Part Number
Definition:
A HIGH STRENGTH, 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH EXTERNALLY THREADED FASTENER DESIGNED FOR USE IN APPLICATIONS INVOLVING GREAT SHEAR STRESS. THE HEAD IS DESIGNED TO ACCOMMODATE AN EXTERNAL WRENCH OR DRIVER. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER, NOR IS IT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. THE UNTHREADED PORTION IS OF SPECIFIC GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001) OF AN INCH (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS ONE INCH (25 MM) OR LESS IN DIAMETER. ITEMS OVER ONE INCH (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015) OF AN INCH (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001) OF AN INCH (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. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. SEE BOLT, MACHINE AND BOLT, CLEVIS.
CAGE Information
| Code | Company |
|---|---|
| 06950 | ALCOA GLOBAL FASTENERS INC. DBA ALCO |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ANEE | GRIP LENGTH | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM |
| ANEE | GRIP LENGTH | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | NICKEL OVERALL AND CADMIUM OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| ZZZK | SPECIFICATION/STANDARD DATA | 56878-EWB26 MANUFACTURERS STANDARD |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| CQFM | HARDNESS RATING | 51.0 ROCKWELL C MINIMUM OVERALL AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| CQBC | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH |
| AAJD | THREAD CLASS | 3A |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| AASU | HEAD HEIGHT | 0.254 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL OR MIL-C-8837,TY 2,CL 3 MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR AMS 2416 ASSN STD 3RD TREATMENT RESPONSE OVERALL |
| AAUR | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP H11 OVERALL |
| AATD | EXTENDED WASHER THICKNESS | 0.042 INCHES NOMINAL |
| AASK | HEAD STYLE | DOUBLE HEXAGON W/HOLE |