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 |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS A574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| ASDB | WIDTH ACROSS FLATS | 0.250 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNRC |
| AASU | HEAD HEIGHT | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| MATT | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| AAJD | THREAD CLASS | 3A |
| SFTT | SURFACE TREATMENT | ALUMINUM FASTENER AND ZINC FASTENER AND CHROMATE FASTENER OR CHROMATE FASTENER |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| CQBC | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488 TY 2 CL 3 MIL SPEC 1ST TREATMENT RESPONSE FASTENER OR MIL-C-87115 CL 3 MIL SPEC 2ND TREATMENT RESPONSE FASTENER |
| MATT | MATERIAL | STEEL UNS K03104 FASTENER |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AASL | HEAD DIAMETER | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | STRIP THREADS OR PELLET THREADS OR PATCH THREADS |
| AASA | THREAD LENGTH | 0.889 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| CQFM | HARDNESS RATING | 37.0 ROCKWELL C MINIMUM FASTENER AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| AASB | FASTENER LENGTH | 1.000 INCHES NOMINAL |