Cold Heading Wire
Stainless steel is most suitable material to make Bolt, Nut, Tapping screw, machine screw and wood screw etc. In order to eliminate troubles particularly in cold-heading process and to have good shaped thread, cold-heading wire is manufactured under the most adequate condition with the material of best quality.
Type of steel & screw(bolt) shapes
AISI
|
SUS | Cold heading
|
Screw Shapes |
304
316 |
304
316 |
Light processing
|
Hexagon & square headed, slotted, round, raised T-head, pan head, counter-sunk screws, bolts & nuts
|
302HQ
(305) |
XM7
305J1 |
High-power processing
|
Slotted & cross-recessed head tapping, pan, round, binding truss & oval screws, bolts & nuts
|
384
|
384
|
Heavy processing
|
Cross-recessed head tapping, truss & binding screw & nuts
|
410
430 434 |
410
430 434 |
Heavy processing
|
Bolts, wood screw, nut, rivets & cross-recessed head screws, tapping screw
|
Mechanical properties
|
Type
|
Class A
|
Class B | |||||
|
Tensile Strength
|
Reduction of Area
(min, %) |
Tensile Strength
|
Reduction of Area
(min, %) |
||||
AISI
|
SUS
|
Over dia. 1.6mm to 5.5mm
|
Dia. 0.8mm to 1.6mm
|
Over dia. 1.6mm to 5.5mm
|
Dia. 0.8mm to 1.6mm
|
||
302HQ
|
XM7
|
441-588
|
490-637
|
70
|
461-637
|
539-686
|
65
|
305
|
305J1
|
490-637
|
510-657
|
70
|
510-686
|
559-706
|
65
|
304
|
304
|
539-686
|
588-735
|
70
|
559-706
|
637-785
|
65
|
384
|
384
|
441-588
|
490-637
|
70
|
461-637
|
539-686
|
65
|
316
|
316
|
510-657
|
559-706
|
70
|
539-686
|
58-755
|
65
|
410
|
410
|
-
|
-
|
-
|
461-637
|
539-735
|
65
|
430
|
430
|
-
|
-
|
-
|
461-608
|
539-735
|
65
|
434
|
434
|
-
|
-
|
-
|
461-637
|
539-735
|
65
|
