The Washer,lock, cataloged under National Stock Number 5310-00-680-5557, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-680-5557 |
| Primary Part Number | 310-0075-00 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Hardness Rating | 90.0 ROCKWELL B NOMINAL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.165 INCHES MAXIMUM IN |
| Material Thickness | 0.015 INCHES MINIMUM IN |
| Hole Diameter | 0.088 INCHES MINIMUM 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 |
|---|---|
| 934118517 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 310-0075-00 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 118517 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 310-0075-000 | 5/9 Secondary reference Wrought Washer Mfg., Inc. |
NSN 5310-00-680-5557 is a Washer,lock, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-680-5557 has 3 manufacturer part numbers on file: 934118517 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 310-0075-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 118517 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
3 possible matches (shared part number, not a government interchangeability claim): 2520-00-824-0419, 1220-01-019-0006, 5331-01-511-1609. Verify interchangeability with system specifications before substitution.
Key specifications for 310-0075-00: Hardness Rating: 90.0 ROCKWELL B NOMINAL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.165 INCHES MAXIMUM IN; Material Thickness: 0.015 INCHES MINIMUM IN. 5 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.