The Weight,counterbalance, cataloged under National Stock Number 3040-01-449-8991, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Telephonics Corporation. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-449-8991 |
| Primary Part Number | 397529-1 |
| Item Name | Weight,counterbalance |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Telephonics Corporation |
| Status | ACTIVE |
| Mounting Hole Type and Quantity | 2 PLAIN |
| Mounting Hole Nominal Diameter | 0.171 INCHES IN |
| Material Document and Classification | MIL-S-22499, COMP 3, TYPE 1, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 397529-1 PRIMARY | Telephonics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 397529 | D/9 Drawing number reference only L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
| 397529-1 | 5/9 Secondary reference L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
NSN 3040-01-449-8991 is a Weight,counterbalance, manufactured by Telephonics Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-449-8991 has 1 manufacturer part number on file: 397529-1 (Telephonics Corporation).
Key specifications for 397529-1: Mounting Hole Type and Quantity: 2 PLAIN; Mounting Hole Nominal Diameter: 0.171 INCHES IN; Material Document and Classification: MIL-S-22499, COMP 3, TYPE 1, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 1.875 INCHES NOMINAL IN. 4 specifications are 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.