The Pin,piston, cataloged under National Stock Number 4130-00-278-9740, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Carrier Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4130-00-278-9740 |
| Primary Part Number | 5H40-1051 |
| Item Name | Pin,piston |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Body Style | PLAIN ENDS |
| Bore Style | INSIDE RADII STRAIGHT-THRU BORE |
| Outside Diameter | 1.00000 INCHES NOMINAL IN |
| Body Length | 2.7032 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Bore Diameter | 0.6875 INCHES NOMINAL IN |
| Material | STEEL |
| Bore Radius | 0.3438 INCHES NOMINAL 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 |
|---|---|
| 5H40-1051 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 5MH46-1029 PIEC | C/1 Advisory reference — outside the item-of-supply concept Carrier Corp |
| 4130PL0871011 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 280855260-5H40-1051 | 5/1 Secondary reference Noske-Kaeser Germany Gmbh |
| 5MH46-1029 PC 22C | C/1 Advisory reference — outside the item-of-supply concept Carrier Corp |
NSN 4130-00-278-9740 is a Pin,piston, manufactured by Carrier Corp, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-00-278-9740 has 1 manufacturer part number on file: 5H40-1051 (Carrier Corp).
Key specifications for 5H40-1051: Body Style: PLAIN ENDS; Bore Style: INSIDE RADII STRAIGHT-THRU BORE; Outside Diameter: 1.00000 INCHES NOMINAL IN; Body Length: 2.7032 INCHES NOMINAL IN. 8 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.