NSN 5305-01-521-9591
High Torque Screw
1.718 inches fastener length, flat countersunk head style, between 0.293 inches and 0.301 inches head diameter, spline major diameter: between 0.154 inches and 0.156 inches .
Manufacturer part number ST3M557-3-21 for national stock number 5305015219591.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-521-9591.
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MPN or Model
ST3M557-3-21
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Schedule B
7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)) -
NMF (National Motor Freight)
096640 - Screws, Iron Or Steel -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
0.313 inches -
Fastener Length
1.718 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.293 inches and 0.301 inches -
Spline Major Diameter
Between 0.154 inches and 0.156 inches -
Grip Diameter
Between 0.1885 inches and 0.1895 inches -
Internal Drive Style
Torx -
Thread Diameter
0.190 inches -
Grip Length
1.312 inches -
Thready Qty Per Inch (tpi)
32 -
Countersink Angle
99.0 degrees and 101.0 degrees -
Part Name Assigned By Controlling Agency
Bolt, 100 degree reduced head, geardrive recess-special thread length inconcel 718 (125 ksi shear) -
Material
Nickel alloy 718 -
Material Specification
Bps-f-69 mfr ref single material response -
Surface Treatment
Passivate -
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 5305-01-521-9591 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
ST3M557-3-21 | Boeing Company, The |
HT4027-3-21 | Arconic Global Fasteners & Rings, |
ST3M557-3-21 | Fastener Innovation Technology, Inc. |
HT4027-3-21 | Sps Technologies, Llc |
WC4027-3-21 | West Coast Aerospace Inc |
HT4027-3-21 | Hi-shear Corporation |
HT4027-3-21 | Sps Technologies, Llc |
HT4027-3-21 | Lisi Aerospace Canada Corp |
HT4027-3-21 | Sps Technologies Inc |
ST3M557 | Boeing Company, The |
ST3M557-3-21 | Twist Tite Mfg, Inc |