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NSN 5305-01-027-4661

High Torque Screw

About this product

Furnished with one o-ring.

Manufacturer part number CHT4020-4-8A for national stock number 5305010274661.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-027-4661.

  • MPN or Model

    CHT4020-4-8A

  • 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 0.442 inches and 0.509 inches
  • Fastener Length
    Between 0.952 inches and 0.999 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.502 inches and 0.507 inches
  • Head Height
    Between 0.071 inches and 0.073 inches
  • Grip Diameter
    Between 0.2490 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
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Thread Series Designator
    Unjf
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 5305010274661

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
CHT4020-4-8A Alcoa Global Fasteners, Inc.
CHT4020-4-8A Deutsch Co The
CHT4020-4-8A Sps Technologies, Llc
HT4020-4-8A Hi-shear Corporation
HT4020-4-8A Sps Technologies, Llc
HT4020-4-8A Lisi Aerospace Canada Corp
HT4020-4-8A Alcoa Global Fasteners, Inc.
HT4020-4-8A Sps Technologies, Llc
ST3M652C4-8A Valley-todeco, Inc.
HT4020-4-8A Arconic Global Fasteners & Rings,
ST3M652C4-8A Heartland Precision Fasteners, Inc.
HT4020-4-8A Huck International, Inc.
ST3M652C4-8A Houston Precision Fasteners I, Lp
HT4020-4-8A Sps Technologies, Llc
ST3M652C4-8A Fastener Innovation Technology, Inc.
HT4020-4-8A Sps Technologies, Llc
11925C4-8A Reid Products Inc.
WC4020-4-8A West Coast Aerospace Inc
HT4020-4-8A Sps Technologies Ltd Tj Brooks
ST3M652C4-8A Boeing Company, The
HT4020-4-8A Huck Intl Inc
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