NSN 5305-00-404-1827
High Torque Screw
Between 0.972 inches and 1.002 inches fastener length, flat countersunk head style, between 0.455 inches and 0.510 inches head diameter, locking feature: pellet threads or strip threads.
Manufacturer part number BACB30LU4LN9 for national stock number 5305004041827.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-00-404-1827.
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MPN or Model
BACB30LU4LN9
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NMF (National Motor Freight)
093486 - Bolts, Nuts Or Screws, NOI (sub 3) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.400 inches and 0.450 inches -
Fastener Length
Between 0.972 inches and 1.002 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.455 inches and 0.510 inches -
Locking Feature
Pellet threads or strip 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 0.552 inches and 0.572 inches -
Thready Qty Per Inch (tpi)
28 -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Material
Steel comp e4340 or steel comp 4340 or steel comp 8740 -
Surface Treatment
Cadmium and chromate -
Surface Treatment Specification
Qq-p-416 type 2 cl 3 federal specification single treatment response -
Thread Series Designator
Unf
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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.
Pricing and Availability
Get a quote for 5305-00-404-1827 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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BACB30LU4LN9 | Long-lok Fasteners Corporation |