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National Stock Number:
5305-01-176-9759
Federal Supply Class:
5305
National Item Identification Number:
011769759
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.
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Manufacturer Information:
| CA21070-4-14HS | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | GS520CK4-14 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.477 INCHES MINIMUM AND | | 0.636 INCHES MAXIMUM | | FASTENER LENGTH | 1.607 INCHES MINIMUM AND | | 1.627 INCHES MAXIMUM | | MATERIAL | STEEL COMP 8740 OR | | STEEL COMP 4140 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OR | | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.394 INCHES MINIMUM AND | | 0.404 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.141 INCHES MINIMUM AND | | 0.143 INCHES MAXIMUM | | MATERIAL ACCOMMODATED THICKNESS | 0.247 INCHES MINIMUM AND | | 0.250 INCHES MAXIMUM | | SPECIAL FEATURES | HOLE IN THREADED END FOR PLUG AT 0.112 DIA. AND 0.035 IN. TO 0.045 IN. WIDE BY 0.024 IN. TO 0.034 IN. DEEP SPLINES AT 120 DEGREES APART |
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