The Washer,finishing, cataloged under National Stock Number 5310-01-485-0770, 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 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-485-0770 |
| Primary Part Number | HS5321C3 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| Style Designator | FINISHING |
| Material Document and Classification | MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Material Thickness | 0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN |
| Recess Diameter | 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.190 INCHES MINIMUM AND 0.228 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 |
|---|---|
| HS5321C3 PRIMARY | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| HS5321C3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| HS5321C3 | 7/2 Vendor item drawing reference The Boeing Company |
NSN 5310-01-485-0770 is a Washer,finishing, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-485-0770 has 1 manufacturer part number on file: HS5321C3 (Anillo Industries Llc).
Key specifications for HS5321C3: Style Designator: FINISHING; Material Document and Classification: MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Material Thickness: 0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN; Recess Diameter: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN. 7 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.