PennEngineering
PennEngineering
Corporate Headquarters – Danboro, PA
5190 Old Easton Rd.
Danboro, PA 18916
Phone: 215-766-8853
Toll-Free Phone: 1-800-237-4736 (U.S. only)
Email: info@pemnet.com
Website: www.pemnet.com
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HSL springs are engineered to provide a reliable and repeatable spring rate when assembled with mating PEM hardware. The spring rate is critical to the successful assembly of your heat sink.

Clamp load will be determined by the spring rate and deflection that is designed into the joint.
HSL™ Spring
HSL™ Spring_02
Unit of Measure
1 

Part #

Thread Size Fit

Minimum Inside Dia.

Load at Working Height ± 10%

Working Height Ref.

Spring Rate

Material

HSL-574-35 N/A #4-40 M3 N/A .226 in5.74 mm N/A 7.87 lb35 N N/A .270 in6.86 mm N/A 74 lb/in12.96 N/mm N/A 17-7 Stainless Steel
HSL-701-35 N/A #6-32 N/A .276 in7.01 mm N/A 7.87 lb35 N N/A .270 in6.86 mm N/A 39 lb/in6.84 N/mm N/A 17-7 Stainless Steel
Unit of Measure
1