The Washer,flat, cataloged under National Stock Number 5310-00-291-2948, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-291-2948 |
| Primary Part Number | 2403A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Overall Diameter | 2.750 INCHES NOMINAL IN |
| Material Document and Classification | C-F-206,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Minimum Tensile Strength | 100 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | WOOL COMP 9R3 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.875 INCHES NOMINAL IN |
| Thickness | 0.500 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 |
|---|---|
| 2403A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 409 | 5/9 Secondary reference Parker-Hannifin Corporation |
| 2403A | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 5310-00-291-2948 is a Washer,flat, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-291-2948 has 1 manufacturer part number on file: 2403A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 2403A: Overall Diameter: 2.750 INCHES NOMINAL IN; Material Document and Classification: C-F-206,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Minimum Tensile Strength: 100 POUNDS PER SQUARE INCH LBS. 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.