Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.
CAGE Information
Code | Company |
---|---|
94259 | WESTINGHOUSE ELECTRIC CORP BETTIS AT |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
CRTL | CRITICALITY CODE JUSTIFICATION | ZZZY |
AATX | SHOULDER LENGTH | 0.500 INCHES MINIMUM FIRST SHOULDER AND 0.502 INCHES MAXIMUM FIRST SHOULDER |
MATT | MATERIAL | STEEL COMP 303 OVERALL |
ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION |
AASL | HEAD DIAMETER | 0.375 INCHES NOMINAL |
CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-C-320 CLASS 2B FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
TEST | TEST DATA DOCUMENT | 81349-MIL-P-23199 SPECIFICATION |
AAJF | THREAD DIRECTION | RIGHT-HAND |
AASK | HEAD STYLE | FLAT CHAMFER |
AATN | SHOULDER DIAMETER | 0.249 INCHES MINIMUM FIRST SHOULDER AND 0.250 INCHES MAXIMUM FIRST SHOULDER |
THSD | THREAD SERIES DESIGNATOR | UNF |
AASU | HEAD HEIGHT | 0.188 INCHES NOMINAL |
SPCL | SPECIAL TEST FEATURES | SPECIAL QUALITY CONTROL TESTING |
SFTT | SURFACE TREATMENT | CHROMIUM OVERALL |
AASB | FASTENER LENGTH | 0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
AAJD | THREAD CLASS | 2A |
ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
CMLP | THREAD QUANTITY PER INCH | 32 |
AASA | THREAD LENGTH | 0.250 INCHES NOMINAL |
ASDB | WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL |