music wire construction and oil finish suit general-purpose applications across machining, material handling, and automation equipment.
What are the specifications of the SPEC extension spring MH04200371500M?
This SPEC extension spring has a 0.037 in wire diameter, 0.42 in O.D., 1 1/2 in free length, and an oil finish. It is supplied as a 5-pack with machine hook ends, part number MH04200371500M, SKU 3G-OTH-681337.
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 MH04200371500M to support your maintenance and production needs across 14 departments.
How to select the right extension spring for an application?
Select an extension spring by matching wire diameter, outside diameter, free length, and end type to your load and travel requirements. For the SPEC MH04200371500M, the 0.037 in wire and 0.42 in O.D. suit light to medium tension. Always verify hook style and finish compatibility with 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.
