The Washer,shouldered, cataloged under National Stock Number 5310-01-416-5477, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ems Development Corporation. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-416-5477 |
| Primary Part Number | 386D1008 ITEM 43 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ems Development Corporation |
| Status | ACTIVE |
| Shoulder Height | 0.020 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Outside Diameter | 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Hole Diameter | 0.370 INCHES MINIMUM AND 0.390 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 |
|---|---|
| 2718-50020-N380 | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| 386D1008 ITEM 43 PRIMARY | Ems Development Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2718-50020-N380 | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
NSN 5310-01-416-5477 is a Washer,shouldered, manufactured by Ems Development Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-416-5477 has 2 manufacturer part numbers on file: 2718-50020-N380 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware), 386D1008 ITEM 43 (Ems Development Corporation).
Key specifications for 386D1008 ITEM 43: Overall Height: 0.074 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Shoulder Height: 0.020 INCHES NOMINAL IN; Style Designator: SHOULDERED; Outside Diameter: 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN. 6 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.