5305-01-165-5591, SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-165-5591

Federal Supply Class:
5305

National Item Identification Number:
011655591

Description:
SCREW,CAP,HEXAGON HEAD

Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.

Manufacturer Information:

9439930	11862	GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
9439930	17769	L AND S INDUSTRIES INC
9439930	7X677	GENERAL MOTORS LLC

Techincal Specification:

EXTENDED WASHER DIAMETER	0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.040 INCHES MINIMUM
FASTENER LENGTH	0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM
HARDNESS RATING	25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.268 INCHES MAXIMUM
HEAD STYLE	HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OVERALL
MINIMUM TENSILE STRENGTH	120000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	92000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SPECIAL FEATURES	FLANGED EXTENDED WASHER
WIDTH BETWEEN FLATS	0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	G-6111-M,FSCM 11862 MFR REF ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	PHOSPHATE AND ZINC OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.430 INCHES MINIMUM AND 0.560 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNC

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