Spring Manufacturing Corporation

	Specification Form
You can also download a PDF version of the Compression Spring Specification Form below:
PDF Form
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Extension Springs

Extension Springs — Specification Form

The following form will send us your engineering information. Please try and be as complete as possible. If you have any questions, please feel free to call us at 978.658.7396 or visit our contact page.

Contact Information:
Your Name	(first and last)
Address
City
State	(two characters only)
Zip	(zip + 4)
Country
Phone	e.g. 978-658-7396
Fax	e.g. 978-658-7396
Email Address

Design Information:

1. outside diameter
a.	in. (mm) max. or
b.	in. (mm) max. or ± in. (mm)
2. inside diameter
a.	in. (mm) max. or
b.	in. (mm) max. or ± in. (mm)
3. loads	load lb. (N) ± lb. (N) @ in. (mm)
	load lb. (N) ± lb. (N) @ in. (mm)
	rate lb/in. (N/mm) ± lb/in. (N/mm)
	between lengths of in. (mm) and in. (mm)
4. max. extended length	(inside ends) without set in. (mm)
5. relative loop position	° max. separation of loop planes
6. direction of helix	(indicate L, R or OPT)
6. type of ends	(see illustrations below)


Advisory Data
1. length inside ends
a.	in. (mm) max. in. (mm) min.
b.	in. (mm) max. ± in. (mm)
c.	approximately in. (mm)
2. wire diameter	in. (mm)
3. mean coil diameter	in. (mm)
4. no. of active coils
5.body length	in. (mm)
6. initial tension	lbs. (N)

Special Information
1. type of material
2. finish
3. squareness (free)	within ° degrees
4. frequency of extension	cycles/sec. and working range in. (mm)
	to in. (mm) of length
5. operating temperature	° F (°C)
6. end use or application
7. other comments
	indicates required information

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