Part Number
Definition:
A STRAIGHT NONFLUID FITTING WITH WRENCHING FACILITIES ON ONE END AND EXTERNAL THREADS, OTHER THAN PIPE OR HOSE SERIES, ON THE OTHER END. IT HAS AN UNTHREADED THROUGH HOLE IN ITS AXIS WHICH MAY BE COUNTERSUNK AND/OR COUNTERBORED ON ONE OR BOTH ENDS. IT IS DESIGNED TO ACCOMMODATE A SHAFT, OR THE LIKE, OR USED TO REINFORCE A HOLE IN A BULKHEAD, OR THE LIKE. FOR SIMILAR ITEMS SPECIFICALLY DESIGNED FOR USE IN A STUFFING BOX, SEE PACKING NUT. FOR NONFLUID ITEMS WITH AN INTERNAL THREAD, SEE INSERT, SCREW THREAD; OR ADAPTER BUSHING. EXCLUDES REDUCER, BOSS; AND ITEMS DESIGNED TO ACCOMMODATE A TUBE OR TUBE FITTING.
CAGE Information
| Code | Company |
|---|---|
| 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC |
Federal Supply Class
Title
BUSHINGS, RINGS, SHIMS, AND SPAC
Inclusions:
INCLUDES EXTERNALLY THREADED RINGS; KEYED AND SERRATED LOCK RINGS; DEE RINGS; INSTRUMENT RETAINING RINGS; SHIM SETS AND ASSORTMENTS; PLATE SPACERS; RING SPACERS; SLEEVE SPACERS; STEPPED SPACERS; SPACER SETS AND ASSORTMENTS; SLEEVE BUSHINGS; MACHINE THREADED BUSHINGS; MACHINE THREADED PLUGS.
Exclusions:
EXCLUDES SLEEVE BEARINGS (FSC 3120); PIPE THREADED PLUGS (FSC 4730); PISTON RINGS (FSC 2520, 2805, 2810, 2815, 2825, 2990, 3040, 4310, AND 4820); RETAINING RINGS (FSC 5325); SHIM STOCK (FSC 9515).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| BQDD | COUNTERSINK LOCATION | WRENCHING END |
| FEAT | SPECIAL FEATURES | HEX WRENCHING FACILITY HAS 2 LOCKWIRE HOLES 0.047 IN. DIA |
| ACSL | WRENCHING FACILITY SHAPE | HEXAGON |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| CQJX | NOMINAL THREAD SIZE | 0.500 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| AJYR | SCREW THREAD LENGTH | 1.900 INCHES NOMINAL |
| ABNM | THICKNESS | 0.180 INCHES NOMINAL |
| AAJD | THREAD CLASS | 3A |
| AATA | COUNTERSINK ANGLE IN DEG | 90.0 |
| CBBL | FEATURES PROVIDED | COUNTERSUNK |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| MATT | MATERIAL | ALUMINUM ALLOY 6061 |
| ABHP | OVERALL LENGTH | 1.840 INCHES NOMINAL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8, T651 FED SPEC SINGLE MATERIAL RESPONSE |
| ADBD | COUNTERSINK DEPTH | 0.300 INCHES NOMINAL |
| BXBR | HOLE INSIDE DIAMETER | 0.256 INCHES MINIMUM AND 0.263 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 20 |