The Washer,key, cataloged under National Stock Number 5310-00-752-4138, 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 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-752-4138 |
| Primary Part Number | 7524138 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.375 INCHES NOMINAL IN |
| Overall Distance Including Keys | 5.750 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 5.219 INCHES NOMINAL IN |
| Material Thickness | 0.094 INCHES NOMINAL IN |
| External Key Quantity | 15 |
| Internal Prebent Key Length | 0.250 INCHES NOMINAL IN |
| External Prebent Key Width | 0.375 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 4.781 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 |
|---|---|
| 7524138 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-00-752-4138 is a Washer,key, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-752-4138 has 1 manufacturer part number on file: 7524138 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7524138: Internal Prebent Key Width: 0.375 INCHES NOMINAL IN; Overall Distance Including Keys: 5.750 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 5.219 INCHES NOMINAL IN. 10 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.