Large-diameter nuts in machining
    Nickel-molybdenum-chromium alloy

    Alloy C-276 Heavy Hex Nuts

    Alloy C-276 heavy hex nuts (UNS N10276) for severe sour gas, acid and chloride service, quoted buy-to-order with full traceability.

    SUPPLY

    Buy-to-order

    LEAD TIME

    Quoted per RFQ

    RECORDS

    EN 10204 3.1 / 3.2

    GRADE OVERVIEW

    Alloy C-276 nuts, specified correctly.

    C-276 is a nickel-molybdenum-chromium alloy with strong resistance to pitting, crevice corrosion and many aggressive chemicals.

    Specify bar standard, heat treatment, PMI and certification. C-276 is often quoted with matched studs for complete corrosion-resistant joints.

    GRADE
    ASTM B574 or project specification
    SIZES
    1/4"–6" · M5–M150
    FORM
    Heavy hex, to ASME B18.2.2 or your drawing

    Reference information only. Your specification and the supplied certificates govern; no stock or equivalence is implied.

    Nickel alloy heavy hex nuts packed for dispatch
    Photo shows nut form and finish; it does not identify the grade.
    WHERE IT IS SPECIFIED

    Typical applications

    01

    Sour gas

    Severe H₂S and chloride environments.

    02

    Chemical

    Acid and chlorine processing.

    03

    Flue gas

    Scrubber and FGD equipment.

    Nickel alloy heavy hex nuts packed for dispatch
    Large-diameter nuts in machining
    Nickel alloy heavy hex nuts packed for dispatch
    WHAT TO PUT ON YOUR RFQ

    Quoted right the first time.

    Size & thread

    Nominal size from 1/4" to 6" or M5 to M150, thread pitch (UNC/8UN or metric) and quantity per line.

    Matching studs & coating

    Pair with Alloy C-276 stud bolts; state coating such as zinc, HDG or Xylan/PTFE and any oversize tapping.

    Records & testing

    EN 10204 3.1 or 3.2, hardness, proof load, PMI or impact testing as your specification requires.

    QUESTIONS

    Alloy C-276 FAQs

    REQUEST A QUOTE

    Send your Alloy C-276 nut requirement.

    Send sizes, quantities, matched studs, coating, certificates and required date, or attach a line list or drawing. EMG confirms sourcing, records and lead time against your RFQ.

    ISO 9001:2015 quality-managed supply