The Washer,finishing, cataloged under National Stock Number 5310-01-053-2897, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Skyline Industries, Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-053-2897 |
| Primary Part Number | SI668A9G |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Skyline Industries, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | FED-STD-595 FED STD SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | FINISHING |
| Material Document and Classification | QQ-A-362,T3,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Material Thickness | 0.010 INCHES NOMINAL IN |
| Recess Diameter | 0.312 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Color | GRAY/GREY OVERALL |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.159 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN |
| Recess Angle | 100.0 DEGREES NOMINAL |
| 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 |
|---|---|
| SI668A9G PRIMARY | Skyline Industries, Inc (USA) |
| Reference | Meaning |
|---|---|
| 5310PL0743326 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| CG599A9G | 3/2 Design control — primary reference U.S. Government activity |
| C668A9G | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-053-2897 is a Washer,finishing, manufactured by Skyline Industries, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-053-2897 has 1 manufacturer part number on file: SI668A9G (Skyline Industries, Inc).
Key specifications for SI668A9G: Overall Height: 0.062 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN; Surface Treatment Document and Classification: FED-STD-595 FED STD SINGLE TREATMENT RESPONSE OVERALL; Style Designator: FINISHING; Material Document and Classification: QQ-A-362,T3,T4 FED SPEC SINGLE 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.