The Washer,key, cataloged under National Stock Number 5310-00-708-8739, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-708-8739 |
| Primary Part Number | 7088739 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Internal Straight Key Width | 0.328 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 1.1562 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 3.812 INCHES MINIMUM AND 3.938 INCHES MAXIMUM IN |
| Material Thickness | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 2.635 INCHES MINIMUM AND 2.665 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 |
|---|---|
| 7088739 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5310007088739 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-708-8739 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 5310-00-708-8739 has 1 manufacturer part number on file: 7088739 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7088739: Internal Straight Key Width: 0.328 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 1.1562 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 3.812 INCHES MINIMUM AND 3.938 INCHES MAXIMUM IN. 8 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.