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NSN 5305-00-478-6624

High Torque Screw

About this product

Between 0.881 inches and 0.928 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .

Manufacturer part number HT195-4-8 for national stock number 5305004786624.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-478-6624.

  • MPN or Model

    HT195-4-8

  • 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)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.371 inches and 0.438 inches
  • Fastener Length
    Between 0.881 inches and 0.928 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.490 inches and 0.510 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    100.0 degrees
  • Material
    Steel
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Mac p.S. 13145, fscm 76301 mfr ref single 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 5305004786624

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT195-4-8 Hi-shear Corporation
66117H4-8 Sps Technologies, Llc
HT195-4-8 Lisi Aerospace Canada Corp
HT195-4-8 Alcoa Fastening Systems
66117H4-8 Sps Technologies, Llc
HT195-4-8 Satair A/s
3M263-4-8 Boeing Company, The
HS2623-4Z8 Brew Mfg Co
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