The Washer,recessed, cataloged under National Stock Number 5310-01-172-3309, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fabrication Specialty Inc Dba Fabrication Specialty Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-172-3309 |
| Primary Part Number | 4684969-8 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fabrication Specialty Inc Dba Fabrication Specialty Inc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES TOP |
| Style Designator | RECESSED |
| Material Document and Classification | AF DE-588,FSCM 18873 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 6.880 INCHES NOMINAL IN |
| Material Thickness | 0.180 INCHES NOMINAL IN |
| Recess Diameter | 3.500 INCHES NOMINAL IN |
| Material | PLASTIC ACETAL OVERALL |
| Hole Diameter | 3.440 INCHES NOMINAL 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 |
|---|---|
| 4684969-8 | Fabrication Specialty Inc Dba Fabrication Specialty Inc (USA) |
| Reference | Meaning |
|---|---|
| 708-4684958 ITEM 8 | 5/9 Secondary reference U.S. Government activity |
| 87841-0205 ITEM 8 | 3/9 Design control — primary reference U.S. Government activity |
| 4684958 ITEM 8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-172-3309 is a Washer,recessed, manufactured by Fabrication Specialty Inc Dba Fabrication Specialty Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-172-3309 has 1 manufacturer part number on file: 4684969-8 (Fabrication Specialty Inc Dba Fabrication Specialty Inc).
Key specifications for 4684969-8: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES TOP; Style Designator: RECESSED; Material Document and Classification: AF DE-588,FSCM 18873 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 10 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.