Part Number
Definition:
A SCREW, MACHINE OR SCREW, CAP, SOCKET HEAD WHOSE UNTHREADED PORTION IS OF SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001 IN.) (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS (1.000 IN.) (25 MM) OR LESS IN DIAMETER. ITEMS OVER (1.000 IN.) (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015 IN.) (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001 IN.) (0.025 MM) BELOW THE MINIMUM SHANK DIAMETER, BUT NOT BELOW THE MINIMUM MAJOR DIAMETER FOR APPLICABLE CLASS OF FIT, AS SHOWN IN THE SCREW THREAD STANDARDS, FED STD H28 AND/OR OTHER NATIONALLY RECOGNIZED STANDARDS. THE HEAD IS DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER. IT IS NOT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.
CAGE Information
Code | Company |
---|---|
06950 | ALCOA GLOBAL FASTENERS INC. DBA ALCO |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
AGAV | END ITEM IDENTIFICATION | F18E/F |
THSD | THREAD SERIES DESIGNATOR | UNJF |
ANEE | GRIP LENGTH | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
AAJD | THREAD CLASS | 3A |
AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
CMLP | THREAD QUANTITY PER INCH | 28 |
AAJF | THREAD DIRECTION | RIGHT-HAND |
AASL | HEAD DIAMETER | 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM |
AASK | HEAD STYLE | OVAL COUNTERSUNK |
CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
CRTL | CRITICALITY CODE JUSTIFICATION | AGAV |
ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
AAUR | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.223 INCHES MINIMUM FIRST HOLE AND 1.233 INCHES MAXIMUM FIRST HOLE |
STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
AASB | FASTENER LENGTH | 1.329 INCHES MINIMUM AND 1.359 INCHES MAXIMUM |
MATT | MATERIAL | NICKEL ALLOY 718 OVERALL |
AASA | THREAD LENGTH | 0.469 INCHES NOMINAL |
SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM FIRST HOLE AND 0.075 INCHES MAXIMUM FIRST HOLE |