The Washer,key, cataloged under National Stock Number 5310-01-175-6078, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-175-6078 |
| Primary Part Number | 1881-178A |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Internal Straight Key Width | 0.179 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.395 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-P-23377 MIL SPEC 1ST TREATMENT RESPONSE AND FED-STD-595 COLOR 17875 FED STD 2ND TREATMENT RESPONSE AND QQ-P-416 TY 2 CL 1 FED SPEC 3RD TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.560 INCHES NOMINAL IN |
| Material Thickness | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Surface Treatment | PRIMER AND ENAMEL AND CADMIUM OVERALL |
| Material | STEEL COMP 4130 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 1.020 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 |
|---|---|
| 1881-178A PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1881-178A | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-01-175-6078 is a Washer,key, manufactured by Goodrich Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-175-6078 has 1 manufacturer part number on file: 1881-178A (Goodrich Corporation).
Key specifications for 1881-178A: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Internal Straight Key Width: 0.179 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.395 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-P-23377 MIL SPEC 1ST TREATMENT RESPONSE AND FED-STD-595 COLOR 17875 FED STD 2ND TREATMENT RESPONSE AND QQ-P-416 TY 2 CL 1 FED SPEC 3RD TREATMENT RESPONSE OVERALL. 12 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.