Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , CLOSE TOLERANCE
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE UNTHREADED PORTION IS OF A SPECIFIED 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. 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. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS HAVING CLOSE TOLERANCE, AND FABRICATED FROM MATERIAL HAVING 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH, SEE BOLT, SHEAR. FOR ITEMS FABRICATED FROM MATERIAL HAVING LESS THAN 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH AND NOT HAVING A CLOSE TOLERANCE, SEE BOLT, MACHINE.
CAGE Information
| Code |
Company |
| 88044 |
AERONAUTICAL STANDARDS GROUP DEPT OF |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| MATT |
MATERIAL |
STEEL COMP 8740 OVERALL OR STEEL COMP 8630 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4037 OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.625 INCHES |
| AASB |
FASTENER LENGTH |
2.500 INCHES MINIMUM AND 2.547 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OVERALL OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| CSYM |
SURFACE FINISH |
250.0 MICROINCHES TOP OF HEAD |
| CMLP |
THREAD QUANTITY PER INCH |
18 |
| AAJD |
THREAD CLASS |
3A |
| CSYM |
SURFACE FINISH |
63.0 MICROINCHES GRIP |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASU |
HEAD HEIGHT |
0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| CSYM |
SURFACE FINISH |
125.0 MICROINCHES THREADS |
| AASA |
THREAD LENGTH |
0.922 INCHES MINIMUM AND 1.001 INCHES MAXIMUM |
| CSYM |
SURFACE FINISH |
63.0 MICROINCHES BEARING SURFACE OF HEAD |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| CQBC |
MINIMUM TENSILE STRENGTH |
125000 POUNDS PER SQUARE INCH |
| AASK |
HEAD STYLE |
HEXAGON |
| AATB |
WIDTH BETWEEN FLATS |
0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| CQFM |
HARDNESS RATING |
26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| AAUR |
GRIP DIAMETER |
0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
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