NSN 5305-01-521-9549
High Torque Screw
1.531 inches fastener length, oval countersunk head style, between 0.2966 inches and 0.3016 inches head diameter, grip diameter: between 0.1890 inches and 0.1895 inches .
Manufacturer part number ST3M557-3-20 for national stock number 5305015219549.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-521-9549.
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MPN or Model
ST3M557-3-20
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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
0.406 inches -
Fastener Length
1.531 inches -
Head Style
Oval countersunk -
Head Diameter
Between 0.2966 inches and 0.3016 inches -
Grip Diameter
Between 0.1890 inches and 0.1895 inches -
Internal Drive Style
High-torque -
End Application
Fuselage -
Thread Diameter
0.190 inches -
Grip Length
1.125 inches -
Thready Qty Per Inch (tpi)
32 -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Part Name Assigned By Controlling Agency
Screw-close tolerance, 100 degree countersunk, reduced head, hi-torque, nonmagnetic cres (125 ksi fsu) -
Material
Nickel alloy 718 -
Material Specification
Ams 5662 assn standard single material response -
Surface Treatment
Passivate -
Surface Treatment Specification
Qq-p-35 federal specification 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 5305-01-521-9549 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
ST3M557-3-20 | Boeing Company, The |
ST3M557-3-20 | Sps Technologies, Llc |
ST3M557-3-20 | Valley-todeco, Inc. |
HT4027-3-20 | Arconic Global Fasteners & Rings, |
ST3M557-3-20 | Saturn Fasteners Inc |
ST3M557-3-20 | Heartland Precision Fasteners, Inc. |
ST3M557-3-20 | Huck International, Inc. |
ST3M557-3-20 | Houston Precision Fasteners I, Lp |
ST3M557-3-20 | Sps Technologies, Llc |
ST3M557-3-20 | Camcar Llc |
ST3M557-3-20 | Fastener Innovation Technology, Inc. |
HT4027-3-20 | Sps Technologies, Llc |
11923-3-20 | Reid Products Inc. |
ST3M557-3-20 | Reid Products Inc. |
ST3M557-3-20 | West Coast Aerospace Inc |
ST3M557-3-20 | Hi-shear Corporation |
ST3M557-3-20 | Sps Technologies, Llc |
ST3M557-3-20 | Linread Ltd |
ST3M557 | Boeing Company, The |
ST3M557-3-20 | Twist Tite Mfg, Inc |