NSN 5305-01-520-3838
High Torque Screw
Between 1.640 inches and 1.687 inches fastener length, flat countersunk head style, between 0.464 inches and 0.506 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .
Manufacturer part number HT181-4-19 for national stock number 5305015203838.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-520-3838.
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MPN or Model
HT181-4-19
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Schedule B
7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
0.469 inches -
Fastener Length
Between 1.640 inches and 1.687 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.464 inches and 0.506 inches -
Grip Diameter
Between 0.2485 inches and 0.2495 inches -
Point Length
0.060 inches -
Point Style
Flat -
Internal Drive Style
High-torque -
Thread Diameter
0.2500 inches -
Grip Length
Between 1.177 inches and 1.197 inches -
Thready Qty Per Inch (tpi)
28 -
Min. Tensile Strength (psi)
6400 pounds per square inch -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Surface Finish
32.0 microinches threads -
Material
Steel -
Material Specification
Nas98 assn standard single material response -
Surface Treatment
Cadmium -
Surface Treatment Specification
Nas672 federal standard single treatment response -
Thread Series Designator
Unjf
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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 5305-01-520-3838 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
HT181-4-19 | Hi-shear Corporation |
HT181-4-19 | Lisi Aerospace Canada Corp |