5306-01-206-8405, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-01-206-8405

Federal Supply Class:
5306

National Item Identification Number:
012068405

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:

123WM10111-621	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
123WM10111-621	79RG9	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
FASTENER LENGTH	0.885 INCHES MINIMUM AND 0.915 INCHES MAXIMUM
HEAD DIAMETER	0.531 INCHES NOMINAL
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL THREAD CLASS	3B CONCENTRIC HOLE
INTERNAL THREAD DIRECTION	RIGHT-HAND CONCENTRIC HOLE
INTERNAL THREAD LENGTH	0.393 INCHES MINIMUM AND 0.413 INCHES MAXIMUM CONCENTRIC HOLE
MATERIAL	STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
NOMINAL THREAD SIZE	0.190 INCHES CONCENTRIC HOLE
SPECIAL FEATURES	TORQUE SLOT IN HEAD 0.080 INCH MIN,0.084 INCH MAX DIA
STYLE DESIGNATOR	CONCENTRIC HOLE THREADED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.361 INCHES MINIMUM AND 0.411 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNJF
THREAD SERIES	UNJF CONCENTRIC HOLE
THREADS PER INCH	32 CONCENTRIC HOLE

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