Part Number
Part Number:
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.
CAGE Information
| Code |
Company |
| 80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| ABQZ |
INTERNAL DRIVE STYLE |
RECESSED TYPE I |
| CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| MATT |
MATERIAL |
ALUMINUM ALLOY OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.2500 INCHES |
| AASB |
FASTENER LENGTH |
1.737 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| AASA |
THREAD LENGTH |
0.425 INCHES NOMINAL |
| AASL |
HEAD DIAMETER |
0.108 INCHES MINIMUM AND 0.118 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
1.312 INCHES NOMINAL |
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