The Washer,recessed, cataloged under National Stock Number 5310-00-655-9305, 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 4 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-655-9305 |
| Primary Part Number | SG3512REVBPC42 |
| 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 | 1.562 INCHES NOMINAL IN |
| Recess Depth | 0.156 INCHES NOMINAL IN |
| Material Thickness | 0.1275 INCHES MINIMUM AND 0.1300 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.000 INCHES MINIMUM AND 1.005 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 |
|---|---|
| SG3512REVBPC42 PRIMARY | Circor Pumps North America Llc (USA) |
| S838BD PRIMARY | Circor Pumps North America Llc (USA) |
| SG3513REVBPC42 PRIMARY | Circor Pumps North America Llc (USA) |
| SG3868PC33 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG3512REVBPC42 | 5/9 Secondary reference Siemens Energy, Inc. |
| S838BD | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3868PC33 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3513REVBPC42 | 5/9 Secondary reference Siemens Energy, Inc. |
| 3323811REVBPC42 | 3/2 Design control — primary reference U.S. Government activity |
| 3323812REVBPC42 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-655-9305 is a Washer,recessed, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-655-9305 has 4 manufacturer part numbers on file: SG3512REVBPC42 (Circor Pumps North America Llc), S838BD (Circor Pumps North America Llc), SG3513REVBPC42 (Circor Pumps North America Llc), SG3868PC33 (Circor Pumps North America Llc).
Key specifications for SG3512REVBPC42: Overall Height: 0.250 INCHES NOMINAL IN; Style Designator: RECESSED; Material Document and Classification: MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.562 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.