|
|
|
National Stock Number:
5306-01-454-0493
Federal Supply Class:
5306
National Item Identification Number:
014540493
Description:
BOLT,SHEAR
Detail:
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.
|
Manufacturer Information:
| MS21250-20040 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
|
Techincal Specification:
| EXTENDED WASHER DIAMETER | 2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.269 INCHES NOMINAL | | FASTENER LENGTH | 4.280 INCHES NOMINAL | | GRIP DIAMETER | 1.2475 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM | | GRIP LENGTH | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM | | HEAD HEIGHT | 1.155 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 202000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 1.2500 INCHES | | WIDTH BETWEEN FLATS | 1.3125 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY II, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.760 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 12 | | THREAD SERIES DESIGNATOR | UNJF |
|
|