The Pinch Roller Assy, cataloged under National Stock Number 3950-01-441-3376, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-441-3376 |
| Primary Part Number | 1223E1253 |
| Item Name | Pinch Roller Assy |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Overall Diameter | 48.000 INCHES NOMINAL IN |
| General Characteristics Item Description | MATERIAL IS STEEL AND TITANIUM; CONSISTS OF 17 SHAFTS BETWEEN A MATCHED PAIR OF SEMICIRCULAR MOUNTING PLATES; EACH SHAFT HAS TWO SLEEVES; THE PINCH ROLLER ARM FITS OVER ONE SLEEVE AND IS HELD IN PLACE BY A SPRING WHICH FITS OVER BOTH SLEEVES; THERE IS A STOP PIN FOR EACH OF THE 17 PINCH ROLLER ARMS |
| Material | STEEL |
| 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 |
|---|---|
| 1223E1253 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1223E1253 | 3/9 Design control — primary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3950-01-441-3376 is a Pinch Roller Assy, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-441-3376 has 1 manufacturer part number on file: 1223E1253 (Lockheed Martin Corporation Div Rms).
Key specifications for 1223E1253: Overall Diameter: 48.000 INCHES NOMINAL IN; General Characteristics Item Description: MATERIAL IS STEEL AND TITANIUM; CONSISTS OF 17 SHAFTS BETWEEN A MATCHED PAIR OF SEMICIRCULAR MOUNTING PLATES; EACH SHAFT HAS TWO SLEEVES; THE PINCH ROLLER ARM FITS OVER ONE SLEEVE AND IS HELD IN PLACE BY A SPRING WHICH FITS OVER BOTH SLEEVES; THERE IS A STOP PIN FOR EACH OF THE 17 PINCH ROLLER ARMS; Special Features: USED WITH CAPSTAN P/N 1223E1178; Part Name Assigned by Controlling Agency: PINCH ROLLER ASSEMBLY. 3 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.