Monel 400 Socket Head Cap Screws
ISO 4762ASTM B164
Monel 400 socket head cap screws fit compact marine covers and pump housings where tightening access is along the screw axis. They combine a small head envelope with nickel-copper corrosion resistance for suitable seawater and industrial-water duties.
- 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
Finished-Screw 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
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 · Cold worked
- Inspection
- Thread gauges · Head and shank dimensions
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
Seawater pumps
Monel 400 Socket Head Cap ScrewsAccessory covers on seawater pumps often sit close to pipes or motor brackets. Monel 400 socket screws allow axial tightening in these restricted spaces. A counterbore supports the head, but it can also retain seawater; its drainage and access for cleaning influence how readily the screw can be removed later.
Connection requirements
- Counterbore fit and drainage
- Axial tool path
- Tapped-hole depth and screw condition
Submersible pump motor housings
Monel 400 Socket Head Cap ScrewsSubmersible motor housings need compact cover fasteners with a controlled projection. Monel 400 socket screws can serve suitable marine-water exposures while keeping the head within a recessed seat. Screw length should provide the intended thread engagement without bottoming in a blind housing hole.
Connection requirements
- Housing alloy and thread engagement
- Blind-hole depth
- Water chemistry and pressure-boundary drawing
Marine valve bonnets
Monel 400 Socket Head Cap ScrewsA marine valve’s auxiliary cover may leave room only for an axial key. Monel 400 socket screws keep that cover removable without a wide external head. The surrounding recess should allow the key to reach its full engagement depth, particularly where dried salt can collect around the screw.
Connection requirements
- Drive size and full key access
- Cover thickness and head seat
- Salt deposition and cleaning access
Same socket head cap screw. Different material priorities.
Monel 400 material dataMonel K-500 Socket Head Cap Screws
Monel K-500 socket head cap screws fit compact marine housings and pump covers where a tool can approach along the screw axis. Age hardening supplies strength in the small fastening envelope, while the nickel-copper alloy suits selected seawater exposure.
Inconel 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.
Duplex 2205 Socket Head Cap Screws
2205 socket screws suit compact pump covers and washdown mounts that need both strength and resistance to chloride exposure. Their heads fit recessed seats between surrounding equipment. The actual water chemistry and finished-screw properties establish the useful duty for this duplex option.
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
- Thread gauges · Head and shank dimensions
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 400 socket head cap screw enquiry
Questions about 400 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.