The Pin,piston, cataloged under National Stock Number 4310-00-277-3452, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 42 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-277-3452 |
| Primary Part Number | PC68 |
| Item Name | Pin,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| FSC Application Data | AIR COMPRESSOR |
| Body Style | CHAMFERED ENDS |
| Hole Arrangement Style | ONE HOLE THRU ONE SIDE OF BORE |
| Bore Style | INSIDE CHAMFER STRAIGHT-THRU BORE |
| Hole Depth | 0.2187 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-890, CLASS AC MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.18700 INCHES MINIMUM AND 1.18750 INCHES MAXIMUM IN |
| End Chamfer Angle in Deg | 45.0 |
| Body Length | 5.0000 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Bore Diameter | 0.7500 INCHES NOMINAL IN |
| Material | STEEL |
| Distance From Centerline of Hole to End of Pin | 0.625 INCHES NOMINAL IN |
| Hole Diameter | 0.2570 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 |
|---|---|
| PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 107333PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 107322PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 109305PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 109302PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 107314PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 107326PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 109310PC68 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| HL1859PC68 | 5/9 Secondary reference U.S. Government activity |
| 109310PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107314PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107333PC68 | 5/9 Secondary reference U.S. Government activity |
| PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| HL3705PC68 | 5/9 Secondary reference U.S. Government activity |
| 109305PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107305PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107327PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107303PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 235N | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 109303PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107328PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 107315PC68 | 5/9 Secondary reference U.S. Government activity |
| 107326PC68 | 5/9 Secondary reference U.S. Government activity |
| 107315PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 109305PC68 | 5/9 Secondary reference U.S. Government activity |
| 107302PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| PC68 | 5/9 Secondary reference U.S. Government activity |
| PC68 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-277-3452 is a Pin,piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-277-3452 has 8 manufacturer part numbers on file: PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 107333PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 107322PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 109305PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 109302PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions) and 3 more.
1 possible match (shared part number, not a government interchangeability claim): 5330-01-429-5033. Verify interchangeability with system specifications before substitution.
Key specifications for PC68: Countersink Angle in Deg: 45.0; FSC Application Data: AIR COMPRESSOR; Body Style: CHAMFERED ENDS; Hole Arrangement Style: ONE HOLE THRU ONE SIDE OF BORE. 15 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.