The Washer,lock, cataloged under National Stock Number 5310-01-561-6513, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Dba Barnes Distribution. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-561-6513 |
| Primary Part Number | 99727 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Special Test Features | MATERIAL = HARDENED CARBON STEEL |
| Supplementary Features | NOMINAL SIZE = 3/4" NON-LINKING. |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 99727 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5310-01-561-6513 is a Washer,lock, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-561-6513 has 1 manufacturer part number on file: 99727 (Barnes Group Inc. Dba Barnes Distribution).
Key specifications for 99727: Special Test Features: MATERIAL = HARDENED CARBON STEEL; Supplementary Features: NOMINAL SIZE = 3/4" NON-LINKING.; Special Features: 3/4 GRADE 8-BLACK LOCK WASHERS, WASHER, LOCK, NON-LINKING, 3/4", HARDENED CARBON STEEL, MEETS ANSI/ASME B18.21.1 SPECS.FOR USE WITH GR 8 FASTENERS. THROUGH NON-PLATED.; Part Name Assigned by Controlling Agency: WASHER,LOCK. 3 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.