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NSN 5305-01-494-8021

High Torque Screw

About this product

Item intended for use in fuel sealing applications.

Manufacturer part number ST3M652C5-17D for national stock number 5305014948021.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-494-8021.

  • MPN or Model

    ST3M652C5-17D

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.531 inches
  • Fastener Length
    Between 1.577 inches and 1.624 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.6287 inches and 0.6335 inches
  • Head Height
    Between 0.0878 inches and 0.0898 inches
  • Grip Diameter
    Between 0.3115 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.3125 inches
  • Grip Length
    Between 1.052 inches and 1.072 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Stainless steel
  • 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 5305014948021

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M652C5-17D Boeing Company, The
11925C5-17D Reid Products Inc.
HT4020-5-17 Hi-shear Corporation
HT4020-5-17 Sps Technologies, Llc
HT4020-5-17 Sps Technologies Ltd Tj Brooks
HT4020-5-17 Lisi Aerospace Canada Corp
Stock Check
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