The Washer,key, cataloged under National Stock Number 5310-00-062-2378, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-062-2378 |
| Primary Part Number | 9937A44 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Internal Straight Key Width | 0.120 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.340 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 6357 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Material Thickness | 0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 8735 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.890 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 |
|---|---|
| 9937A44 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 9937A44 | 7/2 Vendor item drawing reference Goodrich Corporation |
| 9937A44 | 7/9 Vendor item drawing reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-00-062-2378 is a Washer,key, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-062-2378 has 1 manufacturer part number on file: 9937A44 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 9937A44: Internal Straight Key Width: 0.120 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.340 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: AMS 6357 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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.