The Washer,concave, cataloged under National Stock Number 5310-00-144-3391, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Voi-Shan Products. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-144-3391 |
| Primary Part Number | SW2000-8W |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| Status | ACTIVE |
| Radius | 0.266 INCHES NOMINAL IN |
| Style Designator | CONCAVE |
| Outside Diameter | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Recess Depth | 0.049 INCHES NOMINAL IN |
| Material Thickness | 0.111 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.323 INCHES MINIMUM AND 0.343 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 |
|---|---|
| SW2000-8W | Hi-Shear Corporation (USA) |
| MM135-4 | Moeller Manufacturing & Supply, Llc (USA) |
| SW2000-8W | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| SW2000-8W PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| SW2000-8W | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| SW2000-8W | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SW2000-8W | Satair A/s (DNK) |
| ST3M683-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10116580 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| SW2000-8W | 5/9 Secondary reference U.S. Government activity |
| ST3M573W4 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 642AS0737-1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| SW2000-8W | 5/9 Secondary reference U.S. Government activity |
| SW2000-8W | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-144-3391 is a Washer,concave, manufactured by Howmet Global Fastening Systems Inc. Div Voi-Shan Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-144-3391 has 8 manufacturer part numbers on file: SW2000-8W (Hi-Shear Corporation), MM135-4 (Moeller Manufacturing & Supply, Llc), SW2000-8W (Fairchild Fasteners Europe - Vsd Gmbh), SW2000-8W (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), SW2000-8W (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for SW2000-8W: Radius: 0.266 INCHES NOMINAL IN; Style Designator: CONCAVE; Outside Diameter: 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN; Recess Depth: 0.049 INCHES NOMINAL 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.