National Item Identification Number

01-510-4658
015104658
5306-01-510-4658
5306015104658

National Stock Number

Item Name

BOLT,CLOSE TOLERANCE

Federal Supply Class

5306

Description

An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.

Commercial and Government Entity Code (Supplier Data)

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1RC86

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ALCOA GLOBAL FASTENERS INC
DBA ALCOA FASTENING SYSTEM DIV CITY
135 N UNRUH AVE
LA PUENTE
CA
91744
805-991-1270

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56878

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81205

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Reference Numbers (Part Numbers)

BACB30FA5R11P
BACB30FA5R11P
BACB30FA5R11P

Required Categories

THREAD SERIES DESIGNATOR
THREAD QUANTITY PER INCH
THREAD CLASS
THREAD LENGTH;

Required Description

UNJC
24
3A
5.500 INCHES NOMINAL
PLASTIC POLYAMIDE LOCKING FEATURE
MIL-F-687