The Pin,piston, cataloged under National Stock Number 2815-00-757-2220, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Cooper Machinery Services Llc. 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. 3 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 | 2815-00-757-2220 |
| Primary Part Number | M-1004 |
| Item Name | Pin,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Cooper Machinery Services Llc |
| Status | ACTIVE |
| Countersink Angle in Deg | 30.0 |
| Body Style | CHAMFERED ENDS |
| Bore Style | INSIDE CHAMFER STRAIGHT-THRU BORE |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 3.24950 INCHES NOMINAL IN |
| End Chamfer Angle in Deg | 45.0 |
| Body Length | 6.6870 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Bore Diameter | 2.1250 INCHES NOMINAL IN |
| Material | STEEL COMP 1020 |
| Metallic Hardness Rating | 57.0 MINIMUM ROCKWELL C AND 60.0 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 |
NSN 2815-00-757-2220 is a Pin,piston, manufactured by Cooper Machinery Services Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-757-2220 has 2 manufacturer part numbers on file: M-1004 (Cooper Machinery Services Llc), M-1004 (Striegel Supply, Inc. Dba Striegel Supply Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6610-00-868-6630, 5961-01-128-0978, 5915-01-225-6020. Verify interchangeability with system specifications before substitution.
Key specifications for M-1004: Countersink Angle in Deg: 30.0; Body Style: CHAMFERED ENDS; Bore Style: INSIDE CHAMFER STRAIGHT-THRU BORE; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE. 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.