National Stock Number (NSN) Output Data
NSN:
NIIN:
Item Name:
SCREW , CLOSE TOLERANCE
Definition:
A SCREW, MACHINE OR SCREW, CAP, SOCKET HEAD WHOSE UNTHREADED PORTION IS OF SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001 IN.) (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS (1.000 IN.) (25 MM) OR LESS IN DIAMETER. ITEMS OVER (1.000 IN.) (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015 IN.) (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001 IN.) (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 DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER. IT IS NOT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.
Reference/Part Number
CAGE Information
| Code |
Company |
| 17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
| 26512 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 97928 |
HUCK INTL INC |
| 73197 |
HI-SHEAR CORPORATION |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
| 92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| 80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| FEAT |
SPECIAL FEATURES |
DRY FILM LUBRICANT SURFACE TREATMENT |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES BEARING SURFACE OF HEAD |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AASA |
THREAD LENGTH |
0.410 INCHES MINIMUM AND 0.457 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
3A |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| ANEE |
GRIP LENGTH |
1.250 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| ZZZK |
SPECIFICATION/STANDARD DATA |
26512-GB511J PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| AASL |
HEAD DIAMETER |
0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
1.660 INCHES MINIMUM AND 1.707 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| MATT |
MATERIAL |
TITANIUM ALLOY UNS R54520 OVERALL |
| ABQZ |
INTERNAL DRIVE STYLE |
HIGH-TORQUE |
| AASK |
HEAD STYLE |
PAN |
Similar Parts
BM21009-4-20 ,
BM21009420 ,
5305-01-043-5735 ,
5305010435735 ,
010435735
,
GB511J4-20 ,
T151-4-20 ,
HT193LB4-20 ,
67077-4-20 ,
HT8099-4-20 ,
BM21009-4-20 ,
NAS1578V4H20 ,
BM21009-4-20 ,
T151-4-20 ,
HT193LB4-20 ,
67077-4-20 ,