Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , SOCKET HEAD
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. THE HEAD HAS AN INTERNAL SOCKET OR MULTIPLE SPLINE FOR USE WITH AN INSERTED DRIVER. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES ITEMS WITH BEVEL (CONICAL) HEADS. SEE BOLT, INTERNAL WRENCHING. EXCLUDES SCREW, SHOULDER; AND SCREW, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 29372 | ALCOA GLOBAL FASTENERS INC. DBA ALCO |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CSYM | SURFACE FINISH | 32.0 MICROINCHES THREADS |
| AASB | FASTENER LENGTH | 1.570 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 8740 OVERALL OR STEEL COMP 4340 OVERALL |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| AASA | THREAD LENGTH | 0.315 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| CQFM | HARDNESS RATING | 50.0 ROCKWELL C MINIMUM OVERALL AND 58.0 ROCKWELL C MAXIMUM OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.521 INCHES MINIMUM FIRST HOLE AND 1.537 INCHES MAXIMUM FIRST HOLE |
| SFTT | SURFACE TREATMENT | CADMIUM HEAD AND CHROMATE HEAD |
| SFTT | SURFACE TREATMENT | PASSIVATE SPRING |
| AASK | HEAD STYLE | CROWNED HEXAGON |
| AAUM | LOCKING FEATURE | PELLET GRIP |
| SFTT | SURFACE TREATMENT | CADMIUM THREADS AND CHROMATE THREADS |
| AATB | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |