SPEC Extension Spring: Music Wire, 21.6 mm Free Lg, 0.7 mm Wire Dia, 3.5 mm O.D.
The SPEC Extension Spring is a music wire machine hook extension spring, supplied as a 2 PK with a 21.6 mm free length, 0.7 mm wire diameter, and 3.5 mm O.D. (MPN HM0350700022M). It features an oil finish.
SKU 3G-OTH-680886
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.
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Product Description
The SPEC Extension Spring is a music wire machine hook extension spring, supplied as a 2 PK with a 21.6 mm free length, 0.7 mm wire diameter, and 3.5 mm O.D. (MPN HM0350700022M). It features 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 pulling force in industrial assemblies, such as counterbalances, garage doors, and agricultural equipment. The 21.6 mm free length and 0.7 mm wire diameter suit light to medium tension applications.
What are the specifications of the SPEC extension spring HM0350700022M?
This SPEC extension spring has a 21.6 mm free length, 0.7 mm wire diameter, 3.5 mm O.D., and an oil finish. It is supplied as a 2-pack with machine hook ends. The manufacturer part number is HM0350700022M.
Where to buy SPEC extension springs worldwide?
3G Electric supplies SPEC extension springs worldwide, handling full logistics and customs clearance. We source genuine industrial components across 14 departments, including springs, and deliver to global destinations. Contact us for availability and lead time.
How to select the right extension spring for an application?
To select the right extension spring, match free length, wire diameter, and O.D. to your required load and deflection. The SPEC HM0350700022M offers a 21.6 mm free length and 0.7 mm wire diameter. Always verify hook type and finish, such as the oil finish on this model.
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.
