The Washer,flat, cataloged under National Stock Number 5310-01-473-5666, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-473-5666 |
| Primary Part Number | HN152-1101 PART NO. 37 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 2.750 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.906 INCHES NOMINAL IN |
| Thickness | 0.125 INCHES NOMINAL 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 |
|---|---|
| HN152-1101 PART NO. 37 PRIMARY | Naval Sea Systems Command (USA) |
| HN152-1145 PART NO. 48 | Naval Sea Systems Command (USA) |
| HN152-1102 PART NO. 11 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2-3/4 OD X 29/3 2 ID X 1/8 THK | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| HN152-1145 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5310-01-473-5666 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-473-5666 has 3 manufacturer part numbers on file: HN152-1101 PART NO. 37 (Naval Sea Systems Command), HN152-1145 PART NO. 48 (Naval Sea Systems Command), HN152-1102 PART NO. 11 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 5342-01-474-3659, 2040-01-475-1283, 2040-01-475-1286. Verify interchangeability with system specifications before substitution.
Key specifications for HN152-1101 PART NO. 37: Overall Diameter: 2.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: USED ON THE DOUBLE HINGED BALLISTIC DOORS. 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.