The Washer,key, cataloged under National Stock Number 5310-00-732-8314, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-732-8314 |
| Primary Part Number | 7328314 |
| 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 | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.297 INCHES NOMINAL IN |
| Heat Treatment | OIL QUENCHED |
| Style Designator | KEY |
| Material Document and Classification | QQ0S0698 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 1.672 INCHES MINIMUM AND 1.703 INCHES MAXIMUM IN |
| Features Provided | CASEHARDENED |
| Material Thickness | 0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Material | STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.891 INCHES MINIMUM AND 0.922 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 |
|---|---|
| 7328314 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 73-1443 | 5/9 Secondary reference Anthony York Co |
| 5310007328314 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-00-732-8314 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 5310-00-732-8314 has 1 manufacturer part number on file: 7328314 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 2840-01-010-3898, 5340-01-418-6708, 5340-01-469-3766. Verify interchangeability with system specifications before substitution.
Key specifications for 7328314: Internal Straight Key Width: 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.297 INCHES NOMINAL IN; Heat Treatment: OIL QUENCHED; Style Designator: KEY. 11 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.