The Washer,flat, cataloged under National Stock Number 5310-01-419-2401, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-419-2401 |
| Primary Part Number | S2431218-7C15F |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.932 INCHES MINIMUM AND 0.957 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE OR AMS 5512 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 347 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN |
| Thickness | 0.022 INCHES MINIMUM AND 0.042 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 |
|---|---|
| S2431218-7C15F PRIMARY | Anillo Industries Llc (USA) |
| S2431218-7C15F PRIMARY | Moeller Manufacturing & Supply, Llc (USA) |
| Reference | Meaning |
|---|---|
| S2431218-7C15F | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-419-2401 is a Washer,flat, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-419-2401 has 2 manufacturer part numbers on file: S2431218-7C15F (Anillo Industries Llc), S2431218-7C15F (Moeller Manufacturing & Supply, Llc).
Key specifications for S2431218-7C15F: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.932 INCHES MINIMUM AND 0.957 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE OR AMS 5512 ASSN STD 4TH 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.