GlobalFastener
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Guangdong STL Fastening System Co., Ltd.
广东史特牢紧扣系统有限公司
Premium Supplier
15 Years
Main Products
Lock washers
Disc washers
Spring washers
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(QJ 3247.1 - 2005)
material
Spring Steel
grade, rigidity
Grade 12.9 (HRC39~44)
Coating
Black phosphide
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Similar Products
GB /T 955 - 1987
DIN 137 (B) - 1994
DIN 6904 - 1990
DIN 137 (A) - 1987
DIN 137 (B) - 1987
Q 416
CNS 4406 - 1979
YJT 6002
QC /T 363 - 1999
