Nickel 201 Socket Cap Screws Specification

Nickel 201 Equivalent Designation
| UNS Designation | British STD | Werkstoff No. | European STD | Swedish STD | Japanese STD |
|---|---|---|---|---|---|
| N02201 | – | 2.4068 | – | – | – |
Nickel 201 Socket Cap screws are externally threaded fasteners typically driven into a tapped hole or self-tapped material. TorqBolt manufactures Nickel 201 Socket Cap screws per ASME B18.3 (socket products), ASME B18.6.3 (machine screws), DIN 912 / 7991 / 6912, and ISO 4762 / 10642, in metric M3–M48 and imperial 0–1/2".
Nickel 201 Socket Cap screws are available in cap (cylindrical), button (low-profile dome), countersunk / flat (82° or 90°), pan, fillister, truss, and shoulder configurations. Countersunk per DIN 7991 with 90° head angle is standard for metric; 82° per ASME B18.6.3 for imperial.
Nickel 201 Socket Cap screws use full-thread or partial-thread (length-under-head) configurations. Machine screws are typically full-thread; cap screws use partial thread for grip control. Threading per ASME B1.1 (UNC/UNF) or ISO 965 (metric coarse/fine), Class 2A or 6g default. Length-under-head is measured from the bearing surface for hex/cap, from the largest face for countersunk. Custom lengths quoted to drawing.
TorqBolt produces Nickel 201 Socket Cap set screws (cup-point, cone-point, dog-point, flat-point, hex-socket DIN 913/914/915/916), shoulder screws (precision-ground shoulder for pivot applications), and self-tapping screws (Type AB, Type 25). All certified per EN 10204 3.1 / 3.2 with optional NACE MR0175 sour-service compliance.
Commercially-pure nickel grades (UNS N02200, N02201) are used where the application demands maximum nickel chemistry purity: electrical conductivity, magnetostriction, hot-caustic resistance, or food / pharmaceutical contact. Pure nickel is non-magnetic above its Curie point, weldable without filler in thin sections, and resistant to dry chlorine, fluorine, and hot caustic solutions where stainless steels fail.
Nickel 200 (N02200, >99% Ni, max 0.15% C) is the general-purpose grade for chemical-process and electroplating equipment. Nickel 201 (N02201, max 0.02% C) is the low-carbon variant required for service above 315°C to prevent graphitization that would destroy mechanical properties. Nickel 205 is the magnetic-grade variant. Nickel 270 (N02270) is high-purity electronics grade.
Pure nickel fasteners are supplied per ASTM B160 (rod/bar) and AMS 4730 with EN 10204 3.1 / 3.2 certificates including chemistry, hardness (HV 100-160 annealed, up to 250 cold-worked), and tensile testing. NACE MR0175 sour-service is qualified in the annealed condition. Welding uses pure-nickel filler (ENi-1) with copper-oxide-free flux to prevent weld embrittlement.