The Bracket,vehicular Components, cataloged under National Stock Number 2590-01-644-0665, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2590-01-644-0665 |
| Primary Part Number | 12491981-001 |
| Item Name | Bracket,vehicular Components |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Hole Quantity | 5 |
| Heat Treatment | HOT ROLLED |
| Overall Thickness | 6.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | ASTM A572/A572M,GRADE 60 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 12.0 MILLIMETERS NOMINAL FIRST HOLE MM |
| Mounting Hole Diameter | 12.0 MILLIMETERS NOMINAL SECOND HOLE MM |
| Mounting Hole Diameter | 13.7 MILLIMETERS NOMINAL FIFTH HOLE MM |
| Mounting Hole Diameter | 13.7 MILLIMETERS NOMINAL FOURTH HOLE MM |
| Mounting Hole Diameter | 13.7 MILLIMETERS NOMINAL THIRD HOLE MM |
| Vehicle Identification Designator | M1157 AND FMTV A1P2 |
| Vehicle Design Control Activity | 19207 |
| Material | STEEL |
| Mounting Hole Type | PLAIN AND THRU HOLE ALL HOLES |
| 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 |
|---|---|
| 12491981-001 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12491981 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2590-01-644-0665 is a Bracket,vehicular Components, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-01-644-0665 has 1 manufacturer part number on file: 12491981-001 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-644-1766. Verify interchangeability with system specifications before substitution.
Key specifications for 12491981-001: Mounting Hole Quantity: 5; Heat Treatment: HOT ROLLED; Overall Thickness: 6.0 MILLIMETERS NOMINAL MM; Material Document and Classification: ASTM A572/A572M,GRADE 60 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.