Monel K-500 Eye-end / swing bolts
DIN 444ASTM B865
Monel K-500 swing bolts combine a pivoting cover clamp with age-hardened strength in the nickel–copper alloy family. 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 / age hardened
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 or age hardenedAnnealing provides a workable starting condition, while controlled aging develops the higher strength specified for age-hardened K-500.
What we can make in Monel K-500
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 · age hardened
- Inspection
- Eye bore · Eye thickness · Pivot-to-end length · Threads
Manufacturing route
CNC machining suits samples and small batches. Volume heads are formed in a workable condition with the final aging route included in process planning.
Heat treatment & final condition
Solution treatment and the specified aging condition are recorded against the production lot; final dimensions are checked after thermal processing.
Finished geometry
Head geometry, bearing face, shank and thread fit are checked after the final machining and thermal operations.
Where K-500 fits — and what matters
Offshore & Marine
Seawater pump and cooling-system coversMonel K-500 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 K-500 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 K-500 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 K-500 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.
Duplex 2205
Duplex strength and chloride-corrosion resistance.
- Connection priority
- Pivot contact and tension during cover clamping
- S31803 or S32205
- The specified UNS fixes the chemistry. Solution treatment, section size and the ordered mechanical or corrosion tests establish the final duplex condition. 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 N05500 · heat number · ordered condition
- Final-part acceptance
- Lot-linked aging record and mechanical acceptance in the final condition.
- Dimensional record
- Eye bore · Eye thickness · Pivot-to-end length · Threads
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your K-500 eye-end / swing bolt enquiry
Questions about K-500 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.