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 |
|---|---|
| 81348 | FEDERAL SPECIFICATIONS PROMULGATED B |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| MATT | MATERIAL | STEEL COMP 302 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 316 OVERALL OR STEEL COMP 384 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNRC |
| AASK | HEAD STYLE | FILLISTER |
| AASL | HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 80.0 ROCKWELL B NOMINAL OVERALL |
| AAJD | THREAD CLASS | 3A |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| AASA | THREAD LENGTH | 1.000 INCHES NOMINAL |
| ASDB | WIDTH ACROSS FLATS | 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FF-S-86 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| AASB | FASTENER LENGTH | 1.250 INCHES NOMINAL |