The Washer,key, cataloged under National Stock Number 5310-01-152-4738, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-152-4738 |
| Primary Part Number | 12286991-3 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.212 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.130 INCHES NOMINAL IN |
| Style Designator | 90 DEGREE LOCKING KEY |
| Outside Diameter | 0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN |
| Material Thickness | 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| External Prebent Key Angle | 90.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Internal Key Quantity | 0 |
| Angle Between External Keys | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| Hole Diameter | 0.203 INCHES MINIMUM AND 0.208 INCHES MAXIMUM 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 |
|---|---|
| 12286991-3 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5310011524738 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-01-152-4738 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 5310-01-152-4738 has 1 manufacturer part number on file: 12286991-3 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12286991-3: Distance From Centerline to Inside of Prebent Key: 0.212 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN; External Prebent Key Length: 0.130 INCHES NOMINAL IN; Style Designator: 90 DEGREE LOCKING KEY; Outside Diameter: 0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN. 12 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.