NSN 5305-01-521-9591
Close Tolerance Screw
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
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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 |
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