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MS21250-05008

MS21250-05008

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.

0.3110 inches minimum and 0.3120 inches maximum grip diameter, 0.082 inches nominal extended washer thickness, 0.428 inches minimum and 0.438 inches maximum extended washer diameter, 0.490 inches minimum and 0.510 inches maximum grip length, 1.099 inches nominal fastener length

NSN: 5306-00-990-6918
Federal Supply Group: Hardware and Abrasives
Federal Supply Classification: 5306 -Bolts
Item Identification Number: 00-990-6918
Requires Demilitarization?: Yes
INC: 15903
Assigment Date: Tue, Jan 1, 1963
Schedule B Code: 7318152000
Extended Washer Diameter: 0.428 inches minimum and 0.438 inches maximum
Extended Washer Thickness: 0.082 inches nominal
Fastener Length: 1.099 inches nominal
Grip Diameter: 0.3110 inches minimum and 0.3120 inches maximum
Grip Length: 0.490 inches minimum and 0.510 inches maximum
Hardness Rating
Head Height: 0.348 inches nominal
Head Style: double hexagon extended washer
Material Document And Classification
Material
Minimum Tensile Strength: 180000 pounds per square inch
Nominal Thread Diameter: 0.312 inches
Surface Treatment Document And Classification: unable to decode
Surface Treatment
Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.579 inches nominal
Thread Quantity Per Inch: 24
Thread Series Designator: unf
Width Between Flats: 0.367 inches minimum and 0.376 inches maximum

Related Parts

Part Number	Manufacturer
10114500	Nimikkeistokeskus Ncb Finland
5306009906918	E.c.a Etablissement Centrald'approvisionnement des Forces Armee

Frequently Asked Questions

What is the FSCG of the NSN 5306-00-990-6918?: The FSCG of the NSN 5306-00-990-6918 is 5306

Does the NSN 5306-00-990-6918 have a Schedule B code assigned?: Yes, the Schedule B code is 7318152000

Does NSN 5306-00-990-6918 require demilitarization?: Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5306-00-990-6918 contain precious materials?: Precious metal content is unknown

Does NSN 5306-00-990-6918 contain hazardous materials?: Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.