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

SPEC Extension Spring: Music Wire, 1 3/4 in Free Lg, 0.037 in Wire Dia, 0.42 in O.D. - Machine Hook Extension Springs
SPECMachine Hook Extension Springs

SPEC Extension Spring: Music Wire, 1 3/4 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 3G-OTH-679264, MPN MH04200371750M). It features a 1 3/4 in free length, 0.037 in wire diameter, 0.42 in O.D…

SKU 3G-OTH-679264

Brand
SPEC
Item
Extension Spring: Music Wire, 1 3/4 in Free Lg, 0.037 in Wire Dia, 0.42 in O.D.
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 — 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

SPEC
Manufacturer Part Number
MH04200371750M
Type
5 PK
O.D.
0.42 in
Finish
Oil
Free Lg
1 3/4 in
Wire Dia
0.037 in

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 machine hook extension spring made of music wire, supplied in a 5-pack (SKU 3G-OTH-679264, MPN MH04200371750M). It features a 1 3/4 in free length, 0.037 in wire diameter, 0.42 in O.D., and an oil finish.

Frequently Asked Questions

What is a SPEC extension spring used for?

A SPEC extension spring is used to provide pulling force in mechanical assemblies, such as garage doors, trampolines, and industrial machinery. This music wire spring with machine hooks is designed for applications requiring consistent tension and durability.

What are the specifications of the SPEC extension spring MH04200371750M?

This SPEC extension spring has a free length of 1 3/4 in, wire diameter of 0.037 in, and outer diameter of 0.42 in. It is made of music wire with an oil finish and comes in a 5-pack. The manufacturer part number is MH04200371750M.

Where to buy SPEC extension springs worldwide?

3G Electric supplies SPEC extension springs worldwide, handling logistics, customs, and delivery to your location. As a global industrial solutions provider, we source genuine parts like the MH04200371750M 5-pack and support procurement across 14 departments.

How to select the right extension spring for an application?

To select the right extension spring, match free length, wire diameter, and outer diameter to your assembly's space and load requirements. Consider material—music wire offers high tensile strength—and finish like oil for corrosion resistance. Consult a technical specialist for precise sizing.

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: Music Wire, 4 1/2 in Free Lg, 0.034 in Wire Dia, 0.36 in O.D., 5 PK (MPN MH03600344500M)
SPEC
Extension Spring: Music Wire, 4 1/2 in Free Lg, 0.034 in Wire Dia, 0.36 in O.D., 5 PK (MPN MH03600344500M)
Extension Spring: 302 Stainless Steel, 2 in Free Lg, 0.039 in Wire Dia, 0.36 in O.D., 5 PK (MPN H03600392000S)
SPEC
Extension Spring: 302 Stainless Steel, 2 in Free Lg, 0.039 in Wire Dia, 0.36 in O.D., 5 PK (MPN H03600392000S)
Extension Spring: 302 Stainless Steel, 6 in Free Lg, 0.207 in Wire Dia, 1.75 in O.D. (MPN H17502076000S)
SPEC
Extension Spring: 302 Stainless Steel, 6 in Free Lg, 0.207 in Wire Dia, 1.75 in O.D. (MPN H17502076000S)
Extension Spring: Music Wire, 41 mm Free Lg, 1.2 mm Wire Dia, 8.5 mm O.D., 2 PK (MPN HM0851200041M)
SPEC
Extension Spring: Music Wire, 41 mm Free Lg, 1.2 mm Wire Dia, 8.5 mm O.D., 2 PK (MPN HM0851200041M)
Extension Spring: Music Wire, 34.8 mm Free Lg, 2.2 mm Wire Dia, 11 mm O.D. (MPN HM1102200035M)
SPEC
Extension Spring: Music Wire, 34.8 mm Free Lg, 2.2 mm Wire Dia, 11 mm O.D. (MPN HM1102200035M)
Extension Spring: 302 Stainless Steel, 5 1/2 in Free Lg, 0.058 in Wire Dia, 0.36 in O.D., 3 PK (MPN H03600585500S)
SPEC
Extension Spring: 302 Stainless Steel, 5 1/2 in Free Lg, 0.058 in Wire Dia, 0.36 in O.D., 3 PK (MPN H03600585500S)
Extension Spring: Music Wire, 3 1/2 in Free Lg, 0.063 in Wire Dia, 0.85 in O.D., 3 PK (MPN MH08500633500M)
SPEC
Extension Spring: Music Wire, 3 1/2 in Free Lg, 0.063 in Wire Dia, 0.85 in O.D., 3 PK (MPN MH08500633500M)
Extension Spring: Music Wire, 1/4 in Free Lg, 0.007 in Wire Dia, 0.063 in O.D., 5 PK (MPN MH00630070250M)
SPEC
Extension Spring: Music Wire, 1/4 in Free Lg, 0.007 in Wire Dia, 0.063 in O.D., 5 PK (MPN MH00630070250M)