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 |
|---|---|
| 97499 | BELL HELICOPTER TEXTRON INC. |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 OR CADIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 3. ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AAVA | POINT DIAMETER | 0.189 INCHES MINIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| AAUM | LOCKING FEATURE | PATCH LOCKING FEATURE |
| AASB | FASTENER LENGTH | 0.838 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | END SHALL BE FLAT AND CHAMFERED PLUS INCOMPLETE THREAD NOT TO EXCEED TWO PITCHES. |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | A286 CONFORMING TO THE CHEMISTRY OF AMS5731, AMS5732, AMS5737, OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AAUJ | SPLINE MAJOR DIAMETER | 0.155 INCHES NOMINAL |
| AAJD | THREAD CLASS | 3A |
| ABQZ | INTERNAL DRIVE STYLE | TORX |
| ABQJ | POINT STYLE | FLAT |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQBC | MINIMUM TENSILE STRENGTH | 3180 POUNDS PER SQUARE INCH |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR PASSIVATE OVERALL |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AASA | THREAD LENGTH | 0.338 INCHES NOMINAL |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, CLOSE TOLERANCE. |
| AAUR | GRIP DIAMETER | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| ANEE | GRIP LENGTH | 0.500 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 32 |