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Shear Bolt
Model MS21297-12076
Quick Information about MS21297-12076
3a thread class, right-hand , 1.173 inches thread length, 5.938 inches fastener length, spline extended washer head style, 0.600 inches head height
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Product Details
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NSN:5306-01-560-7687 (5306015607687)
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Thread Direction:Right-hand
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Thread Length:1.173 inches
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Fastener Length:5.938 inches
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Head Style:Spline extended washer
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Head Height:0.600 inches
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Extended Diameter:1.394 inches
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Extended Thickness:0.118 inches
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Grip Diameter:Between 0.748 inches and 0.749 inches
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Head Diameter:Between 0.797 inches and 0.812 inches
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Thread Diameter:0.750 inches
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Grip Length:Between 4.740 inches and 4.760 inches
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Thready (tpi):16
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Min. (psi):220000 pounds per square inch
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Hardness Rating:46.0 rockwell c and 50.0 rockwell c
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Surface Finish:32.0 microinches grip
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Surface Finish:32.0 microinches head
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Part Agency:Bolt tension steel 220ksi ftu 450 degrees f external wrenching spline drive flanged head
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Material Specification:Ams 6487 assn standard single material response
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Surface Specification:Mil-c-8837 type 2 class 3 military specification single treatment response
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Specification Data:Nas-21297 government specification
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Schedule B Code:7318152000
Classification
Bolts and bolts and their nuts or washers exported in the same shipment
Definition Shear Bolt
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
Part Identification
Part Materials
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