Alloy 400 Fasteners

We have partnered with a company with very deep inventory of Alloy 400 fasteners so that we can quickly respond to inquiries for hex bolts, hex nuts and washers. Lock washers that go with Alloy 400 Bolting are made from Alloy 500. Nickel Systems also stocks certain sizes of socket cap screws and machine screws in Alloy 400, which are used by repeat customers.

Monel® was created by the International Nickel Company and patented in 1906. The patent has expired and it is available from a variety of sources. Alloy 400 is versatile and is used to resist both acids and alkalis. Seawater applications are common. A variant is Alloy 405 (UNS N04405). It contains slightly more sulfur, which improves machinability.


Monel 400 (® Special Metals Corporation)
ATI 400 (® Allegheny Technologies Incorporated)
Langalloy 400 (® Langley Alloys Inc.)
Nickelvac 400 (® Allegheny Technologies Incorporated)
Nicorros Alloy 400 (® ThyssenKrupp VDM)
Silverin 400 (® Deutsche Nickel)

Primary Resistance



ASTM B127, ASME SB127 (Plate)
ASTM B564, ASME SB564 (Rod)
UNS N04400
W-Nr 2.4360

Typical Tensile Strength (at room temperature in KSI)


Typical Chemistry (% by weight)

C .15, Cu 31, Fe 2, Mn 1, Ni 66.5, S .01, Si .25

Technical Data Sheet