Turnlock Fastener Stud Assembly

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  • Part Name
    TURNLOCK FASTENER STUD ASSEMBLY
  • Federal Supply Class
    Fastening Devices
  • NIIN
    013382887
  • Part Number
    BACS21Y5BC, 27S12-5-1BB
  • National Stock Number
    5325-01-338-2887
  • Item Name Code
    18484
Specifications
  • MATERIAL
    COBALT ALLOY EJECTOR SPRING
  • STEEL COMP 305 EYELET
  • COBALT ALLOY PIN
  • COPPER ALLOY 172 STUD
  • MATERIAL DOCUMENT AND CLASSIFICATION
    QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE EYELET
  • QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE STUD
  • SURFACE TREATMENT
    PASSIVATE EYELET
  • TURNLOCK STUD HEAD STYLE
    STUD HEAD
  • DIAMETER
    0.251 INCHES MINIMUM AND
  • 0.256 INCHES MAXIMUM
  • STUD HEAD HEIGHT
    0.069 INCHES MINIMUM AND
  • 0.076 INCHES MAXIMUM
  • STUD ASSEMBLY STYLE
    STUD ASSEMBLY
  • DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD
    0.542 INCHES NOMINAL
  • EYELET OUTSIDE DIAMETER
    0.247 INCHES NOMINAL
  • EYELET LENGTH
    0.328 INCHES NOMINAL
  • DRIVE TYPE
    SLOTTED
  • MATERIAL ACCOMMODATED THICKNESS
    0.150 INCHES MINIMUM AND
  • 0.179 INCHES MAXIMUM
Restrictions
  • Demilitarization Code
    A

    Items subject to the Export Administration Regulations (EAR) in parts 773-74 of Title 15, Code of Federal Regulations (CFR) (CCLI or EAR99) and determined by the DoD to present a low risk when released out of DoD control. No DEMIL, MUT or end use certificate is required. May require an export license from DOC.

  • Criticality Code
    X

    Does not have a nuclear hardened feature or other critical feature such as tolerance, fit restriction or application.

  • Hazardous Material Code
    N

    There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

  • Precious Metals Code (PMIC)
    A

    Item does not contain Precious Metal.

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