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NSN 5305-01-212-1987

High Torque Screw

About this product

Between 0.847 inches and 0.877 inches fastener length, flat countersunk head style, between 0.455 inches and 0.510 inches head diameter, locking feature: patch threads.

Manufacturer part number BACB30LU4P7 for national stock number 5305012121987.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-212-1987.

  • MPN or Model

    BACB30LU4P7

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096630 - Screws NOI Brass/bronze/copper
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.420 inches and 0.430 inches
  • Fastener Length
    Between 0.847 inches and 0.877 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.455 inches and 0.510 inches
  • Locking Feature
    Patch threads
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.427 inches and 0.447 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp e4340 and steel comp 8740
  • Material Specification
    Ams 6415 assn standard 1st material response or ams 6484 assn standard 1st material response or ams 6322 assn standard 2nd material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2, cl 2 federal specification single treatment response
  • Thread Series Designator
    Unjf
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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 5305012121987

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30LU4P7 Valley-todeco, Inc.
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Federal Manufacturing Corporation
BACB30LU4P7 Huck International, Inc.
BACB30LU4P7 Arconic Global Fasteners & Rings,
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Webber Manufacturing Company Inc
BACB30LU4P7 The Boeing Company
BACB30LU4P7 Voi-shan/chatsworth
BACB30LU4LN7 The Boeing Company
BACB30LU4P7 Valley-todeco, Inc.
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Huck International, Inc.
BACB30LU4P7 Federal Manufacturing Corporation
BACB30LU4P7 Arconic Global Fasteners & Rings,
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Sps Technologies, Llc
BACB30LU4P7 Webber Manufacturing Company Inc
BACB30LU4P7 The Boeing Company
BACB30LU4P7 Voi-shan/chatsworth
BACB30LU4LN7 The Boeing Company
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