The Washer,finishing, cataloged under National Stock Number 5310-01-031-1041, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-031-1041 |
| Primary Part Number | BACW10U-C10P |
| 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 | MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 6TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 7TH MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.573 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN |
| Material Thickness | 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN |
| Specification/standard Data | 82918-BACW10U MANUFACTURERS STANDARD |
| Recess Diameter | 0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| Hole Diameter | 0.200 INCHES MINIMUM AND 0.252 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-C10P | Anillo Industries Llc (USA) |
| BACW10U-C10P | The Boeing Company Div Commercial (USA) |
| BACW10U-C10P | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BACW10U-C10P | 3/2 Design control — primary reference U.S. Government activity |
| BACW10U-C10P | 5/9 Secondary reference U.S. Government activity |
| BACW10U | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-031-1041 is a Washer,finishing, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-031-1041 has 3 manufacturer part numbers on file: BACW10U-C10P (Anillo Industries Llc), BACW10U-C10P (The Boeing Company Div Commercial), BACW10U-C10P (Boeing Distribution Services X, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-669-7074. Verify interchangeability with system specifications before substitution.
Key specifications for BACW10U-C10P: Overall Height: 0.080 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: MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 6TH MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 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.