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 - Machine Hook Extension Springs
SPECMachine Hook Extension Springs

SPEC Extension Spring

The SPEC Extension Spring is a music-wire machine hook extension spring supplied in a 5-pack (MPN MH00940120750M). It features a 0.012 in wire diameter, 0.094 in O.D., 3/4 in free length, and an oil finish.

SKU 3G-OTH-679102

Brand
SPEC
Item
Extension Spring
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
MH00940120750M
Type
5 PK
O.D.
0.094 in
Finish
Oil
Free Lg
3/4 in
Wire Dia
0.012 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 music-wire machine hook extension spring supplied in a 5-pack (MPN MH00940120750M). It features a 0.012 in wire diameter, 0.094 in O.D., 3/4 in free length, 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 counterbalancing, latch return, or tensioning in industrial equipment. This music-wire machine hook spring (0.012 in wire dia, 3/4 in free length) is common in light-duty applications across machining, material handling, and instrumentation.

What are the specifications of the SPEC extension spring MH00940120750M?

The SPEC extension spring MH00940120750M has a 0.012 in wire diameter, 0.094 in O.D., 3/4 in free length, and an oil finish. It is a music-wire machine hook spring supplied in a 5-pack. These dimensions suit light tension applications in industrial machinery and equipment.

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 genuine parts like the MH00940120750M 5-pack across 14 departments. Contact us for availability and delivery to your location.

How to select the right extension spring for an application?

To select the right extension spring, match wire diameter, outside diameter, free length, and material to your load and deflection requirements. For light tension, a music-wire spring like the SPEC MH00940120750M (0.012 in wire, 3/4 in free length) works well. 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Machine hook extension spring made of music wire with an oil finish. Free length 7/8 in, wire diameter 0.013 in, outer diameter 0.094 in. Supplied in a 5-pack. Used to provide tension in mechanical assemblies such as industrial equipment, conveyors, and automation systems
SPEC
Machine hook extension spring made of music wire with an oil finish. Free length 7/8 in, wire diameter 0.013 in, outer diameter 0.094 in. Supplied in a 5-pack. Used to provide tension in mechanical assemblies such as industrial equipment, conveyors, and automation systems
This extension spring features machine hooks for tension applications in industrial machinery, automation, and material handling equipment. Constructed from music wire with an oil finish, it has a 0.008 in wire diameter, 0.063 in outer diameter, and 1/4 in free length. Supplied in a 5-pack
SPEC
This extension spring features machine hooks for tension applications in industrial machinery, automation, and material handling equipment. Constructed from music wire with an oil finish, it has a 0.008 in wire diameter, 0.063 in outer diameter, and 1/4 in free length. Supplied in a 5-pack
Music wire extension spring with machine hooks. Free length 1 in, wire diameter 0.037 in, outer diameter 0.24 in. Oil finish. Used to apply a pulling force between two components in machinery such as conveyors and packaging equipment
SPEC
Music wire extension spring with machine hooks. Free length 1 in, wire diameter 0.037 in, outer diameter 0.24 in. Oil finish. Used to apply a pulling force between two components in machinery such as conveyors and packaging equipment
Music wire extension spring with machine hooks. Free length 2 in, wire diameter 0.045 in, outer diameter 0.42 in. Oil finish. Suitable for applications requiring a pulling or tension force, such as in mechanical assemblies and industrial equipment
SPEC
Music wire extension spring with machine hooks. Free length 2 in, wire diameter 0.045 in, outer diameter 0.42 in. Oil finish. Suitable for applications requiring a pulling or tension force, such as in mechanical assemblies and industrial equipment
This extension spring features machine hooks for tension applications in mechanical assemblies. Made from music wire with an oil finish, it has a 0.031 in wire diameter, 0.18 in outer diameter, and 3/4 in free length. Supplied in a 5-pack
SPEC
This extension spring features machine hooks for tension applications in mechanical assemblies. Made from music wire with an oil finish, it has a 0.031 in wire diameter, 0.18 in outer diameter, and 3/4 in free length. Supplied in a 5-pack
Machine hook extension spring made from music wire with an oil finish. Free length of 4 inches, wire diameter of 0.049 inches, and outer diameter of 0.36 inches. Sold in a 5-pack. Used to provide pulling force in assemblies such as counterbalances and tension mechanisms
SPEC
Machine hook extension spring made from music wire with an oil finish. Free length of 4 inches, wire diameter of 0.049 inches, and outer diameter of 0.36 inches. Sold in a 5-pack. Used to provide pulling force in assemblies such as counterbalances and tension mechanisms

