The Washer,recessed, cataloged under National Stock Number 5310-00-403-3209, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp Div Space. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-403-3209 |
| Primary Part Number | R2835P1 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corp Div Space |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | 66 FED STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 3RD MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Material Thickness | 0.078 INCHES NOMINAL IN |
| Recess Diameter | 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL COMP 1330 OR STEEL COMP 4130 OR STEEL COMP 3130 OVERALL |
| Hole Diameter | 0.192 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| 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 |
|---|---|
| R2835P1 PRIMARY | Lockheed Martin Corp Div Space (USA) |
| Reference | Meaning |
|---|---|
| R2835P1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Aerostructures |
NSN 5310-00-403-3209 is a Washer,recessed, manufactured by Lockheed Martin Corp Div Space, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-403-3209 has 1 manufacturer part number on file: R2835P1 (Lockheed Martin Corp Div Space).
Key specifications for R2835P1: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: 66 FED STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 3RD MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL; Outside Diameter: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN. 11 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.