The Washer,flat, cataloged under National Stock Number 5310-00-009-5661, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Anillo Industries Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-009-5661 |
| Primary Part Number | S1026614-4-003 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.3760 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-T-6736,COND N MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6372 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OR STEEL COMP 4135 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.2500 INCHES NOMINAL IN |
| Thickness | 0.084 INCHES MINIMUM AND 0.094 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 |
|---|---|
| S1026614-4-003 PRIMARY | Anillo Industries Llc (USA) |
| S1026614-4-003 PRIMARY | Avalon Machine Products Inc (USA) |
| LD137-0026-2003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| S1026614-4-003 PRIMARY | All Power Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| S1026614-4-003 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-009-5661 is a Washer,flat, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-009-5661 has 4 manufacturer part numbers on file: S1026614-4-003 (Anillo Industries Llc), S1026614-4-003 (Avalon Machine Products Inc), LD137-0026-2003 (The Boeing Company Div Legacy Am&m), S1026614-4-003 (All Power Manufacturing Co.).
Key specifications for S1026614-4-003: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.3760 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN; Material Document and Classification: MIL-T-6736,COND N MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6372 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.