NSN 5305-01-407-7170
High Torque Screw
Between 1.972 inches and 2.002 inches fastener length, flat countersunk head style, between 0.604 inches and 0.674 inches head diameter, grip diameter: between 0.4365 inches and 0.4370 inches .
Manufacturer part number NAS1581K7BT21 for national stock number 5305014077170.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-407-7170.
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MPN or Model
NAS1581K7BT21
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Schedule B
8109.90.0000 (Zirconium and articles thereof nesoi) -
NMF (National Motor Freight)
096640 - Screws, Iron Or Steel -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
0.675 inches -
Fastener Length
Between 1.972 inches and 2.002 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.604 inches and 0.674 inches -
Grip Diameter
Between 0.4365 inches and 0.4370 inches -
Internal Drive Style
Offset cruciform (torque set) -
Thread Diameter
0.437 inches -
Grip Length
Between 1.302 inches and 1.322 inches -
Thready Qty Per Inch (tpi)
20 -
Min. Tensile Strength (psi)
160000 pounds per square inch -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Material
Titanium alloy uns r56400 -
Material Specification
Ams 4928 assn standard single material response or ams 4967 assn standard single material response -
Thread Series Designator
Unjf -
Specification Data
80205-nas1581 professional/industrial association standard
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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 5305-01-407-7170 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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NAS1581K7BT21 | National Aerospace Standards |
NAS1581K7T21 | National Aerospace Standards |