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NSN 5306-00-324-7712

Close Tolerance Hex Head Bolt

About this product

Between 2.440 inches and 2.470 inches fastener length, double hexagon w/hole head style, between 0.425 inches and 0.445 inches head height, width between flats: between 0.492 inches and 0.502 inches .

Manufacturer part number ST3M571-7H28 for national stock number 5306003247712.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-324-7712.

  • MPN or Model

    ST3M571-7H28

  • 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 0.680 inches and 0.730 inches
  • Fastener Length
    Between 2.440 inches and 2.470 inches
  • Head Style
    Double hexagon w/hole
  • Head Height
    Between 0.425 inches and 0.445 inches
  • Width Between Flats
    Between 0.492 inches and 0.502 inches
  • Extended Washer Diameter
    Between 0.740 inches and 0.750 inches
  • Extended Washer Thickness
    Between 0.089 inches and 0.109 inches
  • Hole Diameter
    0.055 inches
  • Grip Diameter
    Between 0.4365 inches and 0.4370 inches
  • Thread Diameter
    0.437 inches
  • Grip Length
    Between 1.740 inches and 1.760 inches
  • Hole Quantity
    4
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    20
  • Hole Configuration Style
    Hexagon longitudinal hole
  • Material
    Stainless steel
  • Surface Treatment
    Passivate
  • 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 5306003247712

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M571-7H28 Boeing Company, The
AIC752-7H28 Sps Technologies, Llc
ST3M571-7H28 Sps Technologies, Llc
S11-1059-7H28 Sonic Industries Inc.
74328-7H28 Sps Technologies, Llc
MB84-7H28 Hi-shear Corporation
VAL23033-7H28 Valley-todeco, Inc.
VS3060-7H28 Arconic Global Fasteners & Rings,
ST3M571-7H28 Heartland Precision Fasteners, Inc.
BM3326-7H28 Huck International, Inc.
STEM571-7H28 Fastener Innovation Technology, Inc.
ST3M571-7H28 Reid Products Inc.
74328-7H28 Sps Technologies, Llc
MB84-7H28 Lisi Aerospace Canada Corp
74328-7H28 Sps Technologies Inc
BM3326-7H28 Huck Intl Inc
S371-7H28 Huck Intl Inc
VS3060-7H28 Alcoa Global Fasteners, Inc.
ST3M751-7H28 Heartland Precision Fasteners, Inc.
ST3M751-7H28 Fastener Innovation Technology, Inc.
ST3M571-7H28 Sequence Support Services Inc
SLB253-7H28 Space-lok, Inc.
GS1030-7H28 B & B Specialties Inc.
Stock Check
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