The Piston and Rod Assembly, cataloged under National Stock Number 1025-01-115-3130, is classified within Federal Supply Class 1025 (Guns, Over 150mm Through 200mm) of the Weapons group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1025-01-115-3130 |
| Primary Part Number | 10941039 |
| Item Name | Piston and Rod Assembly |
| FSC / FSG | 1025 / 10 — Guns, Over 150mm Through 200mm |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF PISTON; MATERIAL,STEEL 1045,SPEC QQ-S-631; HARDNESS,ROCKWELL C30-36; SURFACE TREAT,BRONZEOVERLAY,SPEC MIL-STD-1261,CLASS 2; AND ROD; MATERIAL,STEEL ALLOY 4140,8640,OR 8740 ASTM-A322 OR ASTM-A331,OR STEEL ALLOY FORGING 4140,8640,OR 8740,GRADE D,SPEC MIL-S-46172; HARDNESS,ROCKWELL C30-35; SURFACE TREAT,HARD CHROME PLATE,SPEC QQ-C-320,CLASS 2B; 35.190 IN. OVERALLLG.; 1.620 IN. OVERALL DIAMETER IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10941039 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 1025-01-115-3130 is a Piston and Rod Assembly, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 1025, Guns, Over 150mm Through 200mm. Status: active.
NSN 1025-01-115-3130 has 1 manufacturer part number on file: 10941039 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10941039: General Characteristics Item Description: CONSISTS OF PISTON; MATERIAL,STEEL 1045,SPEC QQ-S-631; HARDNESS,ROCKWELL C30-36; SURFACE TREAT,BRONZEOVERLAY,SPEC MIL-STD-1261,CLASS 2; AND ROD; MATERIAL,STEEL ALLOY 4140,8640,OR 8740 ASTM-A322 OR ASTM-A331,OR STEEL ALLOY FORGING 4140,8640,OR 8740,GRADE D,SPEC MIL-S-46172; HARDNESS,ROCKWELL C30-35; SURFACE TREAT,HARD CHROME PLATE,SPEC QQ-C-320,CLASS 2B; 35.190 IN. OVERALLLG.; 1.620 IN. OVERALL DIAMETER IN. 1 specification is 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.
NSN 1025-01-115-3130 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.