5306-01-162-0017, BOLT,INTERNALLY RELIEVED BODY

5306-01-162-0016 BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-01-162-0017

Federal Supply Class:
5306

National Item Identification Number:
011620017

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:

12315741

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

CONCENTRIC HOLE DIAMETER	0.174 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
FASTENER LENGTH	0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
HEAD HEIGHT	0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
HEAD STYLE	HEXAGON
INTERNAL THREAD CLASS	2B COUNTERBORE
INTERNAL THREAD DIRECTION	RIGHT-HAND COUNTERBORE
INTERNAL THREAD LENGTH	0.250 INCHES MINIMUM COUNTERBORE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES
NOMINAL THREAD SIZE	0.438 INCHES COUNTERBORE
SPECIAL FEATURES	PAC SFTT IS FOR STL MATL ONLY
WIDTH BETWEEN FLATS	0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
STYLE DESIGNATOR	COUNTERBORE THREADED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	COPPER OR TIN OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF
THREAD SERIES	UNS COUNTERBORE
THREADS PER INCH	24 COUNTERBORE

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