The Washer,finishing, cataloged under National Stock Number 5310-01-050-4258, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-050-4258 |
| Primary Part Number | BACW10U-B416 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | FINISHING |
| Material Document and Classification | QQ-S-698,COND 1/2 H OR HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 5TH MATERIAL RESPONSE OR MIL-S-7952 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-7952 MIL SPEC 6TH MATERIAL RESPONSE OR SAE ASSN STD 7TH MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.763 INCHES MINIMUM AND 0.793 INCHES MAXIMUM IN |
| Material Thickness | 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN |
| Specification/standard Data | 81205-BACW10U MANUFACTURERS STANDARD |
| Recess Diameter | 0.507 INCHES MINIMUM AND 0.527 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OR STEEL COMP 1010 OVERALL |
| Hole Diameter | 0.261 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Recess Angle | 99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| BACW10U-B416 | Anillo Industries Llc (USA) |
| BACW10U-B416 | Moeller Manufacturing & Supply, Llc (USA) |
| Reference | Meaning |
|---|---|
| BACW10U-B416 | 5/9 Secondary reference Reliable Industries Inc Dba Reliable Fastener Products |
| BACW10U-B416 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-050-4258 is a Washer,finishing, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-050-4258 has 2 manufacturer part numbers on file: BACW10U-B416 (Anillo Industries Llc), BACW10U-B416 (Moeller Manufacturing & Supply, Llc).
Key specifications for BACW10U-B416: Overall Height: 0.105 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: FINISHING; Material Document and Classification: QQ-S-698,COND 1/2 H OR HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698,COND 1/2 H OR HARD FED SPEC 5TH MATERIAL RESPONSE OR MIL-S-7952 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-7952 MIL SPEC 6TH MATERIAL RESPONSE OR SAE ASSN STD 7TH MATERIAL RESPONSE OVERALL. 11 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.