The Washer,concave, cataloged under National Stock Number 5310-01-022-0355, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-022-0355 |
| Primary Part Number | BACW10CA104CC |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Style Designator | CONCAVE |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Material Thickness | 0.075 INCHES NOMINAL IN |
| Specification/standard Data | 81205-BACW10CA MANUFACTURERS STANDARD |
| Surface Treatment | NICKEL OR CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL OVERALL |
| Hole Diameter | 0.358 INCHES MINIMUM AND 0.368 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 |
|---|---|
| BACW10CA104CC | Monadnock Company, the Dba Lisi Aerospace (USA) |
| BACW10CA104CC | Howmet Global Fastening Systems Inc (USA) |
| BACW10CA104CC | Boeing Defence Australia Ltd (AUS) |
| BACW10CA104CC | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACW10CA104CC | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| K29913-104 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACW10CA104CC | 5/2 Secondary reference U.S. Government activity |
| 70191-104 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| K29916-104 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACW10CA104CC | 3/2 Design control — primary reference U.S. Government activity |
| 942008-4 | 5/9 Secondary reference Monadnock Company, the Dba Lisi Aerospace |
NSN 5310-01-022-0355 is a Washer,concave, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-022-0355 has 5 manufacturer part numbers on file: BACW10CA104CC (Monadnock Company, the Dba Lisi Aerospace), BACW10CA104CC (Howmet Global Fastening Systems Inc), BACW10CA104CC (Boeing Defence Australia Ltd), BACW10CA104CC (Boeing Defence Australia Ltd Div Defense, Space & Security), BACW10CA104CC (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACW10CA104CC: Surface Finish: 32.0 MICROINCHES BOTTOM; Surface Treatment Document and Classification: AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM. 13 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.