The Pin,piston, cataloged under National Stock Number 4130-00-288-0227, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4130-00-288-0227 |
| Primary Part Number | 5MF20-7081 |
| Item Name | Pin,piston |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Body Style | CHAMFERED ENDS |
| Material Document and Classification | QQ-S-763, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.74980 INCHES MINIMUM AND 0.75000 INCHES MAXIMUM IN |
| End Chamfer Angle in Deg | 45.0 |
| Body Length | 2.0312 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Material | STEEL COMP 302 |
| Metallic Hardness Rating | 90.0 MINIMUM ROCKWELL SUPERFICIAL 15-N |
| 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 |
|---|---|
| 5MF20-7081 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 5F20-1051-1 | 5/9 Secondary reference Carrier Corp |
NSN 4130-00-288-0227 is a Pin,piston, manufactured by Carrier Corp, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-00-288-0227 has 1 manufacturer part number on file: 5MF20-7081 (Carrier Corp).
Key specifications for 5MF20-7081: Body Style: CHAMFERED ENDS; Material Document and Classification: QQ-S-763, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE; Outside Diameter: 0.74980 INCHES MINIMUM AND 0.75000 INCHES MAXIMUM IN; End Chamfer Angle in Deg: 45.0. 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.