The Washer,recessed, cataloged under National Stock Number 5310-00-272-6450, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Borgwarner Pds (anderson), L.l.c.. Government technical data includes 8 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-272-6450 |
| Primary Part Number | 1857386 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Borgwarner Pds (anderson), L.l.c. |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN |
| Recess Depth | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Material Thickness | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1010 OVERALL |
| Hole Diameter | 0.5212 INCHES MINIMUM AND 0.5412 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 |
|---|---|
| 1857386 PRIMARY | Borgwarner Pds (anderson), L.l.c. (USA) |
| 1905615 PRIMARY | Borgwarner Pds (anderson), L.l.c. (USA) |
| Reference | Meaning |
|---|---|
| A060044 | 5/9 Secondary reference Sasco Inc Canadian Div |
| A065382 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 1857386 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1905615 | 5/9 Secondary reference General Motors Corp AC-Delco Div Government Order Dept |
| 1905615 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1905615 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 1857386 | 5/9 Secondary reference General Motors Corp |
| 1905615 | 5/9 Secondary reference General Motors Corp |
NSN 5310-00-272-6450 is a Washer,recessed, manufactured by Borgwarner Pds (anderson), L.l.c., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-272-6450 has 2 manufacturer part numbers on file: 1857386 (Borgwarner Pds (anderson), L.l.c.), 1905615 (Borgwarner Pds (anderson), L.l.c.).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-620-5337. Verify interchangeability with system specifications before substitution.
Key specifications for 1857386: Overall Height: 0.208 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN. 8 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.