The Washer,recessed, cataloged under National Stock Number 5310-00-685-7074, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-685-7074 |
| Primary Part Number | SG3726REVBLINE18 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.812 INCHES NOMINAL IN |
| Recess Depth | 0.281 INCHES NOMINAL IN |
| Material Thickness | 0.146 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.266 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 |
|---|---|
| SG3729PC23 | Circor Pumps North America Llc (USA) |
| USASB27-47-8IN | The American Society of Mechanical Engineers (USA) |
| SG3726REVBLINE18 PRIMARY | Circor Pumps North America Llc (USA) |
| SG3726PC18 | Circor Pumps North America Llc (USA) |
| S838CC | Circor Pumps North America Llc (USA) |
| SG3729REVBPC23 PRIMARY | Circor Pumps North America Llc (USA) |
| SG3727REVBPC23 PRIMARY | Circor Pumps North America Llc (USA) |
| 00833 | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| SG3725REVBLINE18 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG3729REVBPC23 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3725REVBLINE18 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3727REVBPC23 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3726PC18 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3726REVBLINE18 | 5/9 Secondary reference Siemens Energy, Inc. |
| 588-211-1720888REVBLINE18 | 3/2 Design control — primary reference U.S. Government activity |
| SG3729PC23 | 5/9 Secondary reference Siemens Energy, Inc. |
| S838CC | 5/9 Secondary reference Siemens Energy, Inc. |
| 588-300-1720889REVBLINE18 | 3/2 Design control — primary reference U.S. Government activity |
| 588-300-1720889PC18 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-685-7074 is a Washer,recessed, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-685-7074 has 9 manufacturer part numbers on file: SG3729PC23 (Circor Pumps North America Llc), USASB27-47-8IN (The American Society of Mechanical Engineers), SG3726REVBLINE18 (Circor Pumps North America Llc), SG3726PC18 (Circor Pumps North America Llc), S838CC (Circor Pumps North America Llc) and 4 more.
1 possible match (shared part number, not a government interchangeability claim): 3895-01-157-7993. Verify interchangeability with system specifications before substitution.
Key specifications for SG3726REVBLINE18: Overall Height: 0.312 INCHES NOMINAL IN; Style Designator: RECESSED; Material Document and Classification: MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.812 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.