5306-99-834-7489, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-99-834-7489

Federal Supply Class:
5306

National Item Identification Number:
998347489

Description:
BOLT,INTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE.

Manufacturer Information:

MBEU185493

U1604

MARTIN-BAKER AIRCRAFT COMPANY LIMITED

Techincal Specification:

CONCENTRIC HOLE DEPTH	0.152 INCHES MINIMUM AND 0.162 INCHES MAXIMUM
CONCENTRIC HOLE DIAMETER	0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM
FASTENER LENGTH	0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
HEAD HEIGHT	0.129 INCHES MINIMUM AND 0.139 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON LONGITUDINAL HOLE
HOLE DIAMETER	0.063 INCHES NOMINAL
HOLE QUANTITY	3
HOLE TYPE	DRILLED
III PART NAME ASSIGNED BY CONTROLLING AGENCY	BOLT SETTING
NOMINAL THREAD DIAMETER	0.250 INCHES
SPECIAL FEATURES	0.195 IN. MAX UNDERCUT DIA
WIDTH BETWEEN FLATS	0.429 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
STYLE DESIGNATOR	CONCENTRIC HOLE UNTHREADED
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.400 INCHES NOMINAL
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF

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