| Item Name | Worm Shaft |
| Federal Supply Group (FSG) | Mechanical Power Transmission Equipment |
| Federal Supply Class (FSC) | 3040 Miscellaneous Power Transmission Equipment |
| National Item Identification Number (NIIN) | 00-385-7731 (003857731) |
| NCB Code | USA (00) |
| Manufacturer | Army United States Department Of The |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAHN | END SIMILARITY | NOT IDENTICAL |
| ABHP | OVERALL LENGTH | 10.563 INCHES NOMINAL |
| BYFR | TEETH HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| CFFB | WORM THREAD QUANTITY | 1 |
| CFFC | WORM THREAD LEAD | 0.6253 INCHES NOMINAL |
| CFFD | WORM THREAD DIRECTION | RIGHT-HAND |
| CFFF | WORM PRESSURE ANGLE IN DEG | 14.500 |
| CFFG | WORM HELIX ANGLE | 4 DEG 34 MIN. |
| CFFK | WORM OUTSIDE DIAMETER | 2.8866 INCHES NOMINAL |
| CFFL | WORM PITCH DIAMETER | 2.4886 INCHES NOMINAL |
| CFFM | SHAFT HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| CFFN | WORM THREAD SECTION LENGTH | 3.750 INCHES NOMINAL |
| CFFP | WORM BODY LENGTH | 6.376 INCHES NOMINAL |
| CFFQ | WORM BODY TAPERED BEARING SURFACE END | NOT PROVIDED |
| CFFW | SHAFT LOCATION | BOTH ENDS OF WORM |
| CFFX | STRAIGHT UNTHREADED LENGTH | 1.187 INCHES NOMINAL SECOND END,SECOND PORTION |
| CFFX | STRAIGHT UNTHREADED LENGTH | 1.312 INCHES NOMINAL FIRST END,FIRST PORTION |
| CFFX | STRAIGHT UNTHREADED LENGTH | 1.687 INCHES NOMINAL SECOND END,FIRST PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 0.998 INCHES MINIMUM SECOND END,SECOND PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 1.000 INCHES MAXIMUM SECOND END,SECOND PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 1.3760 INCHES MINIMUM FIRST END,FIRST PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 1.3760 INCHES MINIMUM SECOND END,FIRST PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 1.3765 INCHES MAXIMUM FIRST END,FIRST PORTION |
| CFFY | STRAIGHT UNTHREADED SECTION DIAMETER | 1.3765 INCHES MAXIMUM SECOND END,FIRST PORTION |
| CFFZ | UNTHREADED SECTION KEYWAY WIDTH | 0.2465 INCHES MINIMUM SECOND END,SECOND PORTION |
| CFFZ | UNTHREADED SECTION KEYWAY WIDTH | 0.2485 INCHES MAXIMUM SECOND END,SECOND PORTION |
| CFGB | UNTHREADED SECTION KEYWAY DEPTH | 0.136 INCHES MINIMUM SECOND END,SECOND PORTION |
| CFGB | UNTHREADED SECTION KEYWAY DEPTH | 0.139 INCHES MAXIMUM SECOND END,SECOND PORTION |
| FEAT | SPECIAL FEATURES | BOTH ENDS CHAMFERED 0.0625 BY 45 DEG AND THREAD SURFACE FINISH 32AA |
| MATT | MATERIAL | STEEL |
| SFTT | SURFACE TREATMENT | OXIDE |
| ZZZV | FSC APPLICATION DATA | LAUNCHER,762-MM ROCKET,TRUCK MOUNTED,XM289 |
| Relevant Components for NSN - 3040-00-385-7731, 3040003857731 | ||||
| 3040-00-037-4479 (3040000374479) | 3010-01-283-8383 (3010012838383) | 3040-01-167-7076 (3040011677076) | 3040-01-607-0785 (3040016070785) | |
| 3020-00-173-7380 (3020001737380) | 3040-01-271-7503 (3040012717503) | 3040-00-690-2219 (3040006902219) | 3040-01-031-7475 (3040010317475) | |
| 3020-01-289-1372 (3020012891372) | 3040-01-171-1542 (3040011711542) | 3030-01-367-5013 (3030013675013) | 3020-01-281-7479 (3020012817479) | |
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