The Washer,flat, cataloged under National Stock Number 5310-01-434-5894, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-434-5894 |
| Primary Part Number | BACW10BN101P |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.195 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-18728 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 81205-BACW10BN MANUFACTURERS STANDARD |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 8630 OR STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.641 INCHES MINIMUM AND 0.652 INCHES MAXIMUM IN |
| Thickness | 0.073 INCHES MINIMUM AND 0.087 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 |
|---|---|
| BACW10BN101P | Anillo Industries Llc (USA) |
| BACW10BN101P | Moeller Manufacturing & Supply, Llc (USA) |
| Reference | Meaning |
|---|---|
| BACW10BN101P | 3/2 Design control — primary reference U.S. Government activity |
| BACW10BN101P | 5/9 Secondary reference Mamco Mfg Co Inc |
NSN 5310-01-434-5894 is a Washer,flat, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-434-5894 has 2 manufacturer part numbers on file: BACW10BN101P (Anillo Industries Llc), BACW10BN101P (Moeller Manufacturing & Supply, Llc).
Key specifications for BACW10BN101P: Surface Treatment Document and Classification: AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.195 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Material Document and Classification: MIL-S-18728 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 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.