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NSN 5306-01-599-4544

Close Tolerance Hex Head Bolt

About this product

1.737 inches fastener length, flat countersunk head style, between 0.3859 inches and 0.3948 inches head diameter, hole diameter: 0.076 inches .

Manufacturer part number 3M1277E4D21A for national stock number 5306015994544.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-599-4544.

  • MPN or Model

    3M1277E4D21A

  • Schedule B
    7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire))
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.425 inches
  • Fastener Length
    1.737 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.3859 inches and 0.3948 inches
  • Hole Diameter
    0.076 inches
  • Grip Diameter
    Between 0.2648 inches and 0.2651 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    1.312 inches
  • Hole Quantity
    1
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    28
  • Hole Configuration Style
    Round
  • Countersink Angle
    Between 90.0 degrees and 101.0 degrees
  • Material
    Nickel alloy 718
  • Material Specification
    Ams5662 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Mil-l-87132, type 1, grade b military specification single treatment response
  • Thread Series Designator
    Unjf
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Close Tolerance Bolt

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

Mechanic Bill explains Close Tolerance Hex Head Bolt

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NSN 5306015994544

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M1277E4D21A Boeing Company, The
TX1027E4D21A Sps Technologies, Llc
3M1277E4D21A Valley-todeco, Inc.
TX1027E4D21A Arconic Global Fasteners & Rings,
3M1277E4D21A Saturn Fasteners Inc
3M1277E4D21A Heartland Precision Fasteners, Inc.
3M1277E4D21A B & B Specialties Inc.
3M1277E4D21A Houston Precision Fasteners I, Lp
TX1027E4D21A Sps Technologies, Llc
3M1277E4D21A Camcar Llc
3M1277E4D21A Fastener Innovation Technology, Inc.
TX1027E4D21A Sps Technologies, Llc
11861E4D21A Reid Products Inc.
WC1277E4D21A West Coast Aerospace Inc
TX1027E4D21A Hi-shear Corporation
TX1027E4D21A Sps Technologies, Llc
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