The Pin,piston, cataloged under National Stock Number 4310-00-277-3449, 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 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 22 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-277-3449 |
| Primary Part Number | HR4834PC68 |
| 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 |
| FSC Application Data | AIR COMPRESSOR |
| Body Style | RADII ENDS |
| Radius | 0.031 INCHES NOMINAL IN |
| Bore Style | STRAIGHT-THRU BORE |
| Material Document and Classification | MIL-S-890, CLASS AC MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.49970 INCHES MINIMUM AND 1.49990 INCHES MAXIMUM IN |
| Body Length | 5.6875 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Bore Diameter | 0.8750 INCHES NOMINAL IN |
| Material | STEEL |
| Metallic Hardness Rating | 45.0 MINIMUM ROCKWELL C AND 55.0 MAXIMUM ROCKWELL C |
| 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 |
|---|---|
| HR4834PC68 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 12267N PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| HR4834PC68 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 12267N | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| HL3330PC60 | 5/9 Secondary reference U.S. Government activity |
| HL4022PC60 | 5/9 Secondary reference U.S. Government activity |
| HR4834PC68 | 5/9 Secondary reference U.S. Government activity |
| HL5508PC75 | 5/9 Secondary reference U.S. Government activity |
| P1N46 | 5/9 Secondary reference U.S. Government activity |
| HL3965PC117 | 5/9 Secondary reference U.S. Government activity |
| W94045PC60 | 5/9 Secondary reference U.S. Government activity |
| HL4023PC60 | 5/9 Secondary reference U.S. Government activity |
| HL5517PC75 | 5/9 Secondary reference U.S. Government activity |
| HL2299PC60 | 5/9 Secondary reference U.S. Government activity |
| HL5253PC133 | 5/9 Secondary reference U.S. Government activity |
| HL5255PC133 | 5/9 Secondary reference U.S. Government activity |
| HL4984PC60 | 5/9 Secondary reference U.S. Government activity |
| HL4265PC117 | 5/9 Secondary reference U.S. Government activity |
| HL5512PC75 | 5/9 Secondary reference U.S. Government activity |
| HL5260PC133 | 5/9 Secondary reference U.S. Government activity |
| HL4261PC117 | 5/9 Secondary reference U.S. Government activity |
| 12267N | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-277-3449 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 4310-00-277-3449 has 2 manufacturer part numbers on file: HR4834PC68 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 12267N (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for HR4834PC68: FSC Application Data: AIR COMPRESSOR; Body Style: RADII ENDS; Radius: 0.031 INCHES NOMINAL IN; Bore Style: STRAIGHT-THRU BORE. 11 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.