The Washer,flat, cataloged under National Stock Number 5310-01-179-9798, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-179-9798 |
| Primary Part Number | 10T91900.0036 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES INNER |
| Surface Finish | 32.0 MICROINCHES TOP |
| Overall Diameter | 6.750 INCHES NOMINAL IN |
| Heat Treatment | HARDENED AND TEMPERED |
| Hardness Rating | 183.0 BRINELL MINIMUM AND 217.0 BRINELL MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1018 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 4.000 INCHES MINIMUM AND 4.002 INCHES MAXIMUM IN |
| Thickness | 0.995 INCHES MINIMUM AND 1.000 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 |
|---|---|
| 10T91900.0036 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 907167-1 | 5/9 Secondary reference U.S. Government activity |
| 00852681 PIECE 27 | 5/9 Secondary reference U.S. Government activity |
| 907167-1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 10T91900.0036 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-01-179-9798 is a Washer,flat, manufactured by Fairbanks Morse, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-179-9798 has 1 manufacturer part number on file: 10T91900.0036 (Fairbanks Morse, Llc).
Key specifications for 10T91900.0036: Surface Finish: 32.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES INNER; Surface Finish: 32.0 MICROINCHES TOP; Overall Diameter: 6.750 INCHES NOMINAL IN. 12 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.