The Washer,recessed, cataloged under National Stock Number 5310-00-945-0233, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Md Helicopters Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-945-0233 |
| Primary Part Number | 369A1224-3 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Md Helicopters Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | +4-8,FSCM 02731 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-763,CLASS 10 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.115 INCHES MINIMUM AND 3.135 INCHES MAXIMUM IN |
| Recess Depth | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Material Thickness | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 2.650 INCHES MINIMUM AND 2.655 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 |
|---|---|
| 369A1224-3 PRIMARY | Md Helicopters Inc (USA) |
| Reference | Meaning |
|---|---|
| 369A1224-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 369A1224-3 | 5/9 Secondary reference The Boeing Company |
NSN 5310-00-945-0233 is a Washer,recessed, manufactured by Md Helicopters Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-945-0233 has 1 manufacturer part number on file: 369A1224-3 (Md Helicopters Inc).
Key specifications for 369A1224-3: Overall Height: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Surface Treatment Document and Classification: +4-8,FSCM 02731 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Heat Treatment: AS FABRICATED; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM. 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.