The Washer,flat, cataloged under National Stock Number 5310-00-199-6009, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 38 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-199-6009 |
| Primary Part Number | 187685PC198 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Overall Diameter | 1.875 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.281 INCHES NOMINAL IN |
| Thickness | 0.062 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 |
|---|---|
| 187685PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185414PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185438PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188085PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187682PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188405PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188082PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187700PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185413PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187681PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188487PC198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 166007-198 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 188085PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187681PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185414PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188081PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185413PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188082PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187682PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185438PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188085PC198 | 5/9 Secondary reference Ingersoll Rand Co |
| CV9S4902-025PC198 | 3/2 Design control — primary reference U.S. Government activity |
| 187682PC198 | 5/9 Secondary reference Ingersoll Rand Co |
| 166007-198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188405PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187685PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188406PC198 | 5/9 Secondary reference U.S. Government activity |
| 185414PC198 | 5/9 Secondary reference U.S. Government activity |
| CV31S4902-335123PC198 | 3/2 Design control — primary reference U.S. Government activity |
| CV9S4902-119PC198 | 3/2 Design control — primary reference U.S. Government activity |
| 187700PC198 | 5/9 Secondary reference Ingersoll Rand Co |
| 188406PC198 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 5310-00-199-6009 is a Washer,flat, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-199-6009 has 12 manufacturer part numbers on file: 187685PC198 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 185414PC198 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 185438PC198 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 188085PC198 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 187682PC198 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions) and 7 more.
Key specifications for 187685PC198: Overall Diameter: 1.875 INCHES NOMINAL IN; Material Document and Classification: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.