The Washer,lock, cataloged under National Stock Number 5310-01-217-4645, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-217-4645 |
| Primary Part Number | 004-003005-087 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 90.0 ROCKWELL B MINIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-B-750 FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.853 INCHES MAXIMUM IN |
| Material Thickness | 0.281 INCHES MINIMUM IN |
| Nondefinitive Spec/std Data | E CLASS AND 2 STYLE |
| Color | YELLOW OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | COPPER ALLOY 510 OR TIN ALLOY 425 OVERALL |
| Hole Diameter | 1.144 INCHES MINIMUM AND 1.172 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 |
|---|---|
| 004-003005-087 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| Reference | Meaning |
|---|---|
| FF-W-84 | 4/1 Identification reference U.S. Government activity |
| NASM35338-111 | 3/2 Design control — primary reference U.S. Government activity |
| MS35338-111 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-217-4645 is a Washer,lock, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-217-4645 has 1 manufacturer part number on file: 004-003005-087 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).
Key specifications for 004-003005-087: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 90.0 ROCKWELL B MINIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-B-750 FED SPEC 1ST MATERIAL RESPONSE OVERALL. 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.