NSN 5305-01-434-6988
High Torque Screw
0.863 inches fastener length, flat countersunk head style, between 0.3902 inches and 0.3988 inches head diameter, grip diameter: between 0.3312 inches and 0.3314 inches .
Manufacturer part number NAS1994-7T for national stock number 5305014346988.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-434-6988.
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MPN or Model
NAS1994-7T
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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
0.425 inches -
Fastener Length
0.863 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.3902 inches and 0.3988 inches -
Grip Diameter
Between 0.3312 inches and 0.3314 inches -
Internal Drive Style
Offset cruciform (torque set) -
Thread Diameter
0.250 inches -
Grip Length
Between 0.428 inches and 0.448 inches -
Thready Qty Per Inch (tpi)
28 -
Countersink Angle
Between 99.0 degrees and 100.0 degrees -
Material
Steel comp 4140 or steel comp 4340 or steel comp 8740 -
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 5305-01-434-6988 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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NAS1994-7T | National Aerospace Standards |