The Spacer,special Shaped, cataloged under National Stock Number 5365-01-421-9553, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-421-9553 |
| Primary Part Number | 12373439 |
| Item Name | Spacer,special Shaped |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Thickness | 1.500 INCHES NOMINAL IN |
| Bolt Hole Diameter | 0.424 INCHES NOMINAL IN |
| Material Document and Classification | MIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | CHROMATE |
| Material | ALUMINUM ALLOY A356.0 |
| 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 |
|---|---|
| 12373439 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12373439 | 5/9 Secondary reference General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| 12373439 | C/1 Advisory reference — outside the item-of-supply concept General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc |
NSN 5365-01-421-9553 is a Spacer,special Shaped, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-421-9553 has 1 manufacturer part number on file: 12373439 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12373439: Overall Thickness: 1.500 INCHES NOMINAL IN; Bolt Hole Diameter: 0.424 INCHES NOMINAL IN; Material Document and Classification: MIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 4.500 INCHES NOMINAL IN. 5 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.