The Shield Air Power Unit, cataloged under National Stock Number 2530-00-740-9504, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track 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 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-740-9504 |
| Primary Part Number | 7409504 |
| Item Name | Shield Air Power Unit |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CARBON,SAE 1009 OR 1016,0.120 IN. THK,7 IN. W,22.375 IN. LG WITH 3 IN. RADIUS BEND ON @EACH END,4 HOLES 0.406 IN. DIA,CLEAN PER TT-C-490 SPEC,PRIME PER TT-P-636 SPEC,ENAMEL OD PER TT-E-529 SPEC IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 7409504 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 997179R2 | 3/2 Design control — primary reference U.S. Government activity |
| 99747R1 | 5/9 Secondary reference U.S. Government activity |
| KC6414 | 5/9 Secondary reference Diamond Reo Truck Co |
NSN 2530-00-740-9504 is a Shield Air Power Unit, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-740-9504 has 1 manufacturer part number on file: 7409504 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7409504: General Characteristics Item Description: STEEL,CARBON,SAE 1009 OR 1016,0.120 IN. THK,7 IN. W,22.375 IN. LG WITH 3 IN. RADIUS BEND ON @EACH END,4 HOLES 0.406 IN. DIA,CLEAN PER TT-C-490 SPEC,PRIME PER TT-P-636 SPEC,ENAMEL OD PER TT-E-529 SPEC IN; Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL; End Item Identification: 5-TON (M818, M931) TRACTOR TRUCK, 5-TON 6X6 5-TON DUMP TRUCK (M929,M930). 5-TON DROPSIDE 6X6 (M813A1, M-923, M-925).. 2 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.