Monel K-500 Socket Head Cap Screws
ISO 4762ASTM B865
Monel K-500 socket head cap screws pair an age-hardened nickel-copper alloy with a compact, tapped assembly form for marine and pump components that must hold alignment in seawater service. Age hardening raises strength above Monel 400 while retaining the nickel-copper alloy’s seawater corrosion resistance.
- 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
Finished-Screw 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
Partial thread
Use where a plain grip must span the clamped components. Match the under-head length and thread length so the screw tightens the stack before its thread runout reaches the tapped hole.
Full thread
Use for shorter component stacks and varied tapped-hole depths. The longer usable thread offers adjustment, while the screw end must clear the bottom of a blind hole.
- Drive
- Internal hex socket
- Length basis
- Under head
- Thread systems
- Metric · UNC · UNF · UNJ
- Assembly
- Tapped holes · Nuts
- Final condition
- Annealed · age hardened
- Inspection
- Thread gauges · Head and shank dimensions
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
Marine valve bonnets
Monel K-500 Socket Head Cap ScrewsAn internal hex drive lets the tool approach along the screw axis on crowded bonnet and actuator assemblies. Monel K-500 supplies age-hardened strength where a nickel-copper fastener is wanted for marine exposure. This is particularly useful around closely spaced parts that leave little room to swing a spanner.
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and socket depth for drive engagement
- Chloride exposure, age-hardened condition, and heat-number certification
Seawater pumps
Monel K-500 Socket Head Cap ScrewsThese screws suit compact pump covers and accessory mounts where surrounding pipework restricts access to an external hex head. K-500 combines a strong screw body with suitability for flowing-seawater service. The socket recess remains an exposed pocket, so the local washdown and seawater-retention conditions matter as much as the bulk pump fluid.
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and counterbore clearance required
- Seawater exposure, age-hardened condition, and heat-number certification
Submersible pump motor housings
Monel K-500 Socket Head Cap ScrewsK-500 socket screws can secure a submersible motor end cover within a compact bolt circle. Their aged strength is useful where the cover load must be carried by small fasteners, and recessed heads leave access between nearby housing features. Selection also accounts for water retained at the head and the housing's cathodic-protection exposure.
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and socket depth for drive engagement
- Seawater exposure, age-hardened condition, and heat-number certification
Same socket head cap screw. Different material priorities.
Monel K-500 material dataInconel 625 Socket Head Cap Screws
Inconel 625 socket head cap screws fit compact seawater housings and wet-process covers where liquid can remain beneath the head or inside the drive. Chloride pitting and crevice-corrosion resistance supports these exposed fastening points. Axial access suits recessed mounts between adjacent fittings.
Inconel 718 Socket Head Cap Screws
Inconel 718 socket head cap screws put precipitation-hardened strength into highly loaded, counterbored connections on heated test fixtures and compact machinery mounts. The internal drive reaches the screw between adjacent components. They are especially relevant when the hole pattern limits screw diameter and the drawing calls for high strength at the actual operating temperature.
Hastelloy C-276 Socket Head Cap Screws
Hastelloy C-276 socket head cap screws fit compact chemical-pump and delivery-system attachments with restricted wrench access. Corrosion resistance matters at the loaded screw and liquid-retaining drive recess. Axial tooling reaches recessed holes near fittings and manifold hardware.
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
- Thread gauges · Head and shank dimensions
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your K-500 socket head cap screw enquiry
Questions about K-500 socket head cap screws
What changes when the screw is stronger than the housing?
The housing thread can strip before the screw reaches its tensile capacity. The engagement depth and housing material therefore belong in the joint assessment alongside the screw’s final strength condition.