The Washer,flat, cataloged under National Stock Number 5310-01-494-8569, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hoffman Engineering, Llc Dba Hoffman Engineering Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-494-8569 |
| Primary Part Number | 563-5611 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hoffman Engineering, Llc Dba Hoffman Engineering Llc |
| Status | ACTIVE |
| Overall Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM D1056,TY 2,CL C,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | RUBBER SYNTHETIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Thickness | 0.048 INCHES MINIMUM AND 0.078 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 |
|---|---|
| 563-5611 | Hoffman Engineering, Llc Dba Hoffman Engineering Llc (USA) |
| 01-1242 | Paramount Panels (uk) Div Paramount Panels Uk (GBR) |
| Reference | Meaning |
|---|---|
| L56-11 | 5/1 Secondary reference Hoffman Engineering, Llc Dba Hoffman Engineering Llc |
| A3154526 | 7/2 Vendor item drawing reference U.S. Government activity |
| A3154526-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-494-8569 is a Washer,flat, manufactured by Hoffman Engineering, Llc Dba Hoffman Engineering Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-494-8569 has 2 manufacturer part numbers on file: 563-5611 (Hoffman Engineering, Llc Dba Hoffman Engineering Llc), 01-1242 (Paramount Panels (uk) Div Paramount Panels Uk).
Key specifications for 563-5611: Overall Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Material Document and Classification: ASTM D1056,TY 2,CL C,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Special Features: MATERIAL;NEOPRENE SPONGE,CLOSED CELL. 8 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.