ASTM A453 Grade 660 Countersunk Screws
Boltport offers ASTM A453 Grade 660 Countersunk Screws in Class A, B, C & D, manufactured to DIN 7991, ISO 10642, ASME B18.3, B18.3.1M & UNI 5933 standards, in metric and inch sizes with UNC, UN, UNF, UNEF, ISO, BSW & BSF threads. Grade 660 countersunk screws are available with full thread; part threads and custom thread design.
|ASTM A453 Grade 660 Countersunk Screws
Countersunk Screw Sizes & Thread Specifications
||M6 to M152
||¼" to 8"
||ASME, BSW, BSF
||ISO 68-1, ISO 268, ISO 724, ASME B1.1, ASME B1.13M, BS 84, BS 3643
Countersunk Screw Standards