The Roller Assembly, cataloged under National Stock Number 1740-01-140-7581, is classified within Federal Supply Class 1740 (Airfield Specialized Trucks and Trailers) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1740-01-140-7581 |
| Primary Part Number | 556AS303-2 |
| Item Name | Roller Assembly |
| FSC / FSG | 1740 / 17 — Airfield Specialized Trucks and Trailers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| General Characteristics Item Description | RUBBER MIL-R-6855,CLASS 2,TYPE A; 1.250 IN. ID; 1.750 IN. MIN AND 1.780 IN. MAX OD; 4.840 IN. MIN AND 4.900 IN. MAX OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 556AS303-2 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 1740-01-140-7581 is a Roller Assembly, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 1740, Airfield Specialized Trucks and Trailers. Status: active.
NSN 1740-01-140-7581 has 1 manufacturer part number on file: 556AS303-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 556AS303-2: General Characteristics Item Description: RUBBER MIL-R-6855,CLASS 2,TYPE A; 1.250 IN. ID; 1.750 IN. MIN AND 1.780 IN. MAX OD; 4.840 IN. MIN AND 4.900 IN. MAX OD IN. 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.
NSN 1740-01-140-7581 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.