FU NUO BOLTS ENTERPRISE CO., LTD. 

HEX BOLT:
DIN933 Thread
DIN931   
ISO4017 
INCH SIZE   M 4*8 ~M 48*400
cermet Stanless 304#,316#,316L#,410#,430#
Steel

NUT:
DIN934 HEX NUT
DIN6923 FLG HEX NUT
DIN1587 NYLON HEX NUT
DIN982 NYLON HEX NUT
Size   M2~M56 , INCH 1/8~2"
CermetStanless 304#,316#,316L#
Steel

SOCKET SCREW:
DIN 912 SOCKET CAP SCREW
DIN 7991 FLAT HEAD SOCKET CAP SCREW
ISO 7380 BUTTON HEAD SOCKET CAP SCREW
DIN916 SOCKET HEADLESS SET SCREW
Size M2*50~M48*500
Cermet
Stenless- 304#,316#,316L#Steel
DIN125 Flat Washer
DIN433 Flat Washer
DIN988 Flat Washer
DIN127 Spring Washer
DIN6797 Tooth Lock Washer
DIN436 Boxy Washer