5305-01-442-1256, SCREW ASSEMBLY,PANEL

5340-01-442-1257 CAP,PROTECTIVE,DUST AND MOISTURE

National Stock Number:
5305-01-442-1256

Federal Supply Class:
5305

National Item Identification Number:
014421256

Description:
SCREW ASSEMBLY,PANEL

Detail:
A HEADED, THREADED FASTENING DEVICE OVER WHICH MAY BE ASSEMBLED; (1) A STAND-OFF; (2) A FLANGED BUSHING WITH WASHER(S) AND/OR A SHOULDERED BUSHING WITHOUT A FLANGE, OR IT MAY HAVE AN INTERNALLY THREADED SLEEVE THAT IS AN INTEGRAL PART OF THE SCREW; A WASHER AND AN EXTERNALLY THREAD SELF-LOCKING BUSHING THAT IS DRIVEN BY AN INSERTED DRIVER. ATTACHED TO PANEL BY THREADED BUSHING OR BY FLARING END OF STAND-OFF, OR BUSHING. USED IN CONJUNCTION WITH A SPEED NUT, NUT PLATE, OR DRIVEN INTO A THREADED HOLE IN THE ITEM THAT THE PANEL IS FASTENED TO. MAY BE SPRING LOADED.

Manufacturer Information:

3M869	76301	THE BOEING COMPANY
3M869-3C4	0HDW7	HUCK INTERNATIONAL, INC.
3M869-3C4	17446	HUCK INTERNATIONAL, INC
3M869-3C4	58998	FASTENER INNOVATION TECHNOLOGY, INC.
CS3047-3C4	58998	FASTENER INNOVATION TECHNOLOGY, INC.
3M869-3C4	76301	THE BOEING COMPANY
HSG7900-3C4	0HDW7	HUCK INTERNATIONAL, INC.
HSG7900-3-C-4	17446	HUCK INTERNATIONAL, INC
HSG7900-3C4	97928	HUCK INTL INC

Techincal Specification:

FASTENER LENGTH	0.975 INCHES MINIMUM AND 1.005 INCHES MAXIMUM
HEAD HEIGHT	0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
HEAD STYLE	HEXAGON
INTERNAL DRIVE STYLE	SLOT
MATERIAL ACCOMMODATED THICKNESS	0.267 INCHES MINIMUM AND 0.277 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTMA493 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING
MATERIAL	STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 SPRING
MATERIAL	STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 384 OR STEEL COMP 385 FASTENER
MATERIAL	STEEL COMP 304 STAND-OFF
NOMINAL THREAD DIAMETER	0.190 INCHES
WIDTH BETWEEN FLATS	0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.410 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	32

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