The Washer,shouldered, cataloged under National Stock Number 5310-01-172-5194, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-172-5194 |
| Primary Part Number | 7-311310174 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 6444 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.380 INCHES NOMINAL IN |
| Shoulder Diameter | 2.915 INCHES NOMINAL IN |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL COMP E52100 OVERALL |
| Hole Diameter | 2.3408 INCHES MINIMUM AND 2.3413 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 |
|---|---|
| 7-311310174 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-311310174 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5310-01-172-5194 is a Washer,shouldered, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-172-5194 has 1 manufacturer part number on file: 7-311310174 (The Boeing Company).
Key specifications for 7-311310174: Hardness Rating: 60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS 6444 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.380 INCHES NOMINAL IN; Shoulder Diameter: 2.915 INCHES NOMINAL IN. 7 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.