The Washer,flat, cataloged under National Stock Number 5310-01-466-2744, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-466-2744 |
| Primary Part Number | 90107A033 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.5312 INCHES NOMINAL IN |
| Thickness | 0.062 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 |
|---|---|
| 90107A033 | Mcmaster-Carr Supply Company (USA) |
| 90107A033 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| M1170-052179 | 6/9 Informative reference only Forsvarets Materielverk |
| 90107A033 | 3/9 Design control — primary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 90107A033 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 90107A033 | 5/9 Secondary reference Ojibway Inc |
| 90107A033 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-466-2744 is a Washer,flat, manufactured by Mcmaster-Carr Supply Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-466-2744 has 2 manufacturer part numbers on file: 90107A033 (Mcmaster-Carr Supply Company), 90107A033 (Mcmaster-Carr Supply Co).
Key specifications for 90107A033: Overall Diameter: 1.250 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: SOT EQUIPMENT (SE),B-2 BOMBER. 7 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.