The Support,structural Component,veh, cataloged under National Stock Number 2540-01-646-6401, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-646-6401 |
| Primary Part Number | 12422257-002 |
| Item Name | Support,structural Component,veh |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Document Type | ENGINEERING DRAWING |
| Surface Treatment Document and Classification | FED SPEC TT-C-490 MIL STD 1ST TREATMENT RESPONSE OR MIL SPEC DOD-P 15328 MIL SPEC 1ST TREATMENT RESPONSE AND MIL DTL 53084 MIL STD 2ND TREATMENT RESPONSE OR MIL DTL 53039 MIL STD 3RD TREATMENT RESPONSE OR MIL DTL 64159 MIL STD 3RD TREATMENT RESPONSE AND FED SPEC TT-C-490 MIL STD 1ST TREATMENT RESPONSE OR MIL SPEC DOD-P 15328 MIL SPEC 1ST TREATMENT RESPONSE AND MIL 53022 MIL STD 2ND TREATMENT RESPONSE AND MIL DTL 53030 MIL STD 2ND TREATMENT RESPONSE OR MIL PRF 32348 MIL STD 2ND TREATMENT RESPONSE AND MIL DTL 53039 MIL STD 3RD TREATMENT RESPONSE OR MIL DTL 64159 MIL STD 3RD TREATMENT RESPONSE |
| Mounting Method | BOLTED |
| Mounting Position | FRONT AND LEFT SIDE AND REAR AND RIGHT FRONT |
| Heat Treatment | COLD DRAWN AND HOT ROLLED |
| Material Document and Classification | ASTM A500,GRADE C ASSN STD 1ST MATERIAL RESPONSE AND ASTM A500,GRADE C ASSN STD 2ND MATERIAL RESPONSE AND ASTM A500,GRADDE 3 ASSN STD 3RD MATERIAL RESPONSE AND ASTM A572/A572M,GRADE 50 ASSN STD 4TH MATERIAL RESPONSE AND ASTMASTM A108,GRADE 1018 ASSN STD 5TH MATERIAL RESPONSE |
| Mounting Hole Diameter | 30.0 MILLIMETERS NOMINAL MM |
| Vehicle Identification Designator | M1085A1P2 |
| Surface Treatment | PHOSPHATE ZINC AND PRIMER-LEAD AND HEXAVALENT CHROMIUM FREE AND POLYURETHANE PAINT-LEAD,CADMIUM AND HEXAVALENT CHROMIUM FREE AND CHEMICAL AND PRIMER-HEXAVALENT CHROMIUM FREE AND PRIMER AND PAINT OR PHOSPHATE ZINC AND CARC (CHEMICAL AGENT RESISTANT COATING) AND PAINT AND CHEMICAL AND PRIMER-HEXAVALENT CHROMIUM FREE |
| Material | STEEL |
| Mounting Hole Type | PLAIN AND THRU HOLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 12422257-002 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12422257 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2540-01-646-6401 is a Support,structural Component,veh, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-646-6401 has 1 manufacturer part number on file: 12422257-002 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12422257-002: Document Type: ENGINEERING DRAWING; Surface Treatment Document and Classification: FED SPEC TT-C-490 MIL STD 1ST TREATMENT RESPONSE OR MIL SPEC DOD-P 15328 MIL SPEC 1ST TREATMENT RESPONSE AND MIL DTL 53084 MIL STD 2ND TREATMENT RESPONSE OR MIL DTL 53039 MIL STD 3RD TREATMENT RESPONSE OR MIL DTL 64159 MIL STD 3RD TREATMENT RESPONSE AND FED SPEC TT-C-490 MIL STD 1ST TREATMENT RESPONSE OR MIL SPEC DOD-P 15328 MIL SPEC 1ST TREATMENT RESPONSE AND MIL 53022 MIL STD 2ND TREATMENT RESPONSE AND MIL DTL 53030 MIL STD 2ND TREATMENT RESPONSE OR MIL PRF 32348 MIL STD 2ND TREATMENT RESPONSE AND MIL DTL 53039 MIL STD 3RD TREATMENT RESPONSE OR MIL DTL 64159 MIL STD 3RD TREATMENT RESPONSE; Mounting Method: BOLTED; Mounting Position: FRONT AND LEFT SIDE AND REAR AND RIGHT FRONT. 11 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.