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NSN 5305-01-191-2469

High Torque Screw

About this product

Drive ribbed.

Manufacturer part number SC1779-6-20 for national stock number 5305011912469.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-191-2469.

  • MPN or Model

    SC1779-6-20

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.534 inches and 0.601 inches
  • Fastener Length
    Between 1.794 inches and 1.841 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.717 inches and 0.760 inches
  • Grip Diameter
    Between 0.3735 inches and 0.3745 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.240 inches and 1.260 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    220000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp h11
  • Material Specification
    Ams6487 assn standard single material response
  • Surface Treatment
    Cadmium or cadmium and chromate
  • Surface Treatment Specification
    Nas672 assn standard 1st treatment response or mil-c-8837, ty2, cl2 military specification 2nd treatment response
  • Thread Series Designator
    Unjf
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Close Tolerance Screw

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Mechanic Bill explains High Torque Screw

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NSN 5305011912469

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
SC1779-6-20 Arconic Global Fasteners & Rings,
PBF1202-6-20 Sps Technologies, Llc
HR204-6-20 Hi-shear Corporation
106706T-6-20 Sps Technologies, Llc
HR204-6-20 Lisi Aerospace Canada Corp
GB510CE6-20 Northrop Grumman Systems Corporation
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