Military & Marine fasteners & bolting.
Monel, nickel-aluminum bronze, Nitronic and duplex hardware for seawater and naval service.
Marine and defense applications demand corrosion resistance and documented traceability. We supply stainless, Monel, and super duplex fasteners — including tommy-bar nut systems for subsea make-up — with full material certification.
See where the bolts go.
Ship Propulsion Shaft Line
CP propeller blade bolts, hub to shaft flange bolts, strut bearing retainer screws, stern tube and shaft seal bolts, shaft coupling bolts, line shaft bearing bolts, thrust bearing foundation bolts, reduction gear holding-down bolts, gas turbine mount bolts, rudder coupling bolts, rudder carrier bearing bolts, steering gear foundation bolts, windlass foundation bolts and mast foundation bolts.
Offshore Crane
Slew bearing to pedestal and slew bearing to house studs and nuts, plus slew drive mounting bolts, hoist winch foot bolts, luffing winch foot bolts, cab mounting bolts, boom foot pins, A-frame pins and pin keeper plate bolts.
Shipboard Seawater System
Hull valve, pump casing, valve bonnet and overboard discharge studs and nuts, plus sea chest plate and anode bolting, strainer cover swing bolts, coupling bolts, pump foundation and motor bolts, pipe flange bolt-studs and nuts, butterfly valve operator bolts, U-bolts and hanger bolts, bulkhead penetration bolts, mooring bitt foundation bolts and hatch dog bolts and hinge pins.
LNG Loading Arm
Riser base flange, inlet flange, swivel flange, insulating flange, ERS flange and ERS valve body studs and nuts, plus pedestal anchor bolts, swivel bearing retainer bolts, counterweight bolts, pantograph pins and keeper bolts, hydraulic cylinder pins, release collar pins and QC/DC jaws, pins and clamp screws.
Aircraft Carrier
Hull valve flange studs and nuts, lock bar pins, hoist rope socket pins, sheave bearing cap and foundation bolts, guide rail bolts, pendant coupling pins, arresting gear sheave foundation bolts, arresting engine hold-down bolts, blast deflector hinge pins, deflector actuator mounting bolts, tie-down fitting bolts, hangar door track bolts, windlass foundation bolts, chain stopper pins and sea chest strainer plate bolts.
Submarine
Propeller cap, stern tube seal, ballast tank vent valve and sea-water hull valve studs and nuts, plus propeller nut, shaft coupling bolts and nuts, rudder and stern-plane coupling bolts, stock bearing housing bolts, sail-plane bearing and actuator bolts, hatch hinge and seal-ring bolting, deck casing panel bolts, sail fairing panel bolts, diesel generator mount bolts and propulsion motor mount bolts.
Grades military & marine runs on.
Monel 400 (UNS N04400)
The nickel-copper alloy that shrugs off seawater, brine and hydrofluoric acid — the classic marine and chemical fastener material, non-sparking and tough to cryogenic temperatures.
ASTM F468 / F467 fasteners · ASTM B865 barMonel K-500 (UNS N05500)
Monel 400 corrosion resistance with more than twice the strength — 130 ksi tensile, 90 ksi yield and 24 to 37 HRC — for pump shafts, subsea fasteners and oil-tool components.
ASTM F468 / F467 fasteners · ASTM B150 rod and barNickel-Aluminum Bronze C63000
Steel-like strength in a bronze — 100 to 130 ksi as a fastener — with seawater, cavitation and wear resistance for propellers, pumps, valve seats and subsea hardware.
ASTM A276 bar · ASTM A193 B8R boltsNitronic 50® Stainless Steel (UNS S20910, XM-19)
Nearly twice the yield strength of 316 with better corrosion resistance, non-magnetic even after cold work — the marine and sour-service austenitic for shafts, valves and high-strength bolting.
ASTM A276 bar · ASTM A193 B8S boltsNitronic 60® Stainless Steel (UNS S21800)
The anti-galling stainless: silicon and manganese give it a wear-resistant surface, so nuts and threads assemble dry without seizing — for valve stems, nuts and repeatedly assembled joints.
ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F51 / F60Duplex 2205 Stainless (UNS S31803 / S32205)
Twice the yield strength of 316 with far better chloride stress-corrosion resistance — the standard duplex for offshore, seawater and sour-service bolting.
ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F53Super Duplex 2507 Stainless (UNS S32750)
25 Cr super duplex with a PREN above 40 — 116 ksi tensile and 80 ksi yield for the most aggressive seawater, sour and chloride bolting.
ASTM A276 bar · ASTM F593 bolts316 Stainless Steel (UNS S31600)
The marine and chemical-plant stainless: 2 to 3 percent molybdenum for pitting and crevice resistance in chlorides, with the same strength tables as 304.
Jobs we’ve made in these grades.
