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 |
---|---|
19200 | U S ARMY ARMAMENT RESEARCH & DEVELOP |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
AASA | THREAD LENGTH | 0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM |
AATB | WIDTH BETWEEN FLATS | 0.219 INCHES NOMINAL |
ABQZ | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
AATN | SHOULDER DIAMETER | 0.135 INCHES MINIMUM FIRST SHOULDER AND 0.145 INCHES MAXIMUM FIRST SHOULDER |
AAJF | THREAD DIRECTION | RIGHT-HAND |
AATX | SHOULDER LENGTH | 0.068 INCHES MINIMUM FIRST SHOULDER AND 0.078 INCHES MAXIMUM FIRST SHOULDER |
AASU | HEAD HEIGHT | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
AHYM | NOMINAL THREAD DIAMETER | 0.112 INCHES |
AASB | FASTENER LENGTH | 0.473 INCHES MINIMUM AND 0.483 INCHES MAXIMUM |
THSD | THREAD SERIES DESIGNATOR | UNC |
AAJD | THREAD CLASS | 2A |
AASK | HEAD STYLE | HEXAGON |
SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
MATT | MATERIAL | COPPER ALLOY 240 OVERALL OR COPPER ALLOY 268 OVERALL OR COPPER ALLOY 360 OVERALL OR COPPER ALLOY 260 OVERALL OR COPPER ALLOY 342 OVERALL OR COPPER ALLOY 353 OVERALL OR COPPER ALLOY 230 OVERALL OR COPPER ALLOY 377 OVERALL |
STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
CMLP | THREAD QUANTITY PER INCH | 40 |