National Item Identification Number
01-256-5187
012565187
5306-01-256-5187
5306012565187
National Stock Number
Item Name
BOLT,SHEAR
Federal Supply Class
5306
Description
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.
Commercial and Government Entity Code (Supplier Data)
06725
17446
73197
0PTK6
SPS TECHNOLOGIES INC
5195 W 4700 S
SALT LAKE CITY
UT
84118
215-572-3331
06710
06725
06950
ALCOA GLOBAL FASTENERS INC
DIV CITY OF INDUSTRY OPERATIONS
13001 TEMPLE AVE
LA PUENTE
CA
91746
805-991-1270
17446
27624
Reference Numbers (Part Numbers)
AIC752-4H9
BM3326-4H9
BM3326-4H9
MB84-4H9
ST3M571-4H9
ST3M571-4H9
ST3M571-
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNF
0.250 INCHES
28
3A
RIGHT-HAND
0.443 INCHES MINIMUM AND
0.493 INCHES MA