Monel 400 Eye-end / swing bolts
DIN 444ASTM B164
Monel 400 swing bolts combine a pivoting cover clamp with nickel–copper corrosion resistance in seawater and selected chemicals. Eye-to-pin fit and the nut-bearing arrangement define the closed connection and its maintenance travel.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Annealed
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Annealed; cold worked for higher strengthAnnealing restores ductility after working, while the specified amount of cold work sets higher-strength conditions without aging.
What we can make in Monel 400
Pivot eye
Use on hinged clamps and access covers that open frequently. The eye stays on a pivot pin so the bolt swings clear of the cover slot without removing the complete fastener.
Threaded clamp
The threaded leg sets the clamp opening and tightening travel. On a slotted cover, the nut or clamping handle needs a bearing face wide enough to bridge the slot.
Swing bolt vs lifting eye
Use a swing bolt to retain and tighten a cover; specify a rated lifting component for hoisting. The pivot eye dimensions alone do not establish an allowable lifting load.
- Interface
- Eye bore · Pivot pin
- Clamping
- Threaded shank · Nut
- Use
- Hinged covers · Fixtures
- Threads
- Metric · Inch
- Final condition
- Annealed · Cold worked
- Inspection
- Eye bore · Eye thickness · Pivot-to-end length · Threads
Manufacturing route
CNC machining suits samples and small lots. Cold heading or hot forging is selected for volume production according to alloy formability, head section and size.
Heat treatment & final condition
The final annealed or specified strengthened condition is linked to the lot; an aging treatment is not assumed for a solid-solution alloy.
Finished geometry
Head geometry, bearing face, shank and thread fit are checked after the final machining and thermal operations.
Where 400 fits — and what matters
Offshore & Marine
Seawater pump and cooling-system coversMonel 400 eye-end / swing bolts pivot into and out of the closures on seawater pump and cooling-system covers, allowing the clamp to release without removing the bolt from its hinge pin. The assembled contact is exposed to saltwater, deposits and neighbouring metals.
Water Treatment & Desalination
Filter housings and treatment-pump coversMonel 400 eye-end / swing bolts pivot into and out of the closures on filter housings and treatment-pump covers, allowing the clamp to release without removing the bolt from its hinge pin. The water stream, cleaning cycle and retained liquid define exposure at the installed part.
Oil & Gas
Process valves and equipment closuresMonel 400 eye-end / swing bolts pivot into and out of the closures on process valves and equipment closures, allowing the clamp to release without removing the bolt from its hinge pin. Utility connections and pressure-boundary parts have separate acceptance requirements on the equipment drawing.
Same eye-end / swing bolt. Different material priorities.
Monel 400 material dataInconel 625
Solid-solution strength and resistance to aggressive process liquids.
- Connection priority
- Pivot contact and tension during cover clamping
- Annealed or solution-annealed 625
- The delivery condition affects strength and high-temperature response. Keep the specified condition with the component’s mechanical acceptance; 718-style aging is not the strengthening route for 625. Include liquid retained at the eye bore around its pivot and the nut-bearing seat in the exposure description.
Super Duplex 2507
Super-duplex strength and resistance to chloride pitting.
- Connection priority
- Pivot contact and tension during cover clamping
- Final duplex structure
- S32750 chemistry and final solution treatment belong together. Forming, section size and cooling affect the structure represented by the mechanical and corrosion records. Include liquid retained at the eye bore around its pivot and the nut-bearing seat in the exposure description.
Monel K-500
Age-hardened strength in the nickel–copper alloy family.
- Connection priority
- Pivot contact and tension during cover clamping
- Strength and hydrogen exposure
- K-500 gains strength through aging. Cathodic protection, hydrogen exposure and the ordered condition need joint consideration in highly loaded marine components. Include liquid retained at the eye bore around its pivot and the nut-bearing seat in the exposure description.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS N04400 · heat number · ordered condition
- Final-part acceptance
- Grade chemistry, supplied condition and ordered mechanical requirements.
- Dimensional record
- Eye bore · Eye thickness · Pivot-to-end length · Threads
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 400 eye-end / swing bolt enquiry
Questions about 400 eye-end / swing bolts
Is this the same as a rated lifting eye bolt?
This page covers swing-bolt cover and clamp connections. A lifting device needs a separately defined design, load rating and certification; DIN 444 geometry alone does not provide those.