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NSN 5305-00-435-8991

Panel Screw

About this product

1.010 inches fastener length, hexagon head style, between 0.300 inches and 0.320 inches head height, width between flats: between 0.370 inches and 0.390 inches .

Manufacturer part number 20C3259-1 for national stock number 5305004358991.

Datasheet

  • Product description

    Externally Relieved Body Screw NSN 5305-00-435-8991.

  • MPN or Model

    20C3259-1

  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    2a
  • Thread Length
    Between 0.370 inches and 0.390 inches
  • Fastener Length
    1.010 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.300 inches and 0.320 inches
  • Width Between Flats
    Between 0.370 inches and 0.390 inches
  • First Diameter From Head
    Between 0.190 inches and 0.200 inches
  • Distance From Largest Bearing Surface Of Head To End Of First Diameter
    Between 0.620 inches and 0.640 inches
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.250 inches
  • Thready Qty Per Inch (tpi)
    28
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Mil-f-14072, finish e300 military specification single treatment response
  • Thread Series Designator
    Unf
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Externally Relieved Body Screw

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Mechanic Bill explains Panel Screw

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NSN 5305004358991

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
20C3259-1 Northrop Grumman Systems Corporation
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