NSN 5305-00-842-1639
High Torque Screw
Retaining element in shank.
Manufacturer part number CA2730-4-78 for national stock number 5305008421639.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-00-842-1639.
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MPN or Model
CA2730-4-78
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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) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.270 inches and 0.323 inches -
Fastener Length
Between 5.313 inches and 5.333 inches -
Head Style
Fillister -
Head Diameter
0.374 inches -
Head Height
0.273 inches -
Grip Diameter
Between 0.2487 inches and 0.2492 inches -
Shank Unthreaded Hole Diameter
0.076 inches all holes and 0.086 inches all holes -
Internal Drive Style
Hexagon -
Thread Diameter
0.250 inches -
Grip Length
Between 4.875 inches and 4.895 inches -
Width Across Flats
Between 0.188 inches and 0.190 inches -
Thready Qty Per Inch (tpi)
28 -
Distance From Head Largest Bearing Surface To Shank Hole Center
5.224 inches all holes -
Material
Steel -
Thread Series Designator
Unc
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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.
![Mechanic Bill explains High Torque Screw](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5305-00-842-1639 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
CA2730-4-78 | Arconic Global Fasteners & Rings, |
AS104-04-78 | Avibank Mfg., Inc. |
CC00035-4-78 | Lockheed Martin Corporation |
Stock Check
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