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NSN 5305-01-494-8499

High Torque Screw

About this product

Furnished with one oring.

Manufacturer part number HT4020-6-21 for national stock number 5305014948499.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-494-8499.

  • MPN or Model

    HT4020-6-21

  • 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 0.625 inches and 0.672 inches
  • Fastener Length
    Between 1.2970 inches and 1.9945 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.7556 inches and 0.7604 inches
  • Head Height
    Between 0.1147 inches and 0.1167 inches
  • Grip Diameter
    Between 0.3740 inches and 0.3745 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.3750 inches
  • Grip Length
    Between 1.3025 inches and 1.3225 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp xm-13
  • Material Specification
    Ams5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification 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 5305014948499

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4020-6-21 Sps Technologies, Llc
HT4020-6-21 Hi-shear Corporation
HT4020-6-21 Sps Technologies Ltd Tj Brooks
HT4020-6-21 Lisi Aerospace Canada Corp
ST3M652C6-21D Boeing Company, The
HT4020-6-21 Alcoa Global Fasteners, Inc.
ST3M652C6-21D Arconic Global Fasteners & Rings,
HT4020-6-21 Huck International, Inc.
ST3M652C6-21D Fastener Innovation Technology, Inc.
ST3M652C6-21D West Coast Aerospace Inc
HT4020-6-21 Huck Intl Inc
HT4020-6-21 Sps Technologies Inc
HT4020-6-21 Valley-todeco, Inc.
HT4020-6-21 Sps Technologies, Llc
HT4020-6-21 Heartland Precision Fasteners, Inc.
HT4020-6-21 Houston Precision Fasteners I, Lp
HT4020-6-21 Sps Technologies, Llc
HT4020-6-21 Sps Technologies, Llc
HT4020-6-21 Reid Products Inc.
Stock Check
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