Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , SOCKET HEAD
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. THE HEAD HAS AN INTERNAL SOCKET OR MULTIPLE SPLINE FOR USE WITH AN INSERTED DRIVER. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES ITEMS WITH BEVEL (CONICAL) HEADS. SEE BOLT, INTERNAL WRENCHING. EXCLUDES SCREW, SHOULDER; AND SCREW, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 18876 | U S ARMY AVIATION AND MISSILE COMMAN |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASA | THREAD LENGTH | 1.230 INCHES MINIMUM AND 1.270 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | NAS1351-4 ASSN STD SINGLE MATERIAL RESPONSE OVERALL AND FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| ASDB | WIDTH ACROSS FLATS | 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| THSD | THREAD SERIES DESIGNATOR | UNRF |
| AASU | HEAD HEIGHT | 0.225 INCHES MINIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-26074 CL 1, GRADE 8, MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| CFSG | NONSTANDARD THREAD PITCH DIAMETER | +0.1897/+0.1928 INCHES |
| AASB | FASTENER LENGTH | 1.230 INCHES MINIMUM AND 1.270 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AASK | HEAD STYLE | FLAT FILLISTER |
| SFTT | SURFACE TREATMENT | NICKEL OVERALL |