The Caliper Assembly,disc Brake, cataloged under National Stock Number 3040-01-577-1252, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-577-1252 |
| Primary Part Number | 77A561739P001 |
| Item Name | Caliper Assembly,disc Brake |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Supplementary Features | ORGANIC FRICTION MATERIAL, PAINT AFTER GRIT BLASTING WITH AMERON 385 OT DEVOE 201, TWO COATS, TORQUE 13,700 LB IN AT 900 LB MAX LEVER FORCE LBS |
| Surface Treatment | PAINT |
| Special Markings | USING MFG. NAME, SYMBOL, TRADEMARK OR CAGE AND ITEM ID NUMBER, PERMANENT AND LEGIBLE |
| Material | IRON |
| Thread Size and Series/type Designator | 0 UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 77A561739P1 | Lockheed Martin Australia Pty Ltd (AUS) |
| 77A561739P001 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 77A561739P1 | 5/9 Secondary reference Lockheed Martin Australia Electronic Systems Pty Ltd |
NSN 3040-01-577-1252 is a Caliper Assembly,disc Brake, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-577-1252 has 2 manufacturer part numbers on file: 77A561739P1 (Lockheed Martin Australia Pty Ltd), 77A561739P001 (Lockheed Martin Corporation Div Rms).
Key specifications for 77A561739P001: Overall Height: 4.370 INCHES NOMINAL IN; Supplementary Features: ORGANIC FRICTION MATERIAL, PAINT AFTER GRIT BLASTING WITH AMERON 385 OT DEVOE 201, TWO COATS, TORQUE 13,700 LB IN AT 900 LB MAX LEVER FORCE LBS; Overall Length: 5.900 INCHES NOMINAL IN; Overall Width: 3.150 INCHES NOMINAL IN. 5 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.