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Product video
Certifications RoHS(3)

Custom Captive Shoulder Screw Small Flat Low Head Phillips Slotted Fasteners Manufacturer for X Ray Inspection System

Available for enquiry 0.0 · 0 reviews
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
Low head, Low profile head, Small Flat Head, Compact Flat Head, Flat Low Head, Low Clearance Head, Slim Head, Reduced Head, Thin 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 Step Screw can be produced in 304 or 316L stainless steel with passivation, a Small Flat Head or Low Head, Phillips or Slotted drive, machine thread, a stepped locating section, and a captive retention function. The captive function is treated as drawing-defined only. No circlip groove, retained washer, swaged section, press-fit feature, reduced shank, or other retention mechanism is assumed unless shown on the released drawing. The step structure is reviewed independently from the captive function so shoulder diameter, locating length, transition geometry, thread engagement, head clearance, and drive access can be evaluated for the mating assembly. Shi Shi Tong develops this part as a nonstandard custom fastener rather than a catalog stock item. Engineering support covers drawing review, DFM analysis, sample development, process planning, and batch production. Manufacturing can combine cold heading, secondary machining, thread rolling or machining, step formation, retention-feature processing when required, deburring, cleaning, passivation, and inspection. Because no detailed captive mechanism, shoulder ratio, exact size, thread pitch, or retention travel was supplied, those items follow the approved drawing. Quality control can include head-dimension checks, Phillips or Slotted drive verification, thread inspection, shoulder measurement, drawing-defined captive-function checks, passivated appearance, burr inspection, final inspection, and batch traceability. This custom Step Screw supports X Ray Inspection System projects where compact fastening, repeatable locating geometry, retained hardware, and stable service access 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 Step Screw in 304 or 316L stainless steel as specified. We review certificate needs, corrosion environment, forming and machining feasibility, passivation compatibility, head geometry, selected drive, shoulder dimensions, thread requirements, and captive interfaces before sampling. Final material follows the approved drawing

    The specified surface treatment is passivation. Shi Shi Tong reviews base surface condition, cleaning, threaded areas, Small Flat Head or Low Head surfaces, selected drive recess, shoulder interfaces, captive features on the drawing, dimensional influence, and acceptance criteria. Passivation follows forming and machining. Final checks compare appearance, dimensions, thread condition, drive fit, and step geometry.

    Because no fixed diameter or length is provided, Shi Shi Tong handles this as a drawing based Step Screw project within the M1.2-M16 custom range. Feasibility depends on overall length, head dimensions, Phillips or Slotted geometry, shoulder diameter and locating length, thread length, captive interfaces, tolerance, passivation, and order volume. Final dimensions and retention details follow the X Ray Inspection System drawing

    Tolerance control begins with the customer drawing and mating interfaces. Shi Shi Tong reviews shoulder diameter, locating length, transition radii, head dimensions, selected drive geometry, thread dimensions, retention interfaces, concentricity, clearances, and passivation allowance. No circlip groove, washer, swage, reduced shank, or retention travel 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, shoulder forming or 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, head-dimension checks, Phillips or Slotted drive verification, shoulder diameter and locating-length checks, drawing-defined captive-function checks, passivated appearance, edge and burr inspection, and material verification before final release.

    Yes. Shi Shi Tong focuses on nonstandard drawing based projects rather than one catalog configuration. Engineering review can cover Step Screw and Captive Screw structures, Small Flat Head, Low Head or drawing-defined heads, Phillips, Slotted or approved drives, locating sections, customer-defined retention layouts, passivation, approved finishes, and machining. Each project is evaluated from its drawing and inspection needs.

    Within an X Ray Inspection System, drawing based captive Step Screws may be used at access panels, inspection housings, sensor brackets, protective covers, adjustment modules, and locating interfaces where the fastener should remain with the assembly. Shi Shi Tong confirms shoulder fit, head clearance, drive access, thread engagement, retention behavior, passivation, burr control, and inspection requirements before 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
    Low head, Low profile head, Small Flat Head, Compact Flat Head, Flat Low Head, Low Clearance Head, Slim Head, Reduced Head, Thin 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 step geometry is checked for stable equipment fit
    Positioning Support
    Shoulder interfaces are reviewed for repeatable locating fit
    Installation Space
    Small flat and low-head clearance is checked before sampling
    Drive Support
    Phillips and slot access are reviewed for reliable tool fit
    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
    Forming and retention steps follow approved drawings
    Inspection Focus
    Critical dimensions receive drawing based inspection
    Batch Traceability
    Lot records support material and process traceability
    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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