The Washer,flat, cataloged under National Stock Number 5310-01-661-7007, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bunting Bearings Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-661-7007 |
| Primary Part Number | BBTW012024002 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bunting Bearings Corp |
| Status | ACTIVE |
| Overall Diameter | 0.748 INCHES MINIMUM AND 0.758 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | IRON ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.377 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Thickness | 0.0525 INCHES MINIMUM AND 0.0725 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 |
|---|---|
| 3750K2 | Mcmaster-Carr Supply Co (USA) |
| BBTW012024002 PRIMARY | Bunting Bearings Corp (USA) |
| Reference | Meaning |
|---|---|
| 4735782 | 5/1 Secondary reference Med-Eng Holdings, Ulc |
NSN 5310-01-661-7007 is a Washer,flat, manufactured by Bunting Bearings Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-661-7007 has 2 manufacturer part numbers on file: 3750K2 (Mcmaster-Carr Supply Co), BBTW012024002 (Bunting Bearings Corp).
Key specifications for BBTW012024002: Overall Diameter: 0.748 INCHES MINIMUM AND 0.758 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: 2355-01-587-2316. 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.