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NSN 5305-01-030-1769

High Torque Screw

About this product

Between 1.085 inches and 1.132 inches fastener length, flat countersunk head style, between 0.625 inches and 0.635 inches head diameter, grip diameter: between 0.3110 inches and 0.3120 inches .

Manufacturer part number BM19031-5-12 for national stock number 5305010301769.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-030-1769.

  • MPN or Model

    BM19031-5-12

  • 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 0.325 inches and 0.392 inches
  • Fastener Length
    Between 1.085 inches and 1.132 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.625 inches and 0.635 inches
  • Grip Diameter
    Between 0.3110 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.740 inches and 0.760 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Material
    Steel
  • Material Specification
    23-105 fscm 76301 mfr ref single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Mac ps13145, mcdonnell douglas corporation mfr ref single treatment response
  • Thread Series Designator
    Unjf
More from these suppliers
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 5305010301769

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BM19031-5-12 Huck International, Inc.
HT309-5-12 Hi-shear Corporation
HT8177-5-12 Alcoa Global Fasteners, Inc.
73991H-5-12 Sps Technologies, Llc
HT309-5-12 Lisi Aerospace Canada Corp
73991H-5-12 Sps Technologies, Llc
ST3M562-5-12 Boeing Company, The
BM19031-5-12 Huck Intl Inc
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