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NSN 5305-01-517-5560

High Torque Screw

About this product

0.401 inches fastener length, pan no. 2 head style, between 0.256 inches and 0.270 inches head diameter, head height: between 0.087 inches and 0.097 inches .

Manufacturer part number NAS7901A2 for national stock number 5305015175560.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-517-5560.

  • MPN or Model

    NAS7901A2

  • Schedule B
    8108.90.8000 (Other wrought titanium, nesoi)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.276 inches
  • Fastener Length
    0.401 inches
  • Head Style
    Pan no. 2
  • Head Diameter
    Between 0.256 inches and 0.270 inches
  • Head Height
    Between 0.087 inches and 0.097 inches
  • Grip Diameter
    0.137 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.138 inches
  • Grip Length
    0.125 inches
  • Thready Qty Per Inch (tpi)
    32
  • Material
    Titanium alloy
  • Material Specification
    Ams4928 assn standard 1st material response or ams4967 assn standard 2nd material response
  • Surface Treatment
    Aluminum
  • Surface Treatment Specification
    Nas4006 assn standard 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 5305015175560

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS7901A2 National Aerospace Standards
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