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Certifications RoHS(3)

Custom Captive Screw Pan Head Torx Passivated Stainless Steel Screws Manufacturer for X Ray Inspection System

Available for enquiry 0.0 · 0 reviews 2 sold
USD

$ 20.00 20.0 USD $ 20.00

Not Available For Sale

Minimum order quantity: 10000 Units

Key attributes

View all
Measurement system
Inch, Metric, Impérial
Material
304 stainless steel, SUS304, SUS316L, A2-70, A2, A4, 18-8 Stainless Steel, A2-80, 316L Stainless Steel, A4-70, A4-80, Marine Grade Stainless Steel
Grade
CLASS 4
Thread Type
standard thread
Head style
Pan, Pan Head, Rounded Pan Head, Low Dome Pan Head
Finish (Specification)
Passivated, Passivation, Chemical Passivation, Stainless Steel Passivation
Product description

Highlights at a glance

  • Developed for X Ray Inspection System assemblies in Food & Hygienic Equipment applications, this drawing based Captive Screw can be produced in 304 or 316L stainless steel with passivation, a Pan Head, Torx drive, and machine thread. The captive function is treated as a drawing-defined retention feature only. No circlip groove, retained washer, press-fit section, swaged feature, reduced shank, or other retention mechanism is assumed unless the customer drawing specifies it. Shi Shi Tong develops this product as a nonstandard custom fastener rather than a catalog stock item. Engineering review focuses on Pan Head dimensions, Torx recess geometry, thread engagement, drawing-defined captive interfaces, mating clearances, passivation requirements, assembly access, and burr control. Because no detailed retention structure, captive travel, thread pitch, or tolerance class was supplied, those details follow the approved drawing. DFM analysis addresses cold heading, secondary machining, thread generation, captive-feature processing when required, deburring, cleaning, passivation, inspection, and repeatable assembly. Production can combine cold heading, CNC secondary machining, thread rolling or machining, deburring, cleaning, passivation, and final inspection. Quality control can include head-dimension checks, Torx fit, thread inspection, captive-function verification according to the drawing, passivated appearance, burr inspection, and batch traceability. This custom Captive Screw supports X Ray Inspection System projects where retained fastening, service access, and stable repeat assembly are important.
    • Certifications & compliance
    RoHS(3)
    RoHS compliant
    Frequently asked questions

    Material selection follows the released drawing and project requirements. Shi Shi Tong can produce this Captive Screw in 304 or 316L stainless steel as specified. We review certificate needs, corrosion environment, forming and machining feasibility, passivation compatibility, Pan Head geometry, Torx recess requirements, thread engagement, captive interfaces, and critical dimensions. Final material follows the approved drawing.

    The specified surface treatment is passivation. Shi Shi Tong reviews base surface condition, cleaning, threaded areas, Pan Head surfaces, Torx recess geometry, captive interfaces shown on the drawing, dimensional influence, and acceptance criteria before production. Passivation follows forming and machining. Final checks compare appearance, dimensions, thread condition, drive fit, and drawing-defined retention features.

    Because no fixed diameter or length is provided, Shi Shi Tong handles this as a drawing based Captive Screw project within the M1.2-M16 custom range. Feasibility depends on overall length, Pan Head dimensions, Torx geometry, thread length, retention interfaces, mating clearances, tolerance, passivation, and order volume. Final dimensions and the captive mechanism follow the X Ray Inspection System drawing.

    Tolerance control begins with the customer drawing and mating interfaces. Shi Shi Tong reviews Pan Head dimensions, Torx recess depth, thread geometry, retention interfaces, functional clearances, concentricity, assembly travel shown on the drawing, and passivation allowance. No circlip groove, retained washer, swaged feature, or reduced shank is assumed. DFM feedback is provided when tolerance creates fit risk.

    Lead time is confirmed after reviewing the drawing, selected stainless steel, quantity, tooling, cold-heading route, secondary machining, thread generation, captive-feature processing, passivation, inspection scope, and packaging. Shi Shi Tong does not use one fixed promise for every custom project. The workflow is drawing review, DFM feedback, sample development, approval, and batch production.

    Inspection follows the approved drawing and critical characteristics. Controls may include calipers, micrometers, depth gauges, thread gauges, optical measurement, Torx fit checks, Pan Head dimension checks, retention-interface verification, drawing-defined captive-function checks, passivated appearance, edge and burr inspection, and material verification. Shi Shi Tong uses first piece, in-process, and final checks.

    Yes. Shi Shi Tong focuses on nonstandard drawing based projects rather than one catalog configuration. Engineering review can cover Captive Screw and Machine Screw structures, Pan Head or drawing-defined heads, Torx or approved drives, customer-defined retention layouts, thread geometry, passivation, approved finishes, and secondary machining. Each project is evaluated from its drawing, function, route, and inspection needs.

    Within an X Ray Inspection System, drawing based Captive Screws may be used at access covers, inspection housings, sensor brackets, protective panels, service doors, adjustment modules, and interfaces where a fastener should remain associated with the assembly. Shi Shi Tong confirms head clearance, Torx access, thread engagement, retention behavior, passivation, burr control, and inspection requirements before sample approval.
    Description images
    Product detail
    Product detail
    Product detail
    Product detail
    RoHS(3)
    Packaging and fulfilment
    • Step 1

      Payment and order readiness

      Minimum order: 10000 Units

      Payment terms, specifications, and order details are confirmed before preparation begins.

    • Step 2

      Preparation

      30 days

    • Step 3

      Packaging and dispatch

      Ocean freight via Maersk · Approx. shipping fee: $ 0.84 for 1 unit · Transit time: Est. 17-24 days

      Final packing, freight, and delivery dates are confirmed before dispatch.

    Technical specifications
    Other details 24 fields
    Measurement system
    Inch, Metric, Impérial
    Material
    304 stainless steel, SUS304, SUS316L, A2-70, A2, A4, 18-8 Stainless Steel, A2-80, 316L Stainless Steel, A4-70, A4-80, Marine Grade Stainless Steel
    Grade
    CLASS 4
    Thread Type
    standard thread
    Head style
    Pan, Pan Head, Rounded Pan Head, Low Dome Pan Head
    Finish (Specification)
    Passivated, Passivation, Chemical Passivation, Stainless Steel Passivation
    Model number (Specification)
    M1.2-M16 Custom Drawing Based
    Place of origin
    China, Guangdong
    Assembly Fit
    Captive geometry is checked for stable equipment assembly
    Installation Space
    Pan-head clearance is reviewed before sample release
    Drive Support
    Torx engagement is reviewed for reliable tool access
    Drawing Review
    Critical interfaces are reviewed before sample release
    DFM Support
    DFM feedback balances function and manufacturability
    Sample Development
    Prototype samples verify fit before batch production
    Process Route
    Retention features are produced to approved drawings
    Inspection Focus
    Critical dimensions receive drawing based inspection
    Batch Traceability
    Lot records support material and process traceability
    Module Compatibility
    Captive interfaces are checked for serviceable assembly
    Selling Units
    Single item
    Single volume
    0 cm3
    Single gross weight
    0.0 kg
    Type (Product option)
    Captive Screw
    Length (Product option)
    Custom-made
    Certifications & Compliance
    RoHS(3)
    Lead time
    30 days
    Minimum order
    10000 Units

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