The Washer,recessed, cataloged under National Stock Number 5310-00-823-3871, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Anillo Industries Llc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-823-3871 |
| Primary Part Number | BACW10BN6C |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD 1ST TREATMENT RESPONSE AND AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Specification/standard Data | 81205-BACW10BN MANUFACTURERS STANDARD |
| Recess Diameter | 0.489 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Material | STEEL COMP 4130 OR STEEL COMP 8630 OVERALL |
| Hole Diameter | 0.376 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| 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 |
|---|---|
| BACW10BN6C | Anillo Industries Llc (USA) |
| BACW10BN6C | Moeller Manufacturing & Supply, Llc (USA) |
| BACW10BN6C | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACW10BN6C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-823-3871 is a Washer,recessed, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-823-3871 has 3 manufacturer part numbers on file: BACW10BN6C (Anillo Industries Llc), BACW10BN6C (Moeller Manufacturing & Supply, Llc), BACW10BN6C (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACW10BN6C: Surface Treatment Document and Classification: AMS 2416 ASSN STD 1ST TREATMENT RESPONSE AND AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Style Designator: RECESSED; Material Document and Classification: MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OVERALL. 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.