Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.
CAGE Information
| Code | Company |
|---|---|
| 1W025 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASL | HEAD DIAMETER | 0.449 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AATX | SHOULDER LENGTH | 0.740 INCHES MINIMUM ALL SHOULDERS AND 0.760 INCHES MAXIMUM ALL SHOULDERS |
| MATT | MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| AAJD | THREAD CLASS | 3A |
| ABQZ | INTERNAL DRIVE STYLE | TORX |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 6AL-4VTITANIUMALLOYPERAMS4928 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS4967 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.2490 INCHES MINIMUM FIRST SHOULDER AND 0.2495 INCHES MAXIMUM FIRST SHOULDER |
| AASA | THREAD LENGTH | 0.425 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.175 INCHES MAXIMUM |
| CQBC | MINIMUM TENSILE STRENGTH | 5620 POUNDS PER SQUARE INCH |