The Washer,key, cataloged under National Stock Number 5310-01-187-3923, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-187-3923 |
| Primary Part Number | 1881-252 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Wire Hole Diameter | 0.090 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Style Designator | INTERNAL PREBENT KEY |
| Material Document and Classification | AMS4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.270 INCHES NOMINAL IN |
| Material Thickness | 0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | ALUMINUM AND NICKEL AND COPPER ALLOY OVERALL |
| Hole Diameter | 1.005 INCHES MINIMUM AND 1.010 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 |
|---|---|
| 1881-252 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1881-252 | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-01-187-3923 is a Washer,key, manufactured by Goodrich Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-187-3923 has 1 manufacturer part number on file: 1881-252 (Goodrich Corporation).
Key specifications for 1881-252: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Wire Hole Diameter: 0.090 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN. 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.