Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , INTERNAL WRENCHING
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO. 10 (0.190 IN.) (5 MM) OR LARGER. IT IS DESIGNED WITH AN INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE FOR USE WITH AN INTERNAL DRIVER. THE HEAD IS BEVELED (CONICAL) OR CYLINDRICAL IN SHAPE. ITEMS WITH CYLINDRICAL SHAPED HEADS MUST HAVE AN EXTERNALLY RELIEVED BODY. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. SEE ALSO SCREW, CAP, SOCKET HEAD. EXCLUDES SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; AND SCREW, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 81755 | LOCKHEED MARTIN CORPORATION DBA LOCK |
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASU | HEAD HEIGHT | 0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| AAJD | THREAD CLASS | 3A |
| 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 | 1.078 INCHES NOMINAL FIRST HOLE |
| AASK | HEAD STYLE | FLAT CHAMFER |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASA | THREAD LENGTH | 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.369 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| CQBC | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |
| ASDB | WIDTH ACROSS FLATS | 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| AASB | FASTENER LENGTH | 1.188 INCHES NOMINAL |