The Washer,spring Tension, cataloged under National Stock Number 5310-00-532-9012, is classified within Federal Supply Class 5310 (Nuts and Washers) 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-532-9012 |
| Primary Part Number | 5329012 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| Outside Diameter | 4.750 INCHES NOMINAL IN |
| Material Thickness | 0.134 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 3.312 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 |
|---|---|
| 5329012 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 0A320 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-532-9012 is a Washer,spring Tension, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-532-9012 has 1 manufacturer part number on file: 5329012 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 5329012: Overall Height: 0.312 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN; Hardness Rating: 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM; Outside Diameter: 4.750 INCHES NOMINAL IN; Material Thickness: 0.134 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.