The Washer,lock, cataloged under National Stock Number 5310-00-209-0762, 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. Government technical data includes 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-209-0762 |
| Primary Part Number | 900268-03 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Style Designator | FLAT EXTERNAL TEETH |
| Material Document and Classification | FED STD 66,AISI C1050 THRU C1064 OR SAE 1050 THRU 1064 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.168 INCHES MINIMUM AND 0.176 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 |
|---|---|
| 900268-03 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2190-0010 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| MILW6986TYPEB | 4/1 Identification reference U.S. Government activity |
| MS35335-73 | 2/2 Government specification standardization U.S. Government activity |
| 2190-0010 | 5/1 Secondary reference Agilent Technologies, Inc. Div Agilent Technologies Headquarters |
| 900268-03 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-209-0762 is a Washer,lock, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-0762 has 1 manufacturer part number on file: 900268-03 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3130-01-352-2123. Verify interchangeability with system specifications before substitution.
Key specifications for 900268-03: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Style Designator: FLAT EXTERNAL TEETH; Material Document and Classification: FED STD 66,AISI C1050 THRU C1064 OR SAE 1050 THRU 1064 MIL STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.