The Washer,flat, cataloged under National Stock Number 5310-01-131-5495, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Vertex Modernization and Sustainment Llc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-131-5495 |
| Primary Part Number | 3929AS1191-2 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Vertex Modernization and Sustainment Llc |
| Status | ACTIVE |
| Overall Diameter | 1.208 INCHES MINIMUM AND 1.228 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059,COND ANNEALED MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR MIL-T-8506 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.756 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN |
| Thickness | 0.032 INCHES NOMINAL 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 |
|---|---|
| 3929AS1191-2 PRIMARY | Vertex Modernization and Sustainment Llc (USA) |
| Reference | Meaning |
|---|---|
| 10109604 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3929AS1191-2 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 4M36 REV AJ | 5/9 Secondary reference The Boeing Company Div Defense |
| 4M36-06026 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-131-5495 is a Washer,flat, manufactured by Vertex Modernization and Sustainment Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-131-5495 has 1 manufacturer part number on file: 3929AS1191-2 (Vertex Modernization and Sustainment Llc).
Key specifications for 3929AS1191-2: Overall Diameter: 1.208 INCHES MINIMUM AND 1.228 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059,COND ANNEALED MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR MIL-T-8506 MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE 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.