The Washer,key, cataloged under National Stock Number 5310-00-347-7630, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-347-7630 |
| Primary Part Number | 5181688 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.320 INCHES NOMINAL IN |
| External Prebent Key Length | 0.029 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.7006 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Material Thickness | 0.030 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN |
| External Prebent Key Width | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.251 INCHES MINIMUM AND 0.253 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 |
|---|---|
| 5181688 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5310-00-347-7630 is a Washer,key, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-347-7630 has 1 manufacturer part number on file: 5181688 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-598-7648. Verify interchangeability with system specifications before substitution.
Key specifications for 5181688: Distance From Centerline to Inside of Prebent Key: 0.320 INCHES NOMINAL IN; External Prebent Key Length: 0.029 INCHES NOMINAL IN; Overall Distance Including Keys: 0.7006 INCHES NOMINAL IN; Style Designator: KEY. 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.