The Pin,piston, cataloged under National Stock Number 2810-00-293-3770, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-293-3770 |
| Item Name | Pin,piston |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| Body Style | CHAMFERED ENDS |
| Bore Style | INSIDE CHAMFER AND COUNTERBORED |
| Material Document and Classification | AMS 6274 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.12430 INCHES MINIMUM AND 1.12460 INCHES MAXIMUM IN |
| Counterbore Depth | 0.750 INCHES NOMINAL IN |
| End Chamfer Angle in Deg | 45.0 |
| Counterbore Diameter | 0.842 INCHES MINIMUM AND 0.843 INCHES MAXIMUM IN |
| Body Length | 4.4350 INCHES MINIMUM AND 4.4400 INCHES MAXIMUM IN |
| Casehardening Indicator | CASEHARDENED |
| Bore Diameter | 0.8300 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM IN |
| Material | STEEL COMP 8620 |
| Metallic Hardness Rating | 73.0 MINIMUM ROCKWELL SUPERFICIAL 30-N |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 60403 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2810-00-293-3770 is a Pin,piston, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5830-00-939-8952, 1680-01-354-6945, 5325-01-438-3678. Verify interchangeability with system specifications before substitution.
Key specifications for 2810-00-293-3770: Countersink Angle in Deg: 45.0; Body Style: CHAMFERED ENDS; Bore Style: INSIDE CHAMFER AND COUNTERBORED; Material Document and Classification: AMS 6274 ASSN STD SINGLE MATERIAL RESPONSE. 13 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.