1-321-802-5889

NSN 5306-01-254-4366

Close Tolerance Hex Head Bolt

About this product

Between 1.945 inches and 1.992 inches fastener length, double hexagon head style, between 0.271 inches and 0.291 inches head height, width between flats: 0.752 inches .

Manufacturer part number ST3M453-8D21 for national stock number 5306012544366.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-254-4366.

  • MPN or Model

    ST3M453-8D21

  • 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.)
    0.2 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.623 inches and 0.690 inches
  • Fastener Length
    Between 1.945 inches and 1.992 inches
  • Head Style
    Double hexagon
  • Head Height
    Between 0.271 inches and 0.291 inches
  • Width Between Flats
    0.752 inches
  • Grip Diameter
    Between 0.4990 inches and 0.4995 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.111 inches first hole
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.817 inches first hole and 1.874 inches first hole
  • Material
    Steel comp xm-13
  • Material Specification
    Ams5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response
  • Thread Series Designator
    Unjf
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 5306012544366

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M453-8D21 Boeing Company, The
VS3204-8D21 Arconic Global Fasteners & Rings,
ST3M453-8D21 M.s. Aerospace Inc.
BM17019-8D21 Huck International, Inc.
11825-8D21 Reid Products Inc.
ST3M453-8D21 Alcoa Global Fasteners, Inc.
109453-8D21 Sps Technologies, Llc
S11-1060-8D21 Sonic Industries Inc.
VAL23029-8D21 Valley-todeco, Inc.
AIC753-8D21 Sps Technologies, Llc
PBF1253-8D21 Sps Technologies, Llc
MB61-8D21 Hi-shear Corporation
S353-8D21 Huck International, Inc.
MB61-8D21 Lisi Aerospace Canada Corp
ST3M453-8D21 Kenaloy Products Inc Sub
KS3020-8D21 Kenaloy Products Inc Sub
BM17019-8D21 Huck Intl Inc
S353-8D21 Huck Intl Inc
ST3M453-8D21 Abounding Security Inc
VS3204-8D21 Alcoa Global Fasteners, Inc.
MA5453-8D21 Abounding Security Inc
ST3M453-8D21 Boeing Company, The
VS3204-8D21 Arconic Global Fasteners & Rings,
ST3M453-8D21 M.s. Aerospace Inc.
BM17019-8D21 Huck International, Inc.
11825-8D21 Reid Products Inc.
ST3M453-8D21 Alcoa Global Fasteners, Inc.
109453-8D21 Sps Technologies, Llc
S11-1060-8D21 Sonic Industries Inc.
VAL23029-8D21 Valley-todeco, Inc.
AIC753-8D21 Sps Technologies, Llc
PBF1253-8D21 Sps Technologies, Llc
MB61-8D21 Hi-shear Corporation
S353-8D21 Huck International, Inc.
MB61-8D21 Lisi Aerospace Canada Corp
MA5453-8D21 Abounding Security Inc
VS3204-8D21 Alcoa Global Fasteners, Inc.
ST3M453-8D21 Kenaloy Products Inc Sub
KS3020-8D21 Kenaloy Products Inc Sub
ST3M453-8D21 Abounding Security Inc
BM17019-8D21 Huck Intl Inc
S353-8D21 Huck Intl Inc
GS1016-8D21 B & B Specialties Inc.
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