• Transport Package：Blister Packing
• Trademark：FDS
• Origin：China
• HS Code：902690000
• Production Capacity：80, 000, 000 PCS Per Year

Basic Info.

Transport Package Blister Packing Trademark FDS Origin China HS Code 902690000 Production Capacity 80, 000, 000 PCS Per Year

Product Description

Hair spring introduction
Hairspring or called balance spring, is to use common metal wire, through repeated rolling process to flat spring, then by coiling, heat treatment (hardening) process etc, come into being the hairspring, which is widely being used in the dashboard & various gauges field as the core part of precision & smooth indication.  

Application:

• Pressure and temperature gauges
• Automotive speedometers and tachometers
• Variety of electrical indication     
• Aircraft speed and altitude gauges
• Watches, clocks
• Other measuring instruments

Material:

• Stainless steel
• Phosphur bronze
• Beryllium copper
• NiSpan C
• Iron steel

Process introduction