More from SPEC

View all SPEC parts
This extension spring features machine hooks on both ends for secure attachment. With a free length of 109 mm, wire diameter of 5 mm, and outer diameter of 25 mm, it provides resistance to pulling forces. Suitable for applications requiring controlled return motion, such as in industrial machinery and material handling equipment
SPEC
This extension spring features machine hooks on both ends for secure attachment. With a free length of 109 mm, wire diameter of 5 mm, and outer diameter of 25 mm, it provides resistance to pulling forces. Suitable for applications requiring controlled return motion, such as in industrial machinery and material handling equipment
This extension spring features machine hooks for attachment in tension applications. With a free length of 2 1/2 in, wire diameter of 0.045 in, and outer diameter of 0.42 in, it provides return force in assemblies such as valves, clutches, and conveyor systems. The plain finish is suitable for general industrial use
SPEC
This extension spring features machine hooks for attachment in tension applications. With a free length of 2 1/2 in, wire diameter of 0.045 in, and outer diameter of 0.42 in, it provides return force in assemblies such as valves, clutches, and conveyor systems. The plain finish is suitable for general industrial use
Machine hook extension spring with 0.5 in outer diameter, 2 1/2 in free length, and 0.041 in wire diameter. Plain finish. Supplied in a pack of 3. Used to provide pulling force in mechanical assemblies such as material handling and packaging equipment
SPEC
Machine hook extension spring with 0.5 in outer diameter, 2 1/2 in free length, and 0.041 in wire diameter. Plain finish. Supplied in a pack of 3. Used to provide pulling force in mechanical assemblies such as material handling and packaging equipment
Machine hook extension spring made of 302 stainless steel with plain finish. Free length 1-1/2 in, wire diameter 0.034 in, outer diameter 0.5 in. Supplied as a 3-pack. Used to provide tension in machinery, pulling components together or returning them to a starting position
SPEC
Machine hook extension spring made of 302 stainless steel with plain finish. Free length 1-1/2 in, wire diameter 0.034 in, outer diameter 0.5 in. Supplied as a 3-pack. Used to provide tension in machinery, pulling components together or returning them to a starting position
Music wire extension spring with machine hooks, designed to store and release energy under tension. Used in industrial machinery, automotive assemblies, and mechanical systems requiring return force, such as latches, counterbalances, and tension mechanisms. Supplied as a 2-pack with oil finish
SPEC
Music wire extension spring with machine hooks, designed to store and release energy under tension. Used in industrial machinery, automotive assemblies, and mechanical systems requiring return force, such as latches, counterbalances, and tension mechanisms. Supplied as a 2-pack with oil finish
This extension spring features machine hook ends for secure attachment in tension applications. Constructed from music wire with an oil finish, it provides consistent pulling force for returning components to their original position. Typical uses include industrial machinery, conveyors, and automation systems
SPEC
This extension spring features machine hook ends for secure attachment in tension applications. Constructed from music wire with an oil finish, it provides consistent pulling force for returning components to their original position. Typical uses include industrial machinery, conveyors, and automation systems
This extension spring is made of 302 stainless steel with a plain finish. It has a 0.75 in outer diameter, 3 in free length, and 0.105 in wire diameter. The machine hooks allow secure attachment in applications requiring pulling force, such as in industrial machinery and automation systems
SPEC
This extension spring is made of 302 stainless steel with a plain finish. It has a 0.75 in outer diameter, 3 in free length, and 0.105 in wire diameter. The machine hooks allow secure attachment in applications requiring pulling force, such as in industrial machinery and automation systems
This extension spring stores energy and provides resistance to pulling forces. It is used in applications requiring controlled return motion or tension, such as industrial machinery and equipment. The spring has a free length of 3/4 in, wire diameter of 0.041 in, and outer diameter of 0.36 in, with a plain finish. Sold in a pack of 5
SPEC
This extension spring stores energy and provides resistance to pulling forces. It is used in applications requiring controlled return motion or tension, such as industrial machinery and equipment. The spring has a free length of 3/4 in, wire diameter of 0.041 in, and outer diameter of 0.36 in, with a plain finish. Sold in a pack of 5