The Reaction Arm,special, cataloged under National Stock Number 4940-01-388-5164, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Unex Corp Div Hytorc Division Unex Corporation. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4940-01-388-5164 |
| Primary Part Number | SW90K |
| Item Name | Reaction Arm,special |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Unex Corp Div Hytorc Division Unex Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | 4150 STEEL; WEAR-SURFACES NYLON CLAD: SLEEVE-SHAPED WITH INTREGAL BRACKET; 3.125IN.H X 5.000IN.L; IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SW90K PRIMARY | Unex Corp Div Hytorc Division Unex Corporation (USA) |
| Reference | Meaning |
|---|---|
| SW90K | C/1 Advisory reference — outside the item-of-supply concept Titan Technologies International, Inc. |
| SW90K | 3/9 Design control — primary reference Titan Technologies International Inc |
NSN 4940-01-388-5164 is a Reaction Arm,special, manufactured by Unex Corp Div Hytorc Division Unex Corporation, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-388-5164 has 1 manufacturer part number on file: SW90K (Unex Corp Div Hytorc Division Unex Corporation).
Key specifications for SW90K: General Characteristics Item Description: 4150 STEEL; WEAR-SURFACES NYLON CLAD: SLEEVE-SHAPED WITH INTREGAL BRACKET; 3.125IN.H X 5.000IN.L; IN; Special Features: USED IN CONJUNCTION WITH P/N SW90A HYDRAULIC TORQUE WRENCH; PART OF A TOOL USED IN THE INSTALLATION AND REPAIR OF EQUIPMENT; End Item Identification: ASW/MSW MAIN SEA WATER PUMP; WEAPON SYSTEM CODE JG SEAWOLF CLASS SSN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.