The Washer,flat, cataloged under National Stock Number 5310-00-516-9283, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fwd Seagrave Holdings Lp. Government technical data includes 9 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-516-9283 |
| Primary Part Number | 50B124 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fwd Seagrave Holdings Lp |
| Status | ACTIVE |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1118 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.562 INCHES NOMINAL IN |
| Thickness | 0.375 INCHES NOMINAL 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 |
|---|---|
| 50B124 PRIMARY | Fwd Seagrave Holdings Lp (USA) |
| 16W03202 PRIMARY | Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA) |
| 1552 PRIMARY | Trailmobile Inc Sub of the Pullman Co (USA) |
| 15-5-2 PRIMARY | Trailmobile Inc Sub of the Pullman Co (USA) |
| 2ES12493 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 124 | 5/9 Secondary reference Houdaille Industries Inc |
| 91225 | 5/9 Secondary reference White Motor Corp |
| 399953 | 5/9 Secondary reference White Motor Corp |
| 124 | 5/9 Secondary reference Saf-Holland, Inc. |
| 110300H | 3/2 Design control — primary reference U.S. Government activity |
| 2018579 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 2018579 | 5/9 Secondary reference General Motors Corp |
NSN 5310-00-516-9283 is a Washer,flat, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-516-9283 has 5 manufacturer part numbers on file: 50B124 (Fwd Seagrave Holdings Lp), 16W03202 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), 1552 (Trailmobile Inc Sub of the Pullman Co), 15-5-2 (Trailmobile Inc Sub of the Pullman Co), 2ES12493 (Meritor Heavy Vehicle Systems, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 3120-01-013-4043, 5180-01-398-4361, 4820-01-529-1654. Verify interchangeability with system specifications before substitution.
Key specifications for 50B124: Overall Diameter: 3.000 INCHES NOMINAL IN; Material Document and Classification: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PHOSPHATE OVERALL. 9 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.