The Cover,access, cataloged under National Stock Number 2590-01-658-6987, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2590-01-658-6987 |
| Primary Part Number | 12423048-004 |
| Item Name | Cover,access |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Length | 76.2 MILLIMETERS NOMINAL MM |
| Usage Design | VEHICULAR |
| Surface Treatment Document and Classification | QQ-A-250/11 FED SPEC SINGLE TREATMENT RESPONSE |
| Heat Treatment | T-6 SOLUTION HEAT TREATED, ARTIFICALLY AGED |
| Cross-Sectional Shape Style | SPHERICAL RECESS |
| Thread Direction | RIGHT-HAND |
| Width | 76.2 MILLIMETERS NOMINAL MM |
| Material | ALUMINUM ALLOY 6061 |
| Body Thickness | 0.100 INCHES NOMINAL IN |
| 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 |
|---|---|
| 12423048-004 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12423048 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2590-01-658-6987 is a Cover,access, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-01-658-6987 has 1 manufacturer part number on file: 12423048-004 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 9515-01-658-7698. Verify interchangeability with system specifications before substitution.
Key specifications for 12423048-004: Length: 76.2 MILLIMETERS NOMINAL MM; Usage Design: VEHICULAR; Surface Treatment Document and Classification: QQ-A-250/11 FED SPEC SINGLE TREATMENT RESPONSE; Heat Treatment: T-6 SOLUTION HEAT TREATED, ARTIFICALLY AGED. 9 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.