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The Marine sector is a diverse market covering the needs of the private individual Yachting enthusiast and their chandlery, local dry docks, both traditional and innovative renewable wave technology and mainstream commercial shipyards. The demands of commercial ship building and ports involve high volume economically priced corrosion resistant fasteners with guaranteed delivery with technical support. Renewable wave engineering is predominantly low volume and requires rapid manufacturing of bespoke components following some material selection and fastener consultation. Yachting enthusiasts and outfitters require a tailored service, excellent workmanship and usually some detailed advice on material selection and fastener design prior to placing an order.

BNM manufacture bolts, nuts and screws using these materials – Hastelloy, Nimonic, Nitronic and Hiduron.

Typical fasteners (marine):
First Level Fasteners
Hexagon bolt, Setscrew & Slotted screw
Studbolt, Stud, Engineer’s stud & Necked stud
Machine screw & mushroom head screw
Pan head screw & adjustment screw
Bi-hexagon / 12 point bolt and nut
Socket head Capscrew & U bolt
Hexagon nut, Thin nut & Lock nuts
Full nut, Heavy series nut & Lid retaining nut
Slotted nut & Castle nut
All metal Prevailing torque nut & nylon insert nut
Round nut, capnut, & wingnut
Washer & Spacer
Pin, Split pin, Taper pin, Spring pin and Plug
Eyebolt & Swing bolt

Typical Size Range:
M4 – M100

Maximum Capacity:
12” x 750mm Long
75mm Dia Bar Feed

Typical machined components (marine):
Valve body, T joint, cylinder & Pillar
Valve stem, Piston, Valve spindle & Probe
Valve, Actuator, Lever, Handwheel & Lid
Spring cap & Spring support
Spacer, Spacer plate, Seat, Sleeve & Shim
Bush, Boss, Coupling, Connector, Gland & Key
Flange, Clamp plate, Split ring & Grating.

Typical Coatings: (flow control)
Teflon / PTFE / Xylan
Cadmium / Silver / Gold
Hot Dipped Galvanising
Zinc / Copper
Chromate Passivation
Zinc-Nickel / Zinc-Cobalt

Typical Coatings:
Teflon / PTFE / Xylan
Cadmium / Silver / Gold
Hot Dipped Galvanising
Zinc / Copper
Chromate Passivation
Zinc-Nickel / Zinc-Cobalt

Other Services:
Upset Forging
Heat treatment
Thread Rolling

Typical Testing Services:
Chemical Analysis & PMI Testing
Mechanical Properties
Proof Load
Magnetic Particle MPI
Dye Penetrant DPI
Hot Forging
Mechanical Testing

Typical Standards:
NACE MR-01-75
PED 97/23/EC
Norsok MDS M630
NDT 02/05
DEF-STAN 02-729, 02-780, 02-791
DEF-STAN 02-862, 02-833, 02-838
DEF-STAN 07-261
Non-disclosure agreement

Typical materials (marine)

Carbon, alloy & high tensile steels:
Grades 8.8 10.9 12.9
High Tensile Steel
Durehete 900 / 950 / 1055
A193: B7 / B7M
A194: Gr 4 / 7 / 2H / 2HM
A320: L7 / L7A
ISO 898-1 8.8
ASTM A320 L7 / L7M
ASTM A194 7(S3) / 7M(S3)
Hot Dip Galvanised
Sheradized Zinc Coating
PTFE / Xylan Coating
Def-Stan 02-862 / NES 862 SM1 / SM2

Stainless steels:
304 / 316 / A2 / A4
17-4 PH / 17-7 PH
A193: B8M / B8MCL2
A194: Gr. 8 / Gr. 8MA
ASTM A453 660
Alloy 20 /Carpenter20
Duplex (S31803)
Super Duplex (S32760)
UNS S31803
UNS S32750
UNS S32760
ISO3506-1 A2-70
ISO3506-1 A2-80
ASTM A193 B8M Class 2
ASTM A194 8M

Non-ferrous alloys:
Nickel Aluminium Bronze
Def-Stan 02-862 / NES 862 SM3

Phosphur Bronze
Manganese Bronze
Hiduron 191
Hiduron 130
NES 835 / Def-Stan 02-835
Monel 400 / BS3076 NA13
Monel K500 / BS3076 NA18
Inconel 718

Nickel alloys:
Monel 400 (NA13)

Cupro-Nickel alloys:
Monel K500 (NA18)

Brass & Bronzes:
Aluminium Bronze
Phosphor Bronze
Aluminium Silicon Bronze
Nickel Aluminium Bronze

Aluminium, Zirconium, Titanium