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NSN 5305-01-529-7739

High Torque Screw

About this product

Between 1.763 inches and 1.793 inches fastener length, pan no. 2 head style, between 0.477 inches and 0.492 inches head diameter, head height: between 0.140 inches and 0.150 inches .

Manufacturer part number NAS1578V4H22 for national stock number 5305015297739.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-529-7739.

  • MPN or Model

    NAS1578V4H22

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.403 inches
  • Fastener Length
    Between 1.763 inches and 1.793 inches
  • Head Style
    Pan no. 2
  • Head Diameter
    Between 0.477 inches and 0.492 inches
  • Head Height
    Between 0.140 inches and 0.150 inches
  • Grip Diameter
    Between 0.249 inches and 0.250 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.365 inches and 1.385 inches
  • Thready Qty Per Inch (tpi)
    28
  • Part Name Assigned By Controlling Agency
    Bolt, flat pan head
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams4928 assn standard single material response or ams4967 assn standard single material response
  • Surface Treatment
    Passivate or cadmium
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response or qq-p-416, type ii, class 2 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 5305015297739

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1578V4H22 National Aerospace Standards
NAS1578V4H22 National Aerospace Standards
NAS1578V4H22 National Aerospace Standards
Stock Check
Availability for this item was last checked on 01/28/22. The quantities and conditions available at the time were:
  • NS: 20
  • NE: 5