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NSN 5306-01-027-1995

Close Tolerance Hex Head Bolt

About this product

Between 0.946 inches and 0.976 inches fastener length, double hexagon w/hole head style, between 0.265 inches and 0.285 inches head height, width between flats: between 0.243 inches and 0.251 inches .

Manufacturer part number ST3M571-3-9 for national stock number 5306010271995.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-027-1995.

  • MPN or Model

    ST3M571-3-9

  • 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 0.337 inches and 0.399 inches
  • Fastener Length
    Between 0.946 inches and 0.976 inches
  • Head Style
    Double hexagon w/hole
  • Head Height
    Between 0.265 inches and 0.285 inches
  • Width Between Flats
    Between 0.243 inches and 0.251 inches
  • Extended Washer Diameter
    Between 0.340 inches and 0.350 inches
  • Extended Washer Thickness
    Between 0.054 inches and 0.074 inches
  • Grip Diameter
    Between 0.1890 inches and 0.1895 inches
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.562 inches
  • Thready Qty Per Inch (tpi)
    32
  • 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 5306010271995

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M571-3-9 Boeing Company, The
BM3326-3-9 Huck International, Inc.
S371-3-9 Huck International, Inc.
VS3060-3-9 Arconic Global Fasteners & Rings,
VAL23033-3-9 Valley-todeco, Inc.
AIC752-3-9 Sps Technologies, Llc
MB84-3-9 Hi-shear Corporation
74328-3-9 Sps Technologies, Llc
MB84-3-9 Lisi Aerospace Canada Corp
MB84-3-9 Alcoa Fastening Systems
VS3060-3-9 Alcoa Fastening Systems
ST3M571-3-9 Sps Technologies, Llc
S11-1059-3-9 Sonic Industries Inc.
VS3060-3-9 Alcoa Global Fasteners, Inc.
74328-3-9 Sps Technologies, Llc
MB84-3-9 Satair A/s
BM3326-3-9 Huck Intl Inc
S371-3-9 Huck Intl Inc
ST3M571-3-9 Boeing Company, The
BM3326-3-9 Huck International, Inc.
S371-3-9 Huck International, Inc.
VS3060-3-9 Arconic Global Fasteners & Rings,
VAL23033-3-9 Valley-todeco, Inc.
AIC752-3-9 Sps Technologies, Llc
MB84-3-9 Hi-shear Corporation
74328-3-9 Sps Technologies, Llc
MB84-3-9 Lisi Aerospace Canada Corp
MB84-3-9 Alcoa Fastening Systems
VS3060-3-9 Alcoa Fastening Systems
ST3M571-3-9 Sps Technologies, Llc
S11-1059-3-9 Sonic Industries Inc.
MB84-3-9 Satair A/s
BM3326-3-9 Huck Intl Inc
S371-3-9 Huck Intl Inc
74328-3-9 Sps Technologies, Llc
VS3060-3-9 Alcoa Global Fasteners, Inc.
ST3M571-3-9 Boeing Company, The
BM3326-3-9 Huck International, Inc.
S371-3-9 Huck International, Inc.
VS3060-3-9 Arconic Global Fasteners & Rings,
MB84-3-9 Hi-shear Corporation
VAL23033-3-9 Valley-todeco, Inc.
AIC752-3-9 Sps Technologies, Llc
74328-3-9 Sps Technologies, Llc
MB84-3-9 Lisi Aerospace Canada Corp
VS3060-3-9 Alcoa Fastening Systems
MB84-3-9 Alcoa Fastening Systems
ST3M571-3-9 Sps Technologies, Llc
S11-1059-3-9 Sonic Industries Inc.
MB84-3-9 Satair A/s
74328-3-9 Sps Technologies, Llc
VS3060-3-9 Alcoa Global Fasteners, Inc.
BM3326-3-9 Huck Intl Inc
S371-3-9 Huck Intl Inc
ST3M571-3-9 Boeing Company, The
BM3326-3-9 Huck International, Inc.
S371-3-9 Huck International, Inc.
VS3060-3-9 Arconic Global Fasteners & Rings,
VAL23033-3-9 Valley-todeco, Inc.
AIC752-3-9 Sps Technologies, Llc
MB84-3-9 Hi-shear Corporation
74328-3-9 Sps Technologies, Llc
MB84-3-9 Lisi Aerospace Canada Corp
MB84-3-9 Alcoa Fastening Systems
VS3060-3-9 Alcoa Fastening Systems
ST3M571-3-9 Sps Technologies, Llc
S11-1059-3-9 Sonic Industries Inc.
MB84-3-9 Satair A/s
BM3326-3-9 Huck Intl Inc
VS3060-3-9 Alcoa Global Fasteners, Inc.
74328-3-9 Sps Technologies, Llc
S371-3-9 Huck Intl Inc
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