The Washer,flat, cataloged under National Stock Number 5310-01-076-4963, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Basic Rubber and Plastics Co.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-076-4963 |
| Primary Part Number | 4687561-005 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Basic Rubber and Plastics Co. |
| Status | ACTIVE |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.660 INCHES NOMINAL IN |
| Thickness | 0.090 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 |
|---|---|
| 4687561-005 | Basic Rubber and Plastics Co. (USA) |
| 845-4687561 ITEM 005 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 1516-004-CJ01PC | C/1 Advisory reference — outside the item-of-supply concept Aluf Industries Inc |
| 56-10-3210 | 3/2 Design control — primary reference U.S. Government activity |
| 845-4687561 ITEM 005 | 7/2 Vendor item drawing reference U.S. Government activity |
| 56-10-3210 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-076-4963 is a Washer,flat, manufactured by Basic Rubber and Plastics Co., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-076-4963 has 2 manufacturer part numbers on file: 4687561-005 (Basic Rubber and Plastics Co.), 845-4687561 ITEM 005 (Naval Sea Systems Command).
Key specifications for 4687561-005: Overall Diameter: 1.250 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL. 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.