Hexagon Bolts
- ANSI B18.2.1
- ANSI B18.2.3.1M
- DIN 931
- DIN 933
- BS 1768
- UNI 5731
- UNI 5737
- UNI 5739
- ISO 4014
- ISO 4017
- BS 1769
- BS 3692

Alloy 904l has a designated UNS NO called 8904, which is generally referred to as 904l. Being a low carbon high nickel alloy austenitic stainless steel it is more corrosion resistant as compared to AISI 316 & AISI 317L including AISI 321 & 347.Since ALLOY 904L has high levels of molybdenum and nickel along with chromium, it is the most preferred alloy among austenitic stainless steel group. UNS 8904 fasteners also knows as alloy 904l fasteners are highly resistant to hydrochloride acids. Especially ALLOY 904L Bolts have a tendency to withstand these chloride solutions without any adverse effect on Alloy 904l Nuts and alloy 904l washers due to addition of copper. Alloy 904l Bolts and nuts included with washers are crevice and stress corrosion cracking resistant. Alloy 904l Used in cryogenic applications is found most successful to its low temperature sustaining capabilities with optimum toughness. Alloy 904l Bolts Nuts and washers are non magnetic in nature. 904l has high chromium content, which enables forming of a passive film to protect the surface from corrosion and crevice cracking. Fasteners in Alloy 904l are both hot formed and cold formed. Generally Alloy 904l bolts are cold formed in huge quantities along with alloy 904l nuts. Alloy 904L fasteners have a greater resistance to precipitation of ferrite and Sigma phases on cooling and welding than other stainless steels Containing molybdenum such as 316L and 317L.least risk factor of intercrystalline corrosion on cooling or welding due to the low carbon content is achieved in 904l fasteners like hex bolts nuts washers It maximum service temperature is at 450°C. .
| Equivalent Designation | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ASTM/ASME | AISI | UNS | British Standard | Werkstoff No. | En Name | Swedish(SS) | JIS(SUS) | ||
| – | 904L | N08904 | URANUS B6 | 1.4539 | X1NiCrMoCu25205 | 2562 | QS 2025 MC | ||
Cold Forged Fasteners, Hot Forged Fastener, C-Machined Components / Fasteners, CNC Machined Components / Fasteners, Custom Machined Components / Fasteners, Threaded Components / Fasteners, Non-Threaded Components / Fasteners, Bar Stock Machined Components / Fasteners.Metric Range from M1.0 to M100 and Imperial Range from 1/16 inch to 4 inch.Coarse, Fine, UNC, UNF, UN, BSW, Acme Threads with Half Thread, Full Thread & Double End Thread Configuration.