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 |
56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
AASB |
FASTENER LENGTH |
4.064 INCHES NOMINAL |
CQBC |
MINIMUM TENSILE STRENGTH |
260000 POUNDS PER SQUARE INCH |
AAJD |
THREAD CLASS |
3A |
AASA |
THREAD LENGTH |
0.814 INCHES NOMINAL |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
AAUR |
GRIP DIAMETER |
0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM |
THSD |
THREAD SERIES DESIGNATOR |
UNF |
AASU |
HEAD HEIGHT |
0.464 INCHES NOMINAL |
ANEE |
GRIP LENGTH |
3.250 INCHES NOMINAL |
AATC |
EXTENDED WASHER DIAMETER |
0.820 INCHES MINIMUM AND 0.830 INCHES MAXIMUM |
ZZZP |
PURCHASE DESCRIPTION IDENTIFICATION |
56878-SPS-B-71320 |
AHYM |
NOMINAL THREAD DIAMETER |
0.438 INCHES |
ZZZK |
SPECIFICATION/STANDARD DATA |
56878-EWB-26 MANUFACTURERS STANDARD |
CMLP |
THREAD QUANTITY PER INCH |
20 |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
SPS-M-573 FSCM 56878 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
AATD |
EXTENDED WASHER THICKNESS |
0.083 INCHES NOMINAL |
MATT |
MATERIAL |
COBALT COMP MP-35-N OVERALL |
AATB |
WIDTH BETWEEN FLATS |
0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
AASK |
HEAD STYLE |
DOUBLE HEXAGON W/HOLE |
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