Quality Assurance
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Door Handle
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Lock Body
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Pull Handle and Hinge
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Concealed Hinge and Slide
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Inspection Procedure
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Inspection Methods
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LOCK BODY QUALITY STANDARD

IN ACCORDANCE WITH NATIONAL STANDARD 2B/T2473-2000

Item

Unit

Quantity

Key interchangeability

%

Max. 0.024

Lock Tongue
Lateral Pressure

Newton

Min. 1,470

Usability

Times

50,000-70,000

Pressure when pulling key

Newton

Max. 6.4

Handle Tongue
Lateral Pressure

Newton

Min. 980

Handle Tongue
Neck Pressure

Newton

2.9-9.8

Handle Tongue
Pressure necessary in order to push it in

Newton

Max. 49

Lock Tongue
Pressure necessary in order
to push it in

Newton

Min. 882

Dimensional standard:

Item

Unit

Quantity

Lock plate - strike plate distance

mm

Max. 0.4

Lock drum - lock drum hole distance

mm

Max. 0.5

Handle and lock tongue's protuberance with regards to the lock plate (when retracted)

mm

Max. 0.5

Lateral and inferior protection lids' protuberance with regards to the lock body frame

mm

Max. 0.4

Handle tongue's protuberance with regards to the lock plate (when not retracted)

mm

Min. 11

Screw's protuberance with regards to the lock plate

mm

Max. 0.3

Lock plate's flatness

mm

+/- 0.2

Holes in straight line

mm

+/- 0.2

Plating hardness

H

3