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National Stock Number: 5305-01-596-9638
Federal Supply Class: 5305
National Item Identification Number: 015969638
Description: SCREW,MACHINE
Detail: AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN./1.5 MM) OR LARGER, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), BUT MAY ALSO BE DESIGNED FOR EXTERNAL WRENCHING. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.
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Manufacturer Information:
BACS12FA3K14 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BMS 10-85, TY 1 CL A MFR REF SINGLE TREATMENT RESPONSE | SHANK SURFACE FINISH | 32.0 MICROINCHES | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.875 INCHES NOMINAL | THREAD QUANTITY PER INCH | 32 | THREAD SERIES DESIGNATOR | UNJF | BEARING SURFACE OF HEAD SURFACE FINISH | 63.0 MICROINCHES | EXTENDED WASHER THICKNESS | 0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM | EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM | FASTENER LENGTH | 0.875 INCHES NOMINAL | HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM | HEAD HEIGHT | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM | HEAD STYLE | ROUND EXTENDED WASHER | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | PROPRIETARY CHARACTERISTICS | PACS | NOMINAL THREAD DIAMETER | 0.190 INCHES | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE | SCREW MATERIAL | TITANIUM ALLOY UNS R56400 | SCREW SURFACE TREATMENT | ALUMINUM |
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