Astra spring (S-003).

To suit 60 mm backset brass body mortice locks.

• 130 series (used as a bolt spring)
• 330 series (used as a bolt spring and/or a lever follower spring)
• 430 series (used as a bolt spring and/or a lever follower spring)
• 630 series (used as a bolt spring and/or a lever follower spring)
• 730 series (used as a bolt spring and/or a lever follower spring)
• 830 series (used as a bolt spring and/or a lever follower spring)
• 930 series (used as a lever follower spring